CN109041590B

CN109041590B - Manual focusing prompting method, control device, shooting equipment and controller

Info

Publication number: CN109041590B
Application number: CN201780016947.3A
Authority: CN
Inventors: 王晓丹
Original assignee: SZ DJI Technology Co Ltd
Current assignee: SZ DJI Technology Co Ltd
Priority date: 2017-12-11
Filing date: 2017-12-11
Publication date: 2021-02-19
Anticipated expiration: 2037-12-11
Also published as: CN109041590A; WO2019113746A1

Abstract

A manual focusing prompting method, a control device, a shooting device and a shooting system are provided, the method comprises the following steps: calculating a focusing parameter peak value of a focusing object in a current image when focusing; calculating a current focusing value corresponding to the current adjusting position of the focusing adjusting assembly; and performing focusing prompt according to the focusing parameter peak value and the current focusing value, and prompting a user to operate the focusing adjusting component so as to enable the focusing parameter peak value to be consistent with the current focusing value. The focusing parameter peak value of the focusing object in the current image during focusing is calculated, the current focusing value corresponding to the current adjusting position of the focusing adjusting assembly is calculated, focusing prompt is carried out according to the focusing parameter peak value and the current focusing value, and a user is prompted to operate the focusing adjusting assembly so that the focusing parameter peak value is consistent with the current focusing value, therefore, the shooting equipment can be quickly and accurately focused on the target object, and the user can quickly and accurately find the focusing position of the focusing object during focusing.

Description

Manual focusing prompting method, control device, shooting equipment and controller

Technical Field

The embodiment of the invention relates to the field of cameras, in particular to a manual focusing prompting method, a manual focusing prompting control device, shooting equipment and a manual focusing controller.

Background

The manual focusing is a focusing mode that the focusing is clear by rotating a lens focusing ring or stepping by pressing a direction key of a camera body, and the manual focusing is still an indispensable function in a digital camera.

When a user carries out manual focusing on a camera, the user needs to slowly rotate a focusing ring of the camera, whether a focusing object on a screen is clear is observed through human eyes in the process of rotating the focusing ring, the focusing ring is stopped rotating when the user observes that the focusing object on the screen is sufficiently clear, and in the process of manual focusing, the user needs to continuously rotate the focusing ring to find a better focusing position and cannot quickly and accurately find the focusing position when the focusing object is focused.

Disclosure of Invention

The embodiment of the invention provides a prompting method, a control device, shooting equipment and a controller for manual focusing, so that a user can quickly and accurately find a focusing position of a focusing object during focusing.

A first aspect of an embodiment of the present invention provides a manual focusing prompting method, including:

calculating a focusing parameter peak value of a focusing object in a current image when focusing;

calculating a current focusing value corresponding to the current adjusting position of the focusing adjusting assembly;

and performing focusing prompt according to the focusing parameter peak value and the current focusing value, and prompting a user to operate the focusing adjusting component so as to enable the focusing parameter peak value to be consistent with the current focusing value.

A second aspect of an embodiment of the present invention provides a control apparatus, including: a memory and a processor;

the memory is used for storing program codes;

the processor, invoking the program code, when executed, is configured to:

A third aspect of embodiments of the present invention is to provide a photographing apparatus including:

a body;

the optical assembly is arranged on the machine body and is used for collecting image information;

the focusing adjusting component is connected with the optical component and used for adjusting the focal length of the optical component; and the control device of the second aspect.

A fourth aspect of embodiments of the present invention provides a shooting system, including:

a body;

the antenna is arranged on the body and is used for communicating with shooting equipment;

the focusing adjustment assembly is arranged on the body and used for adjusting the focal length of an optical assembly of the shooting device; and the control device of the second aspect.

According to the manual focusing prompting method, the control device, the shooting device and the controller provided by the embodiment, the user is prompted to operate the focusing adjusting component by calculating the focusing parameter peak value of the focusing object in the current image when the focusing object is focused and the current focusing value corresponding to the current adjusting position of the focusing adjusting component according to the focusing parameter peak value and the current focusing value, so that the focusing parameter peak value is consistent with the current focusing value, the shooting device can be quickly and accurately focused on the target object, and the user can quickly and accurately find the focusing position of the focusing object when the focusing object is focused during manual focusing.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive labor.

Fig. 1 is a schematic structural diagram of a shooting device provided in an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a shooting device and a remote controller according to an embodiment of the present invention;

FIG. 3 is a flowchart of a prompting method for manual focusing according to an embodiment of the present invention;

FIG. 4 is a schematic diagram of a display module according to an embodiment of the present invention;

FIG. 5 is a flowchart illustrating a manual focusing prompting method according to another embodiment of the present invention;

FIG. 6 is a schematic diagram of a focusing prompt according to an embodiment of the present invention;

FIG. 7 is a diagram illustrating a focus indication according to an embodiment of the present invention;

FIG. 8 is a schematic diagram of a focusing prompt according to an embodiment of the present invention;

FIG. 9 is a diagram illustrating a focus indication according to an embodiment of the present invention;

FIG. 10 is a diagram illustrating a focus indication according to an embodiment of the present invention;

FIG. 11 is a diagram illustrating a focus indication according to an embodiment of the present invention;

FIG. 12 is a schematic view of a focusing prompt according to an embodiment of the present invention;

FIG. 13 is a schematic diagram of a focusing prompt according to an embodiment of the present invention;

FIG. 14 is a schematic diagram of a focusing prompt according to an embodiment of the present invention;

FIG. 15 is a schematic diagram of a focusing prompt according to an embodiment of the present invention;

FIG. 16 is a diagram illustrating a focus indication according to an embodiment of the present invention;

FIG. 17 is a diagram illustrating a focus indication according to an embodiment of the present invention;

FIG. 18 is a schematic view of a focusing prompt according to an embodiment of the present invention;

FIG. 19 is a diagram illustrating a focus indication according to an embodiment of the present invention;

FIG. 20 is a diagram illustrating a focus indication according to an embodiment of the present invention;

FIG. 21 is a diagram illustrating a focus indication according to an embodiment of the present invention;

FIG. 22 is a diagram illustrating a focus indication according to an embodiment of the present invention;

FIG. 23 is a schematic view of a focusing prompt according to an embodiment of the present invention;

FIG. 24 is a schematic view of a focusing prompt according to an embodiment of the present invention;

FIG. 25 is a diagram illustrating a focus indication according to an embodiment of the present invention;

FIG. 26 is a flowchart illustrating a method for prompting manual focusing according to another embodiment of the present invention;

FIG. 27 is a diagram illustrating a focus indication according to an embodiment of the present invention;

FIG. 28 is a flowchart illustrating a method for prompting manual focus according to another embodiment of the present invention;

FIG. 29 is a flowchart illustrating a method for prompting manual focus according to another embodiment of the present invention;

fig. 30 is a structural diagram of a control device according to an embodiment of the present invention.

Reference numerals:

100-shooting device 102-optical assembly 104-body

106-focus adjustment assembly 108-control device 1082-memory

1084-processor 105-display assembly 101-communication interface

110-remote controller 113-display assembly 114-focus adjustment assembly

112-antenna 111-communication interface 116-control device

1162-memory 1164-processor 400-display assembly

402-field of view 404-focal region 406-in-focus object

408-Focus area 410-Focus area 600-display Assembly

601-first indicator 602-second indicator 603-preset area

800-Focus prompt icon 802-Scale image 804-first indicator

806-second indicator 1100-focus cue icon 1102-scale image

1104-first indicator 1106-second indicator 1400-Focus prompt icon

1402-first border 1404-second border 1700-Focus prompt icon

1702-first ring 1704-second ring 2000-focus cue icon

2002-line segment 2004-semicircle 2006-diameter

2008-target indication Ring 2300-Focus prompt icon 2302-first line segment

2304-second line segment 2306-target indicating ring 300-control device

301-memory 302-processor 1-location

2-position 3-position 4-position

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Some embodiments of the invention are described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.

Fig. 1 is a schematic structural diagram of a shooting device according to an embodiment of the present invention. As shown in fig. 1, the photographing apparatus 100 may be a camera, a video camera, or other apparatuses having a photographing function such as a smart terminal or the like. The shooting function is a function of shooting a still image and/or a moving image. Specifically, the photographing apparatus 100 may be a manually controlled photographing apparatus, or may be an automatic photographing apparatus, and the automatic photographing apparatus may have a manual focus mode and an automatic focus mode. In the auto-focus mode, the photographing apparatus may automatically adjust its optical components such as the lens, for example, an auto-focus motor may control the lens to rotate to adjust the focal length of the lens. The manual focus mode is an important complement to the auto focus mode, for example, when the ambient lighting is too dark, the auto focus motor cannot precisely control the lens rotation, and manual focus is required. However, in the prior art, when a user manually focuses a camera, the user needs to slowly rotate a focusing ring of the camera, and in the process of rotating the focusing ring, whether a focusing object on a screen is clear is observed through human eyes, and when the user observes that the focusing object on the screen is sufficiently clear, the user stops rotating the focusing ring, and in the process of manually focusing, the user needs to continuously rotate the focusing ring to find a better focusing position, and cannot quickly and accurately find the focusing position when the focusing object is focused. To address this problem, the present embodiment provides a manual focusing prompting method, for example, to prompt a user whether a current image is in a focused state, and if the current image is not in focus, prompt the user how to adjust a focusing adjustment component of a shooting device, so as to focus the current image.

The photographing apparatus 100 may be a handheld photographing apparatus, or may be a photographing apparatus mounted on a movable platform such as an unmanned aerial vehicle. If the photographing apparatus 100 is mounted on a movable platform such as a drone, the photographing apparatus 100 is controlled by a remote controller. As shown in fig. 2, the photographing apparatus 100 is mounted on a drone, and the remote controller 110 may control the photographing apparatus 100. The remote controller 110 may be a dedicated controller corresponding to the unmanned aerial vehicle, or may be other terminal devices installed with a control program, such as a smart phone, a tablet computer, and the like. The remote controller 110 and the photographing apparatus 100 may perform wired communication or wireless communication. As shown in fig. 2, the photographing apparatus 100 includes a communication interface 101, the remote controller 110 includes a communication interface 111, and the communication interface 101 and the communication interface 111 can communicate with each other, for example, the remote controller 110 can transmit a control instruction to the photographing apparatus 100 through the communication interface 111, and the photographing apparatus 100 can transmit image data photographed by the photographing apparatus 100 to the remote controller 110 through the communication interface 101. In some embodiments, the remote controller 110 may communicate with the photographing apparatus 100 wirelessly, and optionally, the communication interface 101 and the communication interface 111 are wireless communication interfaces. As shown in fig. 2, remote controller 110 further includes an antenna 112, antenna 112 coupled to communication interface 111, antenna 112 configured to receive and/or transmit wireless signals. Accordingly, the photographing apparatus 100 may also include an antenna for receiving and/or transmitting wireless signals.

As shown in fig. 1 and 2, the photographing apparatus 100 includes an optical assembly 102 and a body 104, and the optical assembly 102 may include a lens, and the lens may be separately mounted on the body 104 or may be integrated on the body 104. The photographing apparatus 100 may acquire image data through the optical assembly 102. In addition, the photographing apparatus 100 further includes a display component 105, and the display component 105 can be used to display one or more indication information described in the following embodiments. The display component 105 may include a viewfinder or a screen, which may be a touch screen.

In some embodiments, as shown in fig. 1, the capture device 100 further includes a focus adjustment assembly 106, the focus adjustment assembly 106 being coupled with the optical assembly 102, the focus adjustment assembly 106 being operable to adjust the focus of the optical assembly 102. In some embodiments, the focus adjustment assembly 106 may include a mechanical adjustment device such as a focus ring that surrounds the optical assembly 102. When the user rotates the focus ring, the focus of the optical assembly 102 will change as the focus ring is rotated. In still other embodiments, the focus adjustment assembly 106 may further include one or more adjustment buttons or wheels, which may be disposed on the optical assembly 102 or the body 104, and when used to press the adjustment buttons or rotate the adjustment wheels, the photographing apparatus 100 will generate an electrical signal indicating how to adjust the focus of the optical assembly 102, such as how to adjust the rotational direction and/or rotational distance of one or more optical elements in the optical assembly 102. The electrical signal may instruct a motor mounted on the optical assembly 102 or the body 104 to rotate to drive the optical assembly 102 to focus. The adjustment buttons or wheels may be mechanical adjustment buttons or wheels or may be virtual adjustment buttons or wheels displayed on the display assembly 105.

As shown in fig. 2, the remote controller 110 further includes a display module 113, and the display module 113 may display image data captured by the capturing apparatus 100, and may also display one or more indication information described in the following embodiments. The display component 113 may include a viewfinder or a screen, which may be a touch screen. In addition, as shown in fig. 2, the remote controller 110 further includes a focus adjustment assembly 114, and the focus adjustment assembly 114 can be used to adjust the focus of the optical assembly 102. The focus adjustment assembly 114 may trigger the remote controller 110 to send an adjustment signal to the capture device 100, which may instruct a motor mounted on the optical assembly 102 or the body 104 to rotate to drive the optical assembly 102 to focus. Similarly to the focus adjustment assembly 106, the focus adjustment assembly 114 may further include one or more mechanical adjustment buttons or adjustment wheels, or one or more virtual adjustment buttons or adjustment wheels displayed on the display assembly 113.

In some embodiments, as shown in fig. 1, the photographing apparatus 100 may further include a control device 108, and the control device 108 may be provided on the body 104, or the control device 108 may be a part of the body 104. In some embodiments, the control device 108 may be separate from the fuselage 104 or may be coupled to the fuselage 104. The control device 108 may execute the manual focusing prompting method described in the subsequent embodiments. As shown in fig. 1, the control device 108 includes a memory 1082 and a processor 1084, the memory 1082 is used for storing program codes, the processor 1084 can call the program codes, and when the program codes are executed, the processor 1084 is used for executing the manual focusing prompting method described in the following embodiments.

As shown in fig. 2, the remote controller 110 may further include a control device 116, the control device 116 includes a memory 1162 and a processor 1164, the memory 1162 is used for storing program codes, the processor 1164 may call the program codes, and when the program codes are executed, the processor 1164 is used for executing the prompting method of manual focusing according to the following embodiment.

Optionally, memory 1082 and/or memory 1162 include non-random computer-readable storage media such as Random Access Memory (RAM), read-only memory, flash memory, hard disk memory, or optical media. Processor 1084 and/or processor 1164 include any suitable hardware processor, such as a microprocessor, microcontroller, a Central Processing Unit (CPU), Graphics Processing Unit (GPU), Network Processor (NP), Digital Signal Processor (DSP), Application Specific Integrated Circuit (ASIC), Field Programmable Gate Array (FPGA), or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or the like.

The following describes the manual focusing prompting method in detail with reference to specific embodiments.

The embodiment of the invention provides a manual focusing prompting method. Fig. 3 is a flowchart of a prompting method for manual focusing according to an embodiment of the present invention. As shown in fig. 3, the method in this embodiment may include:

step S301, calculating a focusing parameter peak value of a focusing object in the current image when focusing.

The execution subject of the method of the present embodiment may be the control device 108 of the photographing apparatus 100 or the control device 116 of the remote controller 110. By the control means 108 performing the method, the photographing apparatus 100 may prompt the user whether the current image is in focus, and if the current image is not in focus, prompt the user how to adjust the focus adjustment assembly 106 of the photographing apparatus 100 to focus the current image. Alternatively, the remote controller 110 may prompt the user whether the current image captured by the capturing device 100 is in focus or not by the control device 116 executing the method, and if the current image is not in focus, prompt the user how to adjust the focus adjustment component 114 on the remote controller 110 to focus the current image.

Specifically, the shooting device 100 obtains image data through the optical assembly 102, and the control device 108 calculates a focusing parameter peak value of a focusing object in a current image when the focusing object is focused; alternatively, after the photographing apparatus 100 acquires the image data through the optical component 102, the image data is transmitted to the remote controller 110, and the control device 116 of the remote controller 110 calculates the focusing parameter peak value when the focusing object is in focus in the current image.

Specifically, the calculating a focusing parameter peak value of a focusing object in a current image when focusing includes: carrying out image analysis on the current image to obtain a focusing evaluation function; and calculating the focusing parameter peak value of the focusing object in the current image when focusing according to the focusing evaluation function.

For example, the control device 108 or the control device 116 analyzes the current image to obtain a focusing evaluation function, and further calculates a focusing parameter peak value of the focusing object in the current image when focusing according to the focusing evaluation function.

The ideal focus evaluation function should have a single peak, e.g. only one extreme, an unbiased property, e.g. a maximum only at best focus, a polarity reflecting defocus, e.g. before or after focus, and at the same time should have a good immunity to interference. In this embodiment, the control device 108 or the control device 116 may determine the focus evaluation function based on frequency domain analysis, information theory, or difference operation, and specifically, the image analysis of the current image to obtain the focus evaluation function includes the following possible implementation manners:

one possible implementation is: and carrying out image analysis on the current image in a frequency domain to obtain a focusing evaluation function.

In the frequency domain analysis of the image, the degree of the clearness and the focusing of the image is determined by the number of high-frequency components of the image, and the image is clear when the high-frequency components are more; the image is blurred when the high frequency component is small. Therefore, the amount of high-frequency components of the image can be used as the judgment basis of the image definition. Since the main characteristic of the high-definition image is that the high-definition image has clear edges and rich image details, and the edges and the details correspond to high-frequency components on an image frequency domain; the blur of the out-of-focus image appears as attenuation of high frequency components in the frequency domain.

The most common method for performing frequency domain analysis on an image is fourier transform, specifically, a gray level image of spatial position distribution is changed into a representation of corresponding spatial frequency distribution through fourier transform, and then the size of a high-frequency component in the spatial frequency distribution is used as a judgment basis for judging whether a current image is clear, so that a function capable of evaluating the definition of the current image can be used as a focusing evaluation function.

In other embodiments, the performing image analysis on the current image in the frequency domain includes: and performing image analysis on the current image based on discrete wavelet transform.

To solve this problem, a discrete wavelet transform may be used in addition to the fourier transform to perform frequency domain analysis on the current image, since the fourier transform provides information about the frequency domain, but localized information about time is substantially lost.

Discrete Wavelet Transform (DWT) obtains the frequency characteristics of a signal by scaling the width of a mother Wavelet, and obtains time information of the signal by shifting the mother Wavelet. The original input signal passes through two complementary filter banks, wherein one filter is a low-pass filter, the original input signal can obtain an approximate value A of the signal after passing through the low-pass filter, and the other filter is a high-pass filter, and the original input signal can obtain a detail value D of the signal after passing through the high-pass filter. In wavelet analysis, the approximation value a is a coefficient calculated by a large scale factor representing the low frequency component of the signal, and the detail value D is a coefficient calculated by a small scale factor representing the high frequency component of the signal.

For a static two-dimensional digital image, it may be first subjected to several two-dimensional DWT transforms to decompose the image information into high frequency components H, V and D and a low frequency component a. C_h、C_v、C_dRespectively representing a horizontal high-frequency coefficient matrix, a vertical high-frequency coefficient matrix and a diagonal high-frequency coefficient matrix. The amplitude of the low-frequency coefficient of the two-dimensional digital image is weakened, the amplitude of the high-frequency coefficient of the two-dimensional digital image is strengthened, and the absolute values of the high-frequency part are summed to obtain the following formula (1):

the larger the value E is, the richer the high frequency component of the two-dimensional digital image is, that is, the more obvious the edge change is, and thus, the higher the definition of the two-dimensional digital image is. Alternatively, equation (1) may be used as the focus evaluation function.

In some embodiments, the image analyzing the current image in the frequency domain comprises: and performing image analysis on the current image based on discrete cosine transform.

Because the Fourier transform processes the complex number, the calculation degree is complex, and the time required by calculation is long. The discrete cosine transform can gather more energy, has better separation capability on high-frequency components, and separates and reserves the high-frequency components as the evaluation scale of the image definition in the definition evaluation function.

For example, F (x, y) represents a digital image matrix of size M × N, the discrete cosine transform of F (x, y) is represented as F (u, v), and F (u, v) is represented as the following formula (2):

wherein,

from the discrete cosine transform F (u, v) of F (x, y), the focus evaluation function can be expressed as the following formula (3):

wherein, (u + v)>min(M,N)，

Can be regarded as the high frequency component of the image, | F (1,1) | can be regarded as the imageThe dc component of (a).

Because the difference between the brightness and the gray level of the focused image and the gray level of the defocused image is large, and in addition, the definition of the image is also related to the brightness and the gray level of the image, relatively high frequency components are introduced to judge the definition of the image. The relatively high frequency component of an image is the ratio of the high frequency component of the image to the direct current component, which to some extent reflects the overall brightness and overall information of the image. When the value of E1 is maximum, the image is clearest.

Another possible implementation is: and carrying out image analysis on the current image to obtain the information entropy of the current image, and taking the information entropy as a focusing evaluation function.

The gray values of the in-focus image are more diversified than those of the out-of-focus image, while the gray values of the out-of-focus image tend to be single gray, resulting in the information entropy of the in-focus image and the information entropy of the out-of-focus image being different. Therefore, the information entropy of the current image can be used as the focus evaluation function. According to the shannon information theory, the larger the entropy is, the larger the information amount is, and for a two-dimensional image, the larger the entropy is, the clearer the image is.

For example, for a scene to be photographed, the photographing apparatus may photograph K images, where K is a positive integer, and calculate a grayscale histogram of each of the K images. Wherein, the probability of taking the gray value g in the K images of the kth image is recorded as P_k(g) Then, the grayscale entropy function of the kth image can be expressed as the following formula (4):

wherein G represents the maximum gray value, and K is more than or equal to 1 and less than or equal to K.

According to the formula (4), each image in the K images corresponds to a gray entropy, and according to the gray entropy of each image in the K images, a target image with the maximum gray entropy in the K images can be determined, that is, a target image δ with the maximum gray entropy in the K images can be determined through the following formula (5):

S_δ＝max{S_k} (5)

the gray level entropy of the target image delta is the largest, which indicates that the target image delta is a focused image in the K images.

The gray entropy of the image expresses the discrete degree of gray distribution of image pixel points, and when the gray value of the image pixel points in the calculation region is changed greatly, the gray entropy is larger; and when the gray values of all image pixel points in the calculation region are equal, the gray entropy is minimum. When the image is completely blurred, the dispersion degree of the gray value distribution of the pixel points is small, and the gray entropy is small; when the image is sharper, the dispersion of the gray value distribution of the pixel points is larger, and the gray entropy is larger, so that the gray entropy can represent the definition degree of the image to a certain degree. Alternatively, the grayscale entropy function may be used as the focus evaluation function.

Yet another possible implementation is: and carrying out differential operation on the current image to obtain a gray level difference value of the current image, and taking the gray level difference value of the current image as a focusing evaluation function.

The difference operation may determine a gradient of a distribution of gray values in the image. Typically, the gradient of an image edge or contour is greater than the gradient elsewhere in the image. Furthermore, the gradient of sharp edges is typically larger than the gradient of blurred edges, and in-focus images typically have sharper edges than out-of-focus images. Thus, the gradient of the image may be used as a focus evaluation function for the image. In some embodiments, for a digital image, the difference operations may include finite difference operations for computing gradients in the image, and the sum of absolute values of the gradients may be obtained as a focus evaluation function for the image. The gradient operators commonly used in the differential operation mainly include Roberts operators, Sobel operators and the like.

In some embodiments, the control device 108 or the control device 116 may perform image analysis as described above on an area in a field of view (FOV) of the photographing apparatus 100 to obtain a focus evaluation function of an in-focus object, which is also referred to as a focus area of the photographing apparatus 100. In some embodiments, the photographing apparatus 100 may include a plurality of focus areas arranged in a preset pattern, for example, an array.

As shown in fig. 4, a display assembly is schematically represented at 400, from which display assembly 400 a schematic field of view 402 of the capture device 100 can be seen. The display component 400 may be the display component 105 of the capture device 100, for example, a viewfinder or screen of the capture device 100. Alternatively, the display component 400 may be the display component 113 of the remote controller 110, for example, a screen of the remote controller 110. As shown in fig. 4, a plurality of focal zones 404 are arranged in an array within the field of view 402.

The control 108 or control 116 may perform image analysis as described above for one or more of the areas of focus 404, for example, for an in-focus object 406 in the field of view 402. In some embodiments, the user may select one or more areas of focus 404 that overlap with the object of focus 406, and the control 108 or control 116 performs image analysis on the user-selected one or more areas of focus 404 as described above, e.g., the user may select one or more areas of focus 404 that overlap with the object of focus 406 via a button or wheel on the capture device 100 or remote control 110. Alternatively, the user may also select one or more focus areas 404 overlapping the in-focus object 406 by touch on a touch screen of the photographing apparatus 100 or the remote controller 110. In addition, the one or more areas of focus 404 selected by the user may be highlighted in the form of a highlight to indicate that the one or more areas of focus 404 selected by the user correspond to the in-focus object 406. Accordingly, the one or more focus areas 404 selected by the user to overlap the in-focus object 406 may also be referred to as target indication boxes, such as the focus area 408 and the focus area 410 shown in fig. 4.

As shown in fig. 4, the focal region 404 has a fixed position and a fixed size in the field of view 402. In other embodiments, the location of the area of focus 404 in the field of view 402 may not be fixed, nor may the size of the area of focus 404 be fixed. For example, the user may touch-select a target area on a touch screen of the photographing apparatus 100 or the remote controller 110 so that the focus area 404 is located in the target area. Optionally, the target area selected by the user is larger than one of the areas of focus 404, so that the target area may display one or more areas of focus 404. In addition, after a user selects a target area on the touch screen in a touch manner, a frame of the target area can be displayed on the touch screen to indicate the selection of the user, and the frame can also be used as a target indication frame. The target indication box may have various shapes, for example, a circle or a polygon. When the target indication frame is circular, the target indication frame may also be referred to as a target indication ring. As shown in fig. 4, the target indication box is square, and in other embodiments, the target indication box may also be triangular or rectangular. Typically, the center of the focus area 404 is referred to as the in-focus point. In some embodiments, the focal region 404 may be so small that the focal region 404 itself is considered the focus point.

As shown in fig. 4, the in-focus object 406 may be a photographic object at a preset position in the field of view 402. In some embodiments, a plurality of subjects may be included in the field of view 402, and a user may select one subject from the plurality of subjects as an object of focus. Correspondingly, the method further comprises the following steps: and receiving a selection instruction of a focusing object in the current image. For example, the user may select one photographing object as a focusing object in a touch manner on a touch screen of the photographing apparatus 100 or the remote controller 110. The photographing apparatus 100 or the remote controller 110 generates a selection instruction of a focusing object according to a selection operation of the focusing object by a user. When the remote controller 110 generates a selection instruction of a focusing object, the selection instruction of the focusing object may also be transmitted to the photographing apparatus 100.

Optionally, the receiving a selection instruction of a focusing object in the current image includes: and receiving a selection instruction of an focusing point on the focusing object in the current image. Specifically, the user can select a focusing object by selecting a focusing point on the focusing object.

Or, the current image is displayed on a touch screen; the receiving of the selection instruction of the focusing object in the current image comprises: and detecting a touch operation on a focusing object displayed on the touch screen. For example, the user may select one photographing object as a focusing object in a touch manner on a touch screen of the photographing apparatus 100 or the remote controller 110. The photographing apparatus 100 or the remote controller 110 generates a selection instruction of a focusing object according to a touch operation of a user on the focusing object.

It can be seen that the control device 108 or the control device 116 may perform the image analysis on the current image to obtain the focusing evaluation function of the focusing object as described above, or may perform the image analysis on one region, for example, one or more focusing regions, in the current image to obtain the focusing evaluation function of the focusing object as described above. After the focusing evaluation function is obtained, the focusing parameter peak value of the focusing object in the current image in focusing can be calculated according to the focusing evaluation function. The focus parameter peak value is a reference indicating when the focused object is in focus. In some embodiments, the focus parameter peak value may be a maximum value of the focus merit function. In other embodiments, the focus parameter peak value may be associated with a variable of the focus evaluation function or a parameter corresponding to a variable of the focus evaluation function. The focus parameter peak value may correspond to a value of the variable at which the focus evaluation function reaches a maximum value. For example, the focus parameter peak value may indicate a distance from the target object to the photographing apparatus, which is also referred to as a target focus distance.

And S302, calculating a current focusing value corresponding to the current adjusting position of the focusing adjusting component.

Optionally, the focus adjustment assembly includes at least one of: focusing ring, adjustment button, adjusting wheel.

When the focus adjustment assembly 106 or the focus adjustment assembly 114 adjusts the focus of the optical assembly 102, the current focus value may change. For example, in embodiments where the focus adjustment assembly 106 includes a mechanical adjustment device such as a focus ring that surrounds the optical assembly 102, the current focus value may change as the focus ring is rotated, and the current focus value may reflect the rotational position of the focus ring. For another example, in embodiments where the focus adjustment assembly 106 or the focus adjustment assembly 114 includes an adjustment wheel, the current focus value may change as the adjustment wheel rotates, and the current focus value may reflect the rotational position of the adjustment wheel.

In some embodiments, the current focus value may be obtained directly from feedback from the focus adjustment component 106 or the focus adjustment component 114. In some other embodiments, the current focus value may also be calculated by a focus evaluation function. In some embodiments, the current focus value may be a value calculated using a focus evaluation function from an image captured according to the current focus adjustment parameter. In some further embodiments, the current focus value may be associated with a variable of the focus evaluation function or a parameter corresponding to a variable of the focus evaluation function. For example, the current focus value may indicate a current focus distance of the photographing apparatus. That is, assuming that an object is placed in front of the photographing apparatus and that the distance between the object and the photographing apparatus is equal to the current focus distance, the image of the object captured by the photographing apparatus is sharp. By adjusting the optical assembly 102 so that the current focal distance is equal to the target focal distance, the photographing apparatus 100 can be focused on the target object.

Step S303, performing focusing prompt according to the focusing parameter peak value and the current focusing value, and prompting a user to operate the focusing adjusting component so as to enable the focusing parameter peak value to be consistent with the current focusing value.

After the focus parameter peak value and the current focus value are calculated, a focus prompt may be made based on the focus parameter peak value and the current focus value, which may prompt the user whether the optical assembly 102 of the photographing apparatus 100 is fully focused on the target object, e.g., whether the current focus value is equal to the focus parameter peak value, or/and how far out of focus is, e.g., how much the difference between the current focus value and the focus parameter peak value is.

In the present embodiment, there are various ways of the focus indication, for example, the focus indication is performed in a visual form, an auditory form, a mechanical form, etc., and each way of the focus indication will be described in the following embodiments.

Taking the example of a visual form of a focus prompt, the focus prompt may be visually displayed on the display component 105 or the display component 113, for example, a viewfinder or a screen of the photographing apparatus 100, or a screen of the remote controller 110. When the focus cue is displayed on the screen, the image photographed by the photographing apparatus 100 may be displayed on the screen simultaneously with the focus cue, and the focus cue may be overlaid or superimposed on the image displayed on the screen. When the user operates the focus adjustment assembly 106 or the focus adjustment assembly 114 to change the focus of the photographing apparatus 100, the user can see the image and the focus prompt at the same time to determine whether the image is in focus.

In the embodiment, the focusing parameter peak value of the focusing object in the current image when focusing is performed is calculated, the current focusing value corresponding to the current adjusting position of the focusing adjusting assembly is calculated, and the focusing prompt is performed according to the focusing parameter peak value and the current focusing value to prompt a user to operate the focusing adjusting assembly so as to enable the focusing parameter peak value to be consistent with the current focusing value, so that the shooting device can quickly and accurately focus on the target object, and the user can quickly and accurately find the focusing position of the focusing object when focusing manually.

The embodiment of the invention provides a manual focusing prompting method. Fig. 5 is a flowchart of a prompting method for manual focusing according to another embodiment of the present invention. As shown in fig. 5, based on the embodiment shown in fig. 3, the step S303 of performing focus prompting according to the focus parameter peak value and the current focus value may include:

step S501, displaying a first indicator on a display component, wherein the first indicator is used for indicating the focusing parameter peak value.

Step S502, displaying a second indication mark on the display component, wherein the second indication mark is used for indicating the current focusing value.

Wherein an indicated distance between the first indicator and the second indicator is related to a difference between the focus parameter peak value and the current focus value.

In this embodiment, the indication distance between the first indication mark and the second indication mark may be a distance between the first indication mark and the second indication mark on the display component. The indicated distance is related to a difference between the focus parameter peak value and the current focus value, e.g., the indicated distance may be proportional to the difference between the focus parameter peak value and the current focus value.

The current focus value may be adjusted by the focus adjustment assembly 106 or the focus adjustment assembly 114. In some embodiments, the current focus value may be associated with an adjusted position of focus adjustment component 106 or focus adjustment component 114. The adjusted position may be a position within the adjustment range of the focus adjustment assembly 106 or the focus adjustment assembly 114. For example, when the focus adjustment assembly 106 includes a focus ring or an adjustment wheel, the adjustment position may be a rotational position of the focus ring or a rotational position of the adjustment wheel.

Alternatively, the first indicator for indicating the focus parameter peak value and the second indicator for indicating the current focus value may be displayed at any suitable location of the display component, for example, at the middle, upper, lower, left, right, upper left corner, lower left corner, upper right corner, lower right corner, etc. of the display component.

In this embodiment, the step S501 of displaying the first indicator on the display component includes: displaying a first indicator in a preset area of a display assembly; correspondingly, step S502 displays a second indicator on the display component, including: if the current focusing value is smaller than the focusing parameter peak value, displaying the second indication mark on the first side of the preset area; if the current focusing value is larger than the focusing parameter peak value, displaying the second indication mark on a second side of the preset area, wherein the second side is opposite to the first side; displaying the second indicator in the preset area if the current focus value is equal to the focus parameter peak value, the second indicator overlapping with the first indicator.

Specifically, the first indication mark for indicating the focusing parameter peak value is displayed in a preset area of the display component, where the preset area may be one of the preset areas of the display component, such as the middle, upper, lower, left, right, upper left corner, lower left corner, upper right corner, and lower right corner, or may be an area selected by the user on the display component. And determining the position of a second indicating mark for indicating the current focusing value relative to the first indicating mark according to the magnitude relation between the focusing parameter peak value and the current focusing value. Specifically, if the current focusing value is smaller than the focusing parameter peak value, the second indication mark is displayed on one side of the first indication mark; if the current focusing value is larger than the focusing parameter peak value, displaying the second indication mark on the other side of the first indication mark; the second indicator overlaps the first indicator if the current focus value is equal to the focus parameter peak value.

As shown in fig. 6, a first indicator 601 is used to indicate a focus parameter peak value, and a second indicator 602 is used to indicate a current focus value. The first indicator 601 is displayed in a predetermined area 603 of the display assembly 600. Displaying a second indicator 602 to the left of the first indicator 601 if the current focus value is less than the focus parameter peak value; if the current focus value is greater than the focus parameter peak value, a second indicator 602 is displayed to the right of the first indicator 601, as shown in fig. 7. As can be seen from a comparison between fig. 6 and fig. 7, when the current focus value is smaller than the focus parameter peak value, the second indicator 602 is located on the left side of the first indicator 601, and when the current focus value is larger than the focus parameter peak value, the second indicator 602 is located on the right side of the first indicator 601, and the left side and the right side of the second indicator 602 are opposite. If the current focus value is equal to the focus parameter peak value, the second indicator flag 602 and the first indicator flag 601 overlap. Here, the position where the first indicator 601 is displayed is not particularly limited, the position of the second indicator 602 relative to the first indicator 601 is not particularly limited, and the shapes of the first indicator 601 and the second indicator 602 are not limited.

Optionally, the preset area includes the focusing object. As shown in fig. 6 and 7, the preset area 603 where the first indicator 601 is located may further include a focusing object. Optionally, the preset area is larger than the first indicator 601. The focusing object may specifically be the focusing object 406 as shown in fig. 4.

Optionally, the preset area includes a target indication frame, and the target indication frame is used for indicating an object selected for focusing. For example, the preset region 603 in which the first indicator 601 is located may further include a target indication frame for indicating an object selected for focusing. The target indication box may be a focus area 408 and a focus area 410 as shown in fig. 4.

Optionally, after a preset time when focusing is completed, the first indicator mark and/or the second indicator mark disappear.

In other embodiments, the step S501 of displaying the first indicator on the display component includes: displaying the first indicator mark on a scale image displayed on a display assembly; correspondingly, step S502 displays a second indicator on the display component, including: displaying the second indication mark on a scale image displayed on a display component; wherein the first indication mark is located at a fixed position on the scale image, and the second indication mark moves on the scale image along with the change of the adjustment position of the focusing adjustment component.

As shown in fig. 8, the display assembly displays a focus prompt icon 800, the focus prompt icon 800 includes a scale image 802, and optionally, the scale image 802 includes a scale curve. The scale curve is a semicircular arc. The first indicator 804 is used to indicate a focus parameter peak value, and the second indicator 806 is used to indicate a current focus value. Optionally, the first indicator 804 is located at a fixed position on the scale image 802, and the second indicator 806 can move on the scale image 802 as the adjusted position of the focus adjustment assembly 106 or the focus adjustment assembly 114 changes. The distance between the first indicator 804 and the second indicator 806 represents an indication distance that is related to the difference between the focus parameter peak value and the current focus value.

The displaying the first indicator on the scale image displayed on the display assembly includes: displaying a first indication mark at a middle position of a scale image displayed on the display assembly; correspondingly, the displaying the second indication mark on the scale image displayed on the display component comprises: displaying the second indication mark on the scale image on a first side of the intermediate position if the current focus value is less than the focus parameter peak value; displaying the second indication mark on a second side of the intermediate position on the scale image if the current focus value is greater than the focus parameter peak value, the second side being opposite to the first side; displaying the second indication mark at the intermediate position if the current focus value is equal to the focus parameter peak value.

As shown in fig. 8, a first indicator 804 is displayed at a middle position of the scale image 802. If the current focus value is less than the focus parameter peak value, a second indicator 806 is displayed to the left of the first indicator 804.

As shown in fig. 9, a first indicator 804 is displayed at a middle position of the scale image 802. If the current focus value is greater than the focus parameter peak value, a second indicator 806 is displayed to the right of the first indicator 804.

As shown in fig. 10, a first indicator 804 is displayed at a middle position of the scale image 802. If the current focus value is equal to the focus parameter peak value, the second indicator 806 is displayed in the middle position of the scale image 802, i.e. the second indicator 806 and the first indicator 804 overlap.

In some embodiments, when the current focus value is less than the focus parameter peak value, a second indicator 806 may also be displayed to the right of the first indicator 804; when the current focus value is greater than the focus parameter peak value, a second indicator 806 is displayed to the left of the first indicator 804.

In other embodiments, the scale image comprises a scale line.

As shown in fig. 11, the display assembly displays a focus prompt icon 1100, the focus prompt icon 1100 includes a scale image 1102, and the scale image 1102 includes a scale straight line. The first indicator 1104 is used to indicate the focus parameter peak value, and the second indicator 1106 is used to indicate the current focus value. Optionally, the first indicator 1104 is located in a fixed position on the scale image 1102, and the second indicator 1106 can be moved over the scale image 1102 as the adjusted position of the focus adjustment assembly 106 or the focus adjustment assembly 114 changes. The distance between the first indicator 1104 and the second indicator 1106 represents an indicated distance that is related to the difference between the focus parameter peak value and the current focus value.

As shown in fig. 11, a first indicator 1104 is displayed at a middle position of the scale image 1102. If the current focus value is less than the focus parameter peak value, a second indicator 1106 is displayed to the left of the first indicator 1104.

As shown in fig. 12, the first indicator 1104 is displayed at a middle position of the scale image 1102. If the current focus value is greater than the focus parameter peak value, a second indicator 1106 is displayed to the right of the first indicator 1104.

As shown in fig. 13, the first indicator 1104 is displayed at a middle position of the scale image 1102. If the current focus value is equal to the focus parameter peak value, the second indicator 1106 is displayed in the middle of the scale image 1102, i.e., the second indicator 1106 and the first indicator 1104 overlap.

In some embodiments, when the current focus value is less than the focus parameter peak value, a second indicator 1106 may also be displayed to the right of the first indicator 1104; when the current focus value is greater than the focus parameter peak value, a second indicator 1106 is displayed to the left of the first indicator 1104.

Optionally, the middle position of the scale image is located in a preset area of the display assembly, the preset area includes a target indication frame, and the target indication frame is used for indicating an object selected for focusing.

For example, the middle position of the scale image 802 or the scale image 1102 is located in a preset area of the display assembly, the preset area including a target indication frame for indicating an object selected for focusing.

In some other embodiments, step S501 displays a first indicator on a display component, the first indicator indicating the focus parameter peak value, including: displaying a first frame on a display component, the first frame indicating the focus parameter peak values; correspondingly, step S502 displays a second indicator on the display component, where the second indicator is used to indicate the current focus value, and includes: displaying a second border on the display component, the second border indicating the current focus value; wherein a center of the second bezel overlaps a center of the first bezel.

Optionally, the size of the first frame is unchanged, and the size of the second frame changes with the change of the adjustment position of the focus adjustment assembly.

As shown in fig. 14, the display assembly displays a focusing prompt icon 1400, the focusing prompt icon 1400 includes a first frame 1402 and a second frame 1404, the first frame 1402 is used for indicating a focusing parameter peak value, the second frame 1404 is used for indicating a current focusing value, that is, the first indication mark may be the first frame 1402 specifically, and the second indication mark may be the second frame 1404 specifically. Optionally, the center of the first border 1402 and the center of the second border 1404 overlap. The size of the first border 1402 is constant and the size of the second border 1404 is varied as the adjusted position of the focus adjustment assembly is varied. The distance d between the bottom edge of the first border 1402 and the bottom edge of the second border 1404 represents an indicated distance that is related to the difference between the focus parameter peak value and the current focus value.

The displaying a second bezel on the display assembly, comprising: if the current focusing value is smaller than the focusing parameter peak value, displaying the second frame inside the first frame; displaying the second frame outside the first frame if the current focusing value is greater than the focusing parameter peak value; overlaying the second bezel display on the first bezel if the current focus value is equal to the focus parameter peak value.

As shown in fig. 14, if the current focus value is less than the focus parameter peak value, a second border 1404 is displayed inside the first border 1402.

As shown in fig. 15, if the current focus value is greater than the focus parameter peak value, a second border 1404 is displayed outside the first border 1402.

As shown in fig. 16, if the current focus value is equal to the focus parameter peak value, the second border 1404 is displayed overlaid on the first border 1402, i.e., the second border 1404 and the first border 1402 overlap.

Or, the displaying the second frame on the display component includes: if the current focusing value is larger than the focusing parameter peak value, displaying the second frame inside the first frame; displaying the second frame outside the first frame if the current focus value is less than the focus parameter peak value; overlaying the second bezel display on the first bezel if the current focus value is equal to the focus parameter peak value.

For example, when the current focus value is less than the focus parameter peak value, the second border 1404 is displayed outside the first border 1402. When the current focus value is greater than the focus parameter peak value, a second border 1404 is displayed inside the first border 1402. When the current focus value is equal to the focus parameter peak value, a second border 1404 is displayed overlaid on the first border 1402.

Optionally, the first border is a target indication frame, and the target indication frame is used for indicating an object selected for focusing. After the preset time for completing focusing, the second frame disappears.

For example, the first border 1402 is a target indication frame for indicating an object selected for focusing. After a preset time for focusing to be completed, the second bezel 1404 disappears.

In some further embodiments, the displaying a first frame on the display component, the first frame indicating the focus parameter peak value, comprises: displaying a first ring on a display assembly, the first ring indicating the focus parameter peak values; correspondingly, the displaying a second frame on the display component, the second frame being used for indicating the current focus value, includes: displaying a second ring on a display component, the second ring to indicate the current focus value; wherein the second ring and the first ring are concentric circles.

Optionally, the size of the first ring is unchanged, and the size of the second ring is changed with the change of the adjustment position of the focus adjustment assembly.

As shown in fig. 17, the display assembly displays a focus prompt icon 1700, the focus prompt icon 1700 includes a first ring 1702 and a second ring 1704, the first ring 1702 is used for indicating a focus parameter peak value, the second ring 1704 is used for indicating a current focus value, that is, the first indicator may specifically be the first ring 1702, and the second indicator may specifically be the second ring 1704. Optionally, the center of the first loop 1702 overlaps the center of the second loop 1704, i.e., the first loop 1702 and the second loop 1704 are concentric circles. The size of the first loop 1702 is constant and the size of the second loop 1704 varies as the adjustment position of the focus adjustment assembly varies. The difference d between the radius of the first loop 1702 and the radius of the second loop 1704 represents an indicated distance that is related to the difference between the focus parameter peak value and the current focus value.

The displaying a second ring on a display assembly, comprising: displaying the second ring inside the first ring if the current focus value is less than the focus parameter peak value; displaying the second ring outside the first ring if the current focus value is greater than the focus parameter peak value; displaying the second ring overlaid on the first ring if the current focus value is equal to the focus parameter peak value.

As shown in fig. 17, if the current focus value is less than the focus parameter peak value, a second ring 1704 is displayed inside the first ring 1702.

As shown in fig. 18, if the current focus value is greater than the focus parameter peak value, a second ring 1704 is displayed outside of the first ring 1702.

As shown in fig. 19, if the current focus value is equal to the focus parameter peak value, the second loop 1704 is displayed overlaid on the first loop 1702, i.e., the second loop 1704 and the first loop 1702 overlap.

Alternatively, the displaying the second ring on the display component includes: displaying the second ring inside the first ring if the current focus value is greater than the focus parameter peak value; displaying the second ring outside the first ring if the current focus value is less than the focus parameter peak value; displaying the second ring overlaid on the first ring if the current focus value is equal to the focus parameter peak value.

For example, when the current focus value is less than the focus parameter peak value, second loop 1704 will be displayed outside of first loop 1702. When the current focus value is greater than the focus parameter peak value, the second ring 1704 is displayed inside the first ring 1702. When the current focus value is equal to the focus parameter peak value, the second ring 1704 is displayed overlaid on the first ring 1702.

Optionally, the first ring is a target indication frame, and the target indication frame is used for indicating an object selected for focusing. After a preset time when focusing is completed, the second ring disappears.

For example, the first ring 1702 is a target indication frame for indicating an object selected for focusing. After a preset time for focusing to be completed, the second ring 1704 disappears.

In some other embodiments, step S501 displays a first indicator on a display component, the first indicator indicating the focus parameter peak value, including: displaying a line segment on a display component, the line segment being used to indicate the focus parameter peak value; correspondingly, step S502 displays a second indicator on the display component, where the second indicator is used to indicate the current focus value, and includes: displaying a semicircle on a display assembly, the semicircle being used to indicate the current focus value; the center of the line segment is overlapped with the circle center of the semicircle, and the indicating distance between the first indicating mark and the second indicating mark comprises the diameter of the bottom of the semicircle and the included angle between the line segments.

Optionally, the position of the line segment is unchanged; when the adjusting position of the focusing adjusting component is changed, the semicircle rotates by taking the circle center as the rotation center.

As shown in fig. 20, the display component displays a focus prompt icon 2000, the focus prompt icon 2000 includes a line segment 2002 and a semi-circle 2004, the line segment 2002 is used for indicating a peak value of a focus parameter, the semi-circle 2004 is used for indicating a current focus value, that is, the first indication mark may be the line segment 2002 specifically, and the second indication mark may be the semi-circle 2004 specifically. Optionally, the center of line segment 2002 overlaps the center of semi-circle 2004. The position of the line segment 2002 is not changed, and when the adjustment position of the focus adjustment assembly is changed, the semi-circle 2004 rotates around the center of the circle, for example, clockwise or counterclockwise around the center of the circle. The angle θ between the diameter 2006 of the bottom of the semi-circle 2004 and the line segment 2002 represents an indicated distance that is related to the difference between the focus parameter peak value and the current focus value.

If the current focusing value is smaller than the focusing parameter peak value, an included angle between the diameter of the bottom of the semicircle and the line segment is formed by anticlockwise rotation of the semicircle by taking the circle center as a rotation center; if the current focusing value is larger than the focusing parameter peak value, an included angle between the diameter of the bottom of the semicircle and the line segment is formed by clockwise rotation of the semicircle by taking the circle center as a rotation center; the diameter of the bottom of the semicircle overlaps the line segment if the current focus value is equal to the focus parameter peak value.

As shown in fig. 20, if the current focus value is smaller than the focus parameter peak value, the semicircle 2004 rotates counterclockwise around the center of the circle as the rotation center, and the table of the included angle θ between the diameter 2006 of the bottom of the semicircle 2004 and the line segment 2002 is formed by rotating the semicircle 2004 counterclockwise around the center of the circle as the rotation center.

As shown in fig. 21, if the current focus value is greater than the focus parameter peak value, the semicircle 2004 rotates clockwise with the center of the circle as the rotation center, and the table of the included angle θ between the diameter 2006 of the bottom of the semicircle 2004 and the line segment 2002 is formed by rotating the semicircle 2004 clockwise with the center of the circle as the rotation center.

As shown in fig. 22, if the current focus value is equal to the focus parameter peak value, the diameter 2006 of the bottom of the semicircle 2004 overlaps the line segment 2002.

Or if the current focusing value is larger than the focusing parameter peak value, the included angle between the diameter of the bottom of the semicircle and the line segment is formed by anticlockwise rotation of the semicircle by taking the circle center as a rotation center; if the current focusing value is smaller than the focusing parameter peak value, an included angle between the diameter of the bottom of the semicircle and the line segment is formed by clockwise rotation of the semicircle by taking the circle center as a rotation center; the diameter of the bottom of the semicircle overlaps the line segment if the current focus value is equal to the focus parameter peak value.

For example, when the current focusing value is smaller than the focusing parameter peak value, the semicircle 2004 rotates clockwise around the center of the circle as the rotation center, and the angle θ between the diameter 2006 of the bottom of the semicircle 2004 and the line segment 2002 is formed by rotating the semicircle 2004 clockwise around the center of the circle as the rotation center. When the current focusing value is larger than the focusing parameter peak value, the semicircle 2004 rotates counterclockwise with the center of the circle as the rotation center, and the table of the included angle θ between the diameter 2006 of the bottom of the semicircle 2004 and the line segment 2002 is formed by rotating the semicircle 2004 counterclockwise with the center of the circle as the rotation center. When the current focus value is equal to the focus parameter peak value, the diameter 2006 of the bottom of the semicircle 2004 overlaps the line segment 2002.

Optionally, the line segment and the semicircle are located in a target indicating ring, and the target indicating ring is used for indicating an object selected for focusing. The radius of the target indicating ring is greater than or equal to the radius of the semicircle.

As shown in fig. 20-22, 2008 represents a target indication ring, and it can be seen that the line segment 2002 and the semi-circle 2004 are located within the target indication ring 2008, the target indication ring 2008 is used to indicate an object for selecting focus, and the radius of the target indication ring 2008 is greater than or equal to the radius of the semi-circle 2004.

In some other embodiments, step S501 displays a first indicator on a display component, the first indicator indicating the focus parameter peak value, including: displaying a first line segment on a display component, the first line segment indicating the focus parameter peak value; correspondingly, step S502 displays a second indicator on the display component, where the second indicator is used to indicate the current focus value, and includes: displaying a second line segment on a display assembly, the second line segment indicating the current focus value; wherein the center of the first line segment overlaps the center of the second line segment, and the indication distance between the first indicator mark and the second indicator mark comprises the included angle between the first line segment and the second line segment.

Optionally, the position of the first line segment is unchanged; when the adjustment position of the focusing adjustment component is changed, the second line segment rotates by taking the center of the second line segment as a rotation center.

As shown in fig. 23, the display assembly is displayed with a focusing cue icon 2300, the focusing cue icon 2300 comprising a first line segment 2302 and a second line segment 2304, the first line segment 2302 being used for indicating a focusing parameter peak value, the second line segment 2304 being used for indicating a current focusing value, i.e. the first indicator mark may specifically be the first line segment 2302, and the second indicator mark may specifically be the second line segment 2304. Optionally, the center of the first line segment 2302 and the center of the second line segment 2304 overlap. The position of the first line segment 2302 is not changed, and when the adjustment position of the focus adjustment assembly is changed, the second line segment 2304 is rotated with the center thereof as a rotation center, for example, clockwise or counterclockwise. An angle θ between the first line segment 2302 and the second line segment 2304 represents an indication distance related to a difference between the focus parameter peak value and the current focus value.

If the current focusing value is smaller than the focusing parameter peak value, an included angle between the first line segment and the second line segment is formed by anticlockwise rotation of the second line segment by taking the center of the second line segment as a rotation center; if the current focusing value is larger than the focusing parameter peak value, an included angle between the first line segment and the second line segment is formed by clockwise rotation of the second line segment by taking the center of the second line segment as a rotation center; the first line segment and the second line segment overlap if the current focus value is equal to the focus parameter peak value.

As shown in fig. 23, if the current focus value is smaller than the focus parameter peak value, the second line segment 2304 rotates counterclockwise with its center as the rotation center, and the angle θ between the first line segment 2302 and the second line segment 2304 is formed by rotating the second line segment 2304 counterclockwise with its center as the rotation center.

As shown in fig. 24, if the current focus value is greater than the focus parameter peak value, the second line segment 2304 rotates clockwise with its center as the rotation center, and the angle θ between the first line segment 2302 and the second line segment 2304 is formed by the second line segment 2304 rotating clockwise with its center as the rotation center.

As shown in fig. 25, if the current focus value is equal to the focus parameter peak value, the first line segment 2302 overlaps the second line segment 2304.

Or if the current focusing value is larger than the focusing parameter peak value, the included angle between the first line segment and the second line segment is formed by the second line segment rotating anticlockwise by taking the center of the second line segment as a rotation center; if the current focusing value is smaller than the focusing parameter peak value, an included angle between the first line segment and the second line segment is formed by clockwise rotation of the second line segment by taking the center of the second line segment as a rotation center; the first line segment and the second line segment overlap if the current focus value is equal to the focus parameter peak value.

For example, when the current in-focus value is smaller than the in-focus parameter peak value, the second line segment 2304 rotates clockwise with its center as the rotation center, and the included angle θ between the first line segment 2302 and the second line segment 2304 is formed by rotating the second line segment 2304 clockwise with its center as the rotation center. When the current focusing value is greater than the focusing parameter peak value, the second line segment 2304 rotates counterclockwise with its center as the rotation center, and the included angle θ between the first line segment 2302 and the second line segment 2304 is formed by the second line segment 2304 rotating counterclockwise with its center as the rotation center. When the current focus value is equal to the focus parameter peak value, the first line segment 2302 overlaps the second line segment 2304.

Optionally, the first line segment and the second line segment are located in a target indication ring, and the target indication ring is used for indicating an object selected for focusing.

As shown in fig. 23-25, 2306 represents a target indicating loop, and it can be seen that the first line segment 2302 and the second line segment 2304 are positioned within the target indicating loop 2306.

Optionally, the diameter of the target indicating ring is greater than or equal to the length of the first line segment; or the diameter of the target indicating ring is greater than or equal to the length of the second line segment.

For example, the diameter of the targeting loop 2306 is greater than or equal to the length of the first line segment 2302, or the diameter of the targeting loop 2306 is greater than or equal to the length of the second line segment 2304.

In the present embodiment, the display component may be a viewfinder of the photographing apparatus 100, may be a screen of the photographing apparatus 100, and may be a screen of the remote controller 110.

It is to be understood that when the current focus value is equal to the focus parameter peak value, the current image displayed by the display assembly is in focus. If the current focusing value is not equal to the focusing parameter peak value, the current image displayed by the display component is out of focus, and at this time, the focusing adjustment component 106 or the focusing adjustment component 114 needs to be adjusted according to the indication distance between the first indication mark and the second indication mark displayed on the display component, so as to reduce the indication distance between the first indication mark and the second indication mark, thereby focusing the current image.

The embodiment provides the focusing prompt icon in various forms to prompt the user whether the current image is focused or not and how to adjust the focusing adjustment component to focus the current image, so that the user can quickly and accurately find the focusing position of the focusing object when the focusing object is focused during manual focusing, and meanwhile, the flexibility of displaying the focusing prompt icon is increased.

The embodiment of the invention provides a manual focusing prompting method. Fig. 26 is a flowchart of a prompting method for manual focusing according to another embodiment of the present invention. As shown in fig. 26, on the basis of the embodiment shown in fig. 3, the method in this embodiment may include:

step S2601, calculating a focusing parameter peak value of the focusing object in the current image when focusing.

The specific principle and implementation of step S2601 are similar to those of step S301, and are not described herein again.

Step S2602, calculating a current focus value corresponding to the current adjustment position of the focus adjustment assembly.

The specific principle and implementation of step S2602 are similar to those of step S302, and are not described herein again.

Step S2603, displaying a first indicator on the display component, where the first indicator is used to indicate the focusing parameter peak value; displaying a second indicator on the display component, the second indicator for indicating the current focus value.

The manner of displaying the first indicator and the second indicator on the display component is specifically shown in fig. 6-25, and will not be described herein again.

Optionally, the indicated distance between the first indicator and the second indicator is proportional to the difference between the focus parameter peak value and the current focus value.

Taking fig. 11 as an example, a first indicator 1104 is displayed at a middle position of the scale image 1102, and if the current focus value is smaller than the focus parameter peak value, a second indicator 1106 is displayed at the left side of the first indicator 1104. The distance between the first indicator 1104 and the second indicator 1106 is proportional to the difference between the focus parameter peak value and the current focus value, i.e., the greater the difference between the focus parameter peak value and the current focus value, the greater the distance between the first indicator 1104 and the second indicator 1106; the smaller the difference between the focus parameter peak value and the current focus value, the smaller the distance between the first indicator 1104 and the second indicator 1106.

When the user observes on the display assembly that the first indicator 1104 and the second indicator 1106 are misaligned, the user may manually adjust the focus adjustment assembly 106 or the focus adjustment assembly 114 to decrease the indicated distance between the first indicator and the second indicator. When the manual focusing is completed, i.e., the current focused value is exactly equal to the focusing parameter peak value, e.g., the first indicator mark 1104 and the second indicator mark 1106 coincide, the user may no longer wish to see the first indicator mark 1104 and/or the second indicator mark 1106. Optionally, after a preset time for focusing completion, the first indicator 1104 and/or the second indicator 1106 disappear. Optionally, the first indicator mark 1104 and/or the second indicator mark 1106 are/is controlled to disappear within a preset time after the first indicator mark 1104 and the second indicator mark 1106 are overlapped, and the preset time is not limited to 1 second, 2 seconds, 3 seconds or the like.

Step S2604, displaying the current image on a display component, wherein the first indicator and the second indicator are overlaid on the current image.

The display assembly includes a screen.

In the present embodiment, the display component may be a screen of the photographing apparatus 100, or may be a screen of the remote controller 110. In this embodiment, the display component may further display a current image captured by the capturing device 100, where the current image includes a focusing object, and at this time, the current image and any of the focusing prompt icons described in the above embodiments are simultaneously displayed on the display component. Optionally, the focus prompt icon may be overlaid or superimposed on the current image. Therefore, the user can watch the current image while manually focusing, and the user can conveniently detect the focusing result.

Step S2605, displaying a target indication frame for prompting the focusing object on the display component.

In some embodiments, a target indication frame for prompting a focusing object may be further displayed on the display component, the target indication frame including a target prompt ring. For example, the current image, the target indication frame of the focusing object in the current image, and any of the focusing prompt icons described in the above embodiments will be displayed on the display component at the same time.

At least one of the first indicator mark and the second indicator mark is displayed outside the target indicator frame at a position within a preset distance range from the target indicator frame. For example, at least one of the first indicator and the second indicator is displayed outside the target indication frame and in the vicinity of the target indication frame.

Alternatively, at least one of the first indicator and the second indicator is displayed within the target indication frame.

Still alternatively, at least one of the first indicator and the second indicator is displayed on the target indication frame.

After a preset time when focusing is completed, the target indication frame disappears. Optionally, the control target indication frame disappears within a preset time after the current focusing value is equal to the focusing parameter peak value, where the preset time is not limited to 1 second, 2 seconds, or 3 seconds.

According to the embodiment, the current image and the focusing prompt icon are simultaneously displayed on the display assembly, so that a user can watch whether the current image is clear or not while manually focusing, and the user can conveniently detect the focusing result.

The embodiment of the invention provides a manual focusing prompting method. On the basis of the foregoing embodiment, the method in this embodiment may further include: and updating the current focusing value according to the change of the adjustment position of the focusing adjustment assembly.

For example, when the user adjusts the focus adjustment assembly 106 or the focus adjustment assembly 114, the current focus value changes as the adjusted position of the focus adjustment assembly 106 or the focus adjustment assembly 114 changes.

The updating the current focusing value according to the change of the adjustment position of the focusing adjustment component comprises: and updating the current focusing value according to the rotation angle of the focusing ring. For example, the focus adjustment assembly 106 includes a focus ring that surrounds the optical assembly 102, and the current focus value changes as the focus ring is rotated.

When the current focus value changes, the indication distance between the first indication mark and the second indication mark changes, that is, when the adjustment position of the focus adjustment assembly 106 or the focus adjustment assembly 114 changes, the indication distance between the first indication mark and the second indication mark changes.

In some embodiments, the indicated distance between the first indicator and the second indicator varies uniformly as the adjustment position of the focus adjustment assembly varies. The change of the adjustment position of the focus adjustment assembly may also be referred to as an adjustment amount of the focus adjustment assembly, and the indication distance between the first indication mark and the second indication mark is uniformly changed with the adjustment amount of the focus adjustment assembly. For example, the focus adjustment assembly 106 includes a focus ring surrounding the optical assembly 102, and in this case, the change of the adjustment position of the focus adjustment assembly 106, that is, the adjustment amount, may specifically be a rotation angle of the focus ring, where the rotation angle of the focus ring refers to an amount of change of an angle of the focus ring when the focus ring rotates. When the focusing ring rotates, the indication distance between the first indication mark and the second indication mark changes, optionally, the change amount of the indication distance is proportional to the rotation angle of the focusing ring, that is, the indication distance between the first indication mark and the second indication mark changes uniformly with the rotation angle of the focusing ring.

In some further embodiments, the indicated distance between the first indicator and the second indicator varies non-uniformly with changes in the adjusted position of the focus adjustment assembly. For example, when the second indicator is closer to the first indicator, that is, the absolute value of the difference between the current focus value and the focus parameter peak value is smaller, the amount of change in the indication distance caused by the same adjustment amount of the focus adjustment component is larger. For example, the focus adjustment assembly 106 includes a focus ring surrounding the optical assembly 102, and in this case, the change of the adjustment position of the focus adjustment assembly 106, i.e., the adjustment amount, may be specifically the rotation angle of the focus ring. The indicating distance between the first indicating mark and the second indicating mark is non-uniformly changed along with the rotation angle of the focusing ring. For example, when the second indicator is closer to the first indicator, the amount of change in the indication distance caused by the same angle of rotation of the focus ring is larger.

In some embodiments, the rate of change of the indicated distance between the first indicator and the second indicator increases as the indicated distance decreases. The amount of change in the indicated distance by the same adjustment amount of the focus adjustment assembly may be referred to as a rate of change in the indicated distance, and the rate of change in the indicated distance may gradually increase as the indicated distance decreases, that is, the rate of change in the indicated distance gradually increases as the second indicator gradually approaches the first indicator. For example, the focus adjustment assembly 106 includes a focus ring that surrounds the optical assembly 102, in which case the rate of change of the indicated distance may be the amount of change in the indicated distance caused by the focus ring rotating the same angle.

In some other embodiments, when the indication distance between the first indication mark and the second indication mark is within different preset ranges, the change rates of the indication distance are different, and the preset ranges and the change rates of the indication distance are in one-to-one correspondence. As shown in fig. 27, when the second indicator 1106 is at position 1, the indicating distance between the second indicator 1106 and the first indicator 1104 is d 1; when the second indicator flag 1106 is in position 2, the indicated distance between the second indicator flag 1106 and the first indicator flag 1104 is d 2; when the second indicator flag 1106 is in position 3, the indicated distance between the second indicator flag 1106 and the first indicator flag 1104 is d 3; when the second indicator flag 1106 is at position 4, the indicated distance between the second indicator flag 1106 and the first indicator flag 1104 is d 4. It can be seen that d1, d2, d3 and d4 are gradually decreased, when the second indicator flag 1106 is located between position 1 and position 2, the indicating distance is in a range from d1 to d2, in this range, the change rate of the indicating distance is unchanged, namely, the change amount of the indicating distance caused by the same adjustment amount of the focus adjustment assembly is unchanged, and when the indicating distance is in a range from d1 to d2, the change rate of the indicating distance is recorded as r 1; similarly, when the second indicator 1106 is located between position 2 and position 3, the indicating distance is in the range of d2 to d3, and the rate of change of the indicating distance is unchanged, denoted as r 2; when the second indicator 1106 is located between position 3 and position 4, the indicating distance is in the range of d3 to d4, the rate of change of the indicating distance is unchanged, denoted as r 3; when the second indicator 1106 is located between position 4 and the first indicator 1104, the indicated distance is in the range of d4 to 0, and the rate of change of the indicated distance is unchanged, denoted as r 4. In the process that the second indicator mark gradually approaches the first indicator mark, r1, r2, r3 and r4 are sequentially increased.

The change rate of the indication distance between the first indication mark and the second indication mark comprises the change amount of the indication distance between the first indication mark and the second indication mark when the focusing ring rotates for a unit angle. For example, the focus adjustment assembly 106 includes a focus ring that surrounds the optical assembly 102, in which case the rate of change of the indicated distance may be the amount of change in the indicated distance caused by a unit angle of rotation of the focus ring.

In the embodiment, the indication distance between the first indication mark and the second indication mark varies non-uniformly with the adjustment amount of the focusing adjustment assembly, for example, when the second indication mark is closer to the first indication mark, the amount of variation of the indication distance caused by the same adjustment amount of the focusing adjustment assembly is larger, so that the display sensitivity of the focusing indication can be improved.

The embodiment of the invention provides a manual focusing prompting method. On the basis of the above embodiment, the focus distance is uniformly changed with the change of the adjustment position of the focus adjustment assembly. For example, when the user adjusts the focus adjustment assembly 106 or the focus adjustment assembly 114, the focus distance of the photographing apparatus changes as the adjusted position of the focus adjustment assembly 106 or the focus adjustment assembly 114 changes. Alternatively, the focus distance of the photographing apparatus is uniformly changed as the adjustment position of the focus adjustment assembly 106 or the focus adjustment assembly 114 is changed.

For example, the focus adjustment assembly 106 includes a focus ring surrounding the optical assembly 102, and in this case, the change of the adjustment position of the focus adjustment assembly 106, that is, the adjustment amount, may specifically be a rotation angle of the focus ring, where the rotation angle of the focus ring refers to an amount of change of an angle of the focus ring when the focus ring rotates. At this time, the focus distance is uniformly changed with the rotation angle of the focus ring.

In other embodiments, the focus distance varies non-uniformly with changes in the adjusted position of the focus adjustment assembly. Optionally, the smaller the difference between the focus parameter peak value and the current focus value is, the smaller the variation of the focus distance caused by the same variation of the adjustment position is.

For example, the focus adjustment assembly 106 includes a focus ring surrounding the optical assembly 102, and in this case, the change of the adjustment position of the focus adjustment assembly 106, i.e., the adjustment amount, may be specifically the rotation angle of the focus ring. The focusing distance is non-uniformly changed along with the rotation angle of the focusing ring. Specifically, the smaller the difference between the focus parameter peak value and the current focus value is, the smaller the amount of change in the focus distance caused by the same rotation angle is. For example, when the second indicator is closer to the first indicator, the amount of change in the focus distance caused by the same angle of rotation of the focus ring is smaller.

It is understood that the amount of change in the focus distance caused by the same amount of adjustment of the focus adjustment assembly, e.g., the same angle of rotation of the focus ring, may be referred to as the rate of change in the focus distance.

In some embodiments, the rate of change of the focus distance gradually increases as the second indicator gradually approaches the first indicator.

In some other embodiments, when the indication distance between the first indication mark and the second indication mark is within different preset ranges, the change rates of the focus distances are different, and the preset ranges and the change rates of the focus distances are in one-to-one correspondence. As shown in fig. 27, when the second indicator 1106 is located between position 1 and position 2, the rate of change of the focal distance is denoted as T1; when the second indicator 1106 is located between position 2 and position 3, the rate of change of the focus distance is denoted as T2; when the second indicator 1106 is located between position 3 and position 4, the rate of change of the focus distance is denoted as T3; when the second indicator 1106 is located between position 4 and the first indicator 1104, the rate of change of the focus distance is denoted as T4. During the process that the second indicator mark gradually approaches the first indicator mark, T1, T2, T3 and T4 are reduced in sequence.

In the embodiment, the focusing distance changes non-uniformly with the change of the adjustment position of the focusing adjustment assembly, for example, when the second indication mark is closer to the first indication mark, the amount of change of the focusing distance caused by the same adjustment amount of the focusing adjustment assembly is smaller, so that the operation sensitivity of manual focusing can be improved.

The embodiment of the invention provides a manual focusing prompting method. Fig. 28 is a flowchart of a prompting method for manual focusing according to another embodiment of the present invention. As shown in fig. 28, on the basis of the foregoing embodiment, the method in this embodiment may further include:

step S2801 detects whether the photographing apparatus has moved.

Whether the shooting equipment moves or not is detected, and the method comprises the following feasible implementation modes:

one possible implementation is: and detecting whether the shooting equipment moves or not by adopting a motion sensor arranged on the shooting equipment.

Specifically, the photographing apparatus 100 may be provided with a motion sensor including at least one of: a gyroscope, an accelerometer and an inertial measurement unit. Whether the photographing apparatus 100 moves or not can be detected by the motion sensor.

Another possible implementation is: it is detected whether the current image has moved relative to the display assembly.

Specifically, whether the photographing apparatus 100 moves is analyzed according to an image processing method, for example, whether the photographing apparatus 100 moves is determined according to whether an image displayed in a display area of a display component moves with respect to the display area.

When the photographing apparatus is moved, for example, when the photographing apparatus 100 is rotated by a certain angle or translated by a distance, a plurality of focus areas 404 as shown in fig. 4 may no longer overlap with the in-focus object 406, resulting in that the focus parameter peak value is no longer valid. At this time, the user may wish the photographing apparatus to focus on a different target object, or the user may wish to change the composition of the image, but the photographing apparatus is still focused on the same target object. For the former case, the same focus region may be used, but new focus parameter peak values may need to be calculated. For the latter case, a different focus region corresponding to the target object may need to be selected, and a new focus parameter peak value may need to be calculated. Sometimes, when the photographing apparatus 100 moves along the connection line between the photographing apparatus 100 and the target object, a plurality of focus areas 404 as shown in fig. 4 may still overlap with the in-focus object 406, but the distance between the photographing apparatus 100 and the target object is constantly changing, and it is also necessary to recalculate the focus parameter peak values.

Step S2802, if the shooting device moves, stopping displaying the first indicator and/or the second indicator.

If the photographing apparatus 100 has moved, the display of the first indicator may be stopped, and then the display of the first indicator may be resumed after calculating a new focusing parameter peak value according to any one of the methods in step S301 of the above-described embodiments. That is, the first indicator may temporarily disappear until a new focus parameter peak value is calculated. In some embodiments, the second indication flag may also disappear temporarily until a new focus parameter peak value is calculated. Before and after the first indicator mark and/or the second indicator mark temporarily disappear, the indicating distance between the first indicator mark and the second indicator mark may change, and whether the changing is caused depends on whether the new focusing parameter peak value and the previous focusing parameter peak value are consistent before and after the temporary disappearing.

In the embodiment, whether the shooting equipment moves or not is detected, when the shooting equipment moves, the first indication mark and/or the second indication mark are/is stopped to be displayed, after the focusing object is reselected, the focusing parameter peak value is recalculated, and the first indication mark and/or the second indication mark are/is redisplayed, so that the flexibility of focusing prompt is improved.

The embodiment of the invention provides a manual focusing prompting method. Fig. 29 is a flowchart of a prompting method for manual focusing according to another embodiment of the present invention. In this embodiment, the focusing prompting manner is not limited to the manner of displaying the first indicator and the second indicator on the display component as described in the above embodiments, and may also include other prompting manners, which will be described in detail below.

As shown in fig. 29, based on the above embodiment, the performing focus prompting according to the focus parameter peak value and the current focus value in step S303 may include:

and S2901, if the current focusing value is smaller than the focusing parameter peak value, controlling a first light-emitting component in a plurality of light-emitting components on the shooting device to emit light.

In the present embodiment, the photographing apparatus 100 may also be provided with a plurality of light emitting assemblies, for example, the photographing apparatus 100 is provided with 3 light emitting assemblies. The light emitting assembly includes an LED. When the current focusing value is smaller than the focusing parameter peak value, the control device 108 or the control device 116 controls the first light emitting assembly of the plurality of light emitting assemblies to emit light, for example, the left light emitting assembly of the 3 light emitting assemblies to emit light.

And S2902, if the current focusing value is larger than the focusing parameter peak value, controlling a second light-emitting component in a plurality of light-emitting components on the shooting device to emit light.

When the current focus value is greater than the focus parameter peak value, the control device 108 or the control device 116 controls a second light emitting assembly of the plurality of light emitting assemblies to emit light. For example, the right light emitting element of the 3 light emitting elements is controlled to emit light.

And S2903, if the current focusing value is equal to the focusing parameter peak value, controlling a third light-emitting component in a plurality of light-emitting components on the shooting device to emit light.

When the current focus value is equal to the focus parameter peak value, the control device 108 or the control device 116 controls a third light emitting assembly of the plurality of light emitting assemblies to emit light. For example, the middle light emitting assembly of the 3 light emitting assemblies is controlled to emit light.

Alternatively, when the current focusing value is smaller than the focusing parameter peak value, the control device 108 or the control device 116 controls the right light emitting assembly of the 3 light emitting assemblies to emit light. When the current focusing value is larger than the focusing parameter peak value, the control device 108 or the control device 116 controls the light emitting assembly on the left side of the 3 light emitting assemblies to emit light.

Optionally, the third light emitting assembly is located in the middle of the plurality of light emitting assemblies, and the first light emitting assembly and the second light emitting assembly are respectively located at two sides of the third light emitting assembly.

In some embodiments, the number of light emitting components included in the photographing apparatus 100 may be more than 3, and may be more than 3. For example, the photographing apparatus 100 includes a light emitting element a, a light emitting element B, a light emitting element C, a light emitting element D, and a light emitting element E. When the current focusing value is equal to the focusing parameter peak value, the control device 108 or the control device 116 controls the light emitting component C in the middle position to emit light. When the current focusing value is smaller than the focusing parameter peak value, the control device 108 or the control device 116 controls at least one of the light emitting assembly a and the light emitting assembly B on the left side of the light emitting assembly C to emit light. When the current focusing value is larger than the focusing parameter peak value, the control device 108 or the control device 116 lights at least one of the light emitting components D and E on the right side of the light emitting component C. Alternatively, when the current focusing value is greater than the focusing parameter peak value, the control device 108 or the control device 116 controls at least one of the light emitting components a and B on the left side of the light emitting component C to emit light. When the current focusing value is smaller than the focusing parameter peak value, the control device 108 or the control device 116 lights at least one of the light emitting components D and E on the right side of the light emitting component C.

In some further embodiments, the greater the absolute value of the difference between the current focus value and the focus parameter peak value, the greater the distance between the first light emitting assembly and the third light emitting assembly when the current focus value is less than the focus parameter peak value; when the current focus value is greater than the focus parameter peak value, the greater the absolute value of the difference between the current focus value and the focus parameter peak value, the greater the distance between the second light emitting assembly and the third light emitting assembly.

For example, the photographing apparatus 100 may further include a greater number of light emitting components, and the control device 108 or the control device 116 controls the light emitting component at the middle position among the plurality of light emitting components to emit light when the current focus value is equal to the focus parameter peak value. When the current focusing value is smaller than the focusing parameter peak value, the larger the absolute value of the difference between the current focusing value and the focusing parameter peak value is, the light-emitting component on the left side of the middle position and farther from the middle position is controlled to emit light. When the current focusing value is larger than the focusing parameter peak value, the larger the absolute value of the difference between the current focusing value and the focusing parameter peak value is, the light-emitting component on the right side of the middle position and farther from the middle position is controlled to emit light. That is, the magnitude relationship between the current focus value and the focus parameter peak value is reflected by the positional relationship, e.g., left or right, of the light emitting assembly with respect to the middle position, and the difference between the current focus value and the focus parameter peak value is reflected by the distance of the light emitting assembly from the middle position. In other embodiments, the difference between the current focus value and the focus parameter peak value may also be reflected by the number of light emitting assemblies that emit light, for example, when the current focus value is smaller than the focus parameter peak value, the greater the absolute value of the difference between the current focus value and the focus parameter peak value, the more light emitting assemblies to the left of the middle position are controlled to emit light; when the current focusing value is larger than the focusing parameter peak value, the larger the absolute value of the difference between the current focusing value and the focusing parameter peak value is, the more light-emitting components on the right side of the middle position are controlled to emit light.

In addition, the light emitting element is not limited to the LED, and may be a light emitting region on the display element 105 or the display element 113.

In other embodiments, the step S103 of performing focus prompting according to the focus parameter peak value and the current focus value may include: identifying a difference between the focus parameter peak value and the current focus value by displaying a numerical value on a display component.

Optionally, the identifying a difference between the focus parameter peak value and the current focus value by displaying a numerical value on a display component comprises: displaying a negative number on a display component if the current focus value is less than the focus parameter peak value, the absolute value of the negative number representing the absolute value of the difference between the current focus value and the focus parameter peak value; displaying a positive number on a display component if the current focus value is greater than the focus parameter peak value, the positive number representing an absolute value of a difference between the current focus value and the focus parameter peak value; displaying 0 on a display component if the current focus value is equal to the focus parameter peak value.

Alternatively, the absolute value of the numerical value is used to indicate the angle that the focus ring needs to be rotated.

In other embodiments, the step S103 of performing focus prompting according to the focus parameter peak value and the current focus value may include: and sending an audio signal by controlling a sound production component of the shooting device to identify the difference between the focusing parameter peak value and the current focusing value.

The emitting an audio signal to identify a difference between the focus parameter peak value and the current focus value by controlling a sound emitting component of a photographing apparatus includes: if the current focusing value is smaller than the focusing parameter peak value, controlling a sound production assembly of the shooting device to emit a first audio signal, wherein optionally the first audio signal comprises a negative number, and the absolute value of the negative number represents the absolute value of the difference between the current focusing value and the focusing parameter peak value; if the current focusing value is larger than the focusing parameter peak value, controlling a sound production assembly of the shooting device to emit a second audio signal, wherein optionally the second audio signal comprises a positive number, and the positive number represents the absolute value of the difference between the current focusing value and the focusing parameter peak value; and if the current focusing value is equal to the focusing parameter peak value, controlling a sound production assembly of the shooting device to produce a third audio signal or not to produce sound, wherein optionally the third audio signal comprises 0.

Optionally, when the current focus value is smaller than the focus parameter peak value, the smaller the absolute value of the difference between the current focus value and the focus parameter peak value is, the larger the volume and/or the repetition frequency of the first audio signal is; when the current focus value is greater than the focus parameter peak value, the smaller the absolute value of the difference between the current focus value and the focus parameter peak value, the larger the volume and/or repetition frequency of the second audio signal.

Optionally, the absolute value of the negative number and/or the positive number represents the angle that the focus ring needs to be rotated.

In other embodiments, the step S103 of performing focus prompting according to the focus parameter peak value and the current focus value may include: identifying a difference between the focus parameter peak value and the current focus value by controlling a shock component of a capture device.

Optionally, the identifying a difference between the focus parameter peak value and the current focus value by controlling a vibration component of the photographing apparatus includes: if the focusing parameter peak value is not equal to the current focusing value, controlling a vibration component of the shooting equipment to vibrate; and if the focusing parameter peak value is equal to the current focusing value, controlling a vibration component of the shooting equipment not to vibrate.

Optionally, the vibration frequency of the vibration assembly is related to the difference between the current focus value and the focus parameter peak value; or/and the vibration intensity of the vibration component is related to the difference value between the current focusing value and the focusing parameter peak value.

Optionally, the smaller the absolute value of the difference between the current focus value and the focus parameter peak value is, the larger the vibration frequency and/or vibration intensity of the vibration assembly is.

Or the larger the absolute value of the difference value between the current focusing value and the focusing parameter peak value is, the larger the vibration frequency and/or vibration intensity of the vibration component is.

The embodiment carries out focusing prompt in modes of emitting light through the light emitting assembly, displaying numerical values on the display assembly, emitting audio signals through the sound emitting assembly, vibrating the assembly and the like, and improves the flexibility of focusing prompt through various focusing prompt modes.

The embodiment of the invention provides a control device. Fig. 30 is a structural diagram of a control device according to an embodiment of the present invention, and as shown in fig. 30, the control device 300 includes: a memory 301 and a processor 302. The control device 300 may specifically be the control device 108 or the control device 116 in the above-described embodiment, the memory 301 may specifically be the memory 1082 or the memory 1162 in the above-described embodiment, and the processor 302 may specifically be the processor 1084 or the processor 1164 in the above-described embodiment.

The memory 301 is used for storing program codes; the processor 302 calls the program code, and when the program code is executed, performs the following: calculating a focusing parameter peak value of a focusing object in a current image when focusing; calculating a current focusing value corresponding to the current adjusting position of the focusing adjusting assembly; and performing focusing prompt according to the focusing parameter peak value and the current focusing value, and prompting a user to operate the focusing adjusting component so as to enable the focusing parameter peak value to be consistent with the current focusing value.

Optionally, when the processor 302 calculates a focusing parameter peak value of a focusing object in the current image during focusing, it is specifically configured to: carrying out image analysis on the current image to obtain a focusing evaluation function; and calculating the focusing parameter peak value of the focusing object in the current image when focusing according to the focusing evaluation function.

Optionally, the processor 302 is configured to, when performing image analysis on the current image to obtain a focus evaluation function, specifically: and carrying out image analysis on the current image in a frequency domain to obtain a focusing evaluation function.

Optionally, when the processor 302 performs image analysis on the current image in the frequency domain, the processor is specifically configured to: and performing image analysis on the current image based on discrete wavelet transform.

Optionally, when the processor 302 performs image analysis on the current image in the frequency domain, the processor is specifically configured to: and performing image analysis on the current image based on discrete cosine transform.

Optionally, the processor 302 is configured to, when performing image analysis on the current image to obtain a focus evaluation function, specifically: and carrying out image analysis on the current image to obtain the information entropy of the current image, and taking the information entropy as a focusing evaluation function.

Optionally, the processor 302 is configured to, when performing image analysis on the current image to obtain a focus evaluation function, specifically: and carrying out differential operation on the current image to obtain a gray level difference value of the current image, and taking the gray level difference value of the current image as a focusing evaluation function.

Optionally, the processor 302 is further configured to: and receiving a selection instruction of a focusing object in the current image.

Optionally, when the processor 302 receives a selection instruction for a focusing object in the current image, the processor is specifically configured to: and receiving a selection instruction of an focusing point on the focusing object in the current image.

Optionally, the current image is displayed on a touch screen; when the processor 302 receives a selection instruction for a focusing object in the current image, it is specifically configured to: and detecting a touch operation on a focusing object displayed on the touch screen.

The specific principle and implementation of the control device provided by the embodiment of the present invention are similar to those of the embodiment shown in fig. 3, and are not described herein again.

The embodiment of the invention provides a control device. On the basis of the technical solution provided in the embodiment shown in fig. 30, optionally, when the processor 302 performs the focus prompt according to the focus parameter peak value and the current focus value, the processor is specifically configured to: displaying a first indicator on a display component, the first indicator for indicating the focus parameter peak value; displaying a second indicator on the display component, the second indicator for indicating the current focus value; wherein an indicated distance between the first indicator and the second indicator is related to a difference between the focus parameter peak value and the current focus value.

Optionally, when the processor 302 displays the first indicator on the display component, the processor is specifically configured to: displaying a first indicator in a preset area of a display assembly; correspondingly, when the processor 302 displays the second indicator on the display component, it is specifically configured to: if the current focusing value is smaller than the focusing parameter peak value, displaying the second indication mark on the first side of the preset area; if the current focusing value is larger than the focusing parameter peak value, displaying the second indication mark on a second side of the preset area, wherein the second side is opposite to the first side; displaying the second indicator in the preset area if the current focus value is equal to the focus parameter peak value, the second indicator overlapping with the first indicator.

Optionally, the preset area includes the focusing object.

Optionally, the preset area includes a target indication frame, and the target indication frame is used for indicating an object selected for focusing.

Optionally, when the processor 302 displays the first indicator on the display component, the processor is specifically configured to: displaying the first indicator mark on a scale image displayed on a display assembly; when the processor 302 displays the second indicator on the display component, it is specifically configured to: displaying the second indication mark on a scale image displayed on a display component; wherein the first indication mark is located at a fixed position on the scale image, and the second indication mark moves on the scale image along with the change of the adjustment position of the focusing adjustment component.

Optionally, when the processor 302 displays the first indicator on the scale image displayed on the display assembly, the processor is specifically configured to: displaying a first indication mark at a middle position of a scale image displayed on the display assembly; correspondingly, when the processor 302 displays the second indicator on the scale image displayed on the display component, it is specifically configured to: displaying the second indication mark on the scale image on a first side of the intermediate position if the current focus value is less than the focus parameter peak value; displaying the second indication mark on a second side of the intermediate position on the scale image if the current focus value is greater than the focus parameter peak value, the second side being opposite to the first side; displaying the second indication mark at the intermediate position if the current focus value is equal to the focus parameter peak value.

Optionally, the scale image comprises a scale curve.

Optionally, the calibration curve is a semicircular arc.

Optionally, the scale image comprises a scale straight line.

Optionally, the processor 302 displays a first indicator on the display component, where the first indicator is specifically configured to, when the first indicator is used to indicate the focusing parameter peak value: displaying a first frame on a display component, the first frame indicating the focus parameter peak values; the processor 302 displays a second indication mark on the display component, where the second indication mark is used to indicate the current focus value, and specifically used to: displaying a second border on the display component, the second border indicating the current focus value; wherein a center of the second bezel overlaps a center of the first bezel.

Optionally, when the processor 302 displays the second frame on the display assembly, the processor is specifically configured to: if the current focusing value is smaller than the focusing parameter peak value, displaying the second frame inside the first frame; displaying the second frame outside the first frame if the current focusing value is greater than the focusing parameter peak value; overlaying the second bezel display on the first bezel if the current focus value is equal to the focus parameter peak value.

Optionally, when the processor 302 displays the second frame on the display assembly, the processor is specifically configured to: if the current focusing value is larger than the focusing parameter peak value, displaying the second frame inside the first frame; displaying the second frame outside the first frame if the current focus value is less than the focus parameter peak value; overlaying the second bezel display on the first bezel if the current focus value is equal to the focus parameter peak value.

Optionally, the first border is a target indication frame, and the target indication frame is used for indicating an object selected for focusing.

Optionally, after the preset time for completing focusing, the second frame disappears.

Optionally, the processor 302 displays a first frame on the display component, where the first frame is specifically configured to, when the first frame is used to indicate the focusing parameter peak value: displaying a first ring on a display assembly, the first ring indicating the focus parameter peak values; the processor 302 displays a second frame on the display component, where the second frame is specifically configured to, when indicating the current focus value: displaying a second ring on a display component, the second ring to indicate the current focus value; wherein the second ring and the first ring are concentric circles.

Optionally, when the processor 302 displays the second ring on the display component, it is specifically configured to: displaying the second ring inside the first ring if the current focus value is less than the focus parameter peak value; displaying the second ring outside the first ring if the current focus value is greater than the focus parameter peak value; displaying the second ring overlaid on the first ring if the current focus value is equal to the focus parameter peak value.

Optionally, when the processor 302 displays the second ring on the display component, it is specifically configured to: displaying the second ring inside the first ring if the current focus value is greater than the focus parameter peak value; displaying the second ring outside the first ring if the current focus value is less than the focus parameter peak value; displaying the second ring overlaid on the first ring if the current focus value is equal to the focus parameter peak value.

Optionally, the first ring is a target indication frame, and the target indication frame is used for indicating an object selected for focusing.

Optionally, after a preset time for focusing completion, the second ring disappears.

Optionally, the processor 302 displays a first indicator on the display component, where the first indicator is specifically configured to, when the first indicator is used to indicate the focusing parameter peak value: displaying a line segment on a display component, the line segment being used to indicate the focus parameter peak value; the processor 302 displays a second indication mark on the display component, where the second indication mark is used to indicate the current focus value, and specifically used to: displaying a semicircle on a display assembly, the semicircle being used to indicate the current focus value; the center of the line segment is overlapped with the circle center of the semicircle, and the indicating distance between the first indicating mark and the second indicating mark comprises the diameter of the bottom of the semicircle and the included angle between the line segments.

Optionally, if the current focus value is smaller than the focus parameter peak value, an included angle between the diameter of the bottom of the semicircle and the line segment is formed by counterclockwise rotation of the semicircle with the circle center as a rotation center; if the current focusing value is larger than the focusing parameter peak value, an included angle between the diameter of the bottom of the semicircle and the line segment is formed by clockwise rotation of the semicircle by taking the circle center as a rotation center; the diameter of the bottom of the semicircle overlaps the line segment if the current focus value is equal to the focus parameter peak value.

Optionally, if the current focus value is greater than the focus parameter peak value, an included angle between the diameter of the bottom of the semicircle and the line segment is formed by counterclockwise rotation of the semicircle with the circle center as a rotation center; if the current focusing value is smaller than the focusing parameter peak value, an included angle between the diameter of the bottom of the semicircle and the line segment is formed by clockwise rotation of the semicircle by taking the circle center as a rotation center; the diameter of the bottom of the semicircle overlaps the line segment if the current focus value is equal to the focus parameter peak value.

Optionally, the line segment and the semicircle are located in a target indicating ring, and the target indicating ring is used for indicating an object selected for focusing.

Optionally, the radius of the target indicating ring is greater than or equal to the radius of the semicircle.

Optionally, the processor 302 displays a first indicator on the display component, where the first indicator is specifically configured to, when the first indicator is used to indicate the focusing parameter peak value: displaying a first line segment on a display component, the first line segment indicating the focus parameter peak value; the processor 302 displays a second indication mark on the display component, where the second indication mark is used to indicate the current focus value, and specifically used to: displaying a second line segment on a display assembly, the second line segment indicating the current focus value; wherein the center of the first line segment overlaps the center of the second line segment, and the indication distance between the first indicator mark and the second indicator mark comprises the included angle between the first line segment and the second line segment.

Optionally, if the current focus value is smaller than the focus parameter peak value, an included angle between the first line segment and the second line segment is formed by counterclockwise rotation of the second line segment with its center as a rotation center; if the current focusing value is larger than the focusing parameter peak value, an included angle between the first line segment and the second line segment is formed by clockwise rotation of the second line segment by taking the center of the second line segment as a rotation center; the first line segment and the second line segment overlap if the current focus value is equal to the focus parameter peak value.

Optionally, if the current focus value is greater than the focus parameter peak value, an included angle between the first line segment and the second line segment is formed by counterclockwise rotation of the second line segment with its center as a rotation center; if the current focusing value is smaller than the focusing parameter peak value, an included angle between the first line segment and the second line segment is formed by clockwise rotation of the second line segment by taking the center of the second line segment as a rotation center; the first line segment and the second line segment overlap if the current focus value is equal to the focus parameter peak value.

The specific principle and implementation of the control device provided by the embodiment of the present invention are similar to those of the embodiments shown in fig. 5 to 25, and are not described herein again.

The embodiment of the invention provides a control device. On the basis of the technical solution provided by the embodiment shown in fig. 30, optionally, the display component includes a screen; the processor 302 is further configured to: displaying the current image on the screen, wherein the first indicator and the second indicator are overlaid on the current image.

Optionally, the processor 302 is further configured to: and displaying a target indication frame for prompting a focusing object on the display component.

Optionally, the target indication box includes a target prompt ring.

Optionally, at least one of the first indicator and the second indicator is displayed outside the target indication frame at a position within a preset distance range from the target indication frame.

Optionally, at least one of the first indicator and the second indicator is displayed within the target indication frame.

Optionally, at least one of the first indicator and the second indicator is displayed on the target indication frame.

Optionally, after a preset time for focusing completion, the target indication frame disappears.

The specific principle and implementation of the control device provided by the embodiment of the present invention are similar to those of the embodiment shown in fig. 26, and are not described herein again.

The embodiment of the invention provides a control device. Based on the technical solution provided by the embodiment shown in fig. 30, optionally, the indication distance between the first indication mark and the second indication mark is proportional to the difference between the focus parameter peak value and the current focus value.

Optionally, the processor 302 is further configured to: and updating the current focusing value according to the change of the adjustment position of the focusing adjustment assembly.

Optionally, the indication distance between the first indication mark and the second indication mark changes uniformly with the change of the adjustment position of the focus adjustment assembly.

Optionally, the indication distance between the first indication mark and the second indication mark changes with the adjustment position of the focus adjustment assembly instead of uniformly changing.

Optionally, when the processor 302 updates the current focus value according to the change of the adjustment position of the focus adjustment assembly, the processor is specifically configured to: and updating the current focusing value according to the rotation angle of the focusing ring.

Optionally, the indication distance between the first indication mark and the second indication mark is uniformly changed with the rotation angle of the focus ring.

Optionally, the indication distance between the first indication mark and the second indication mark varies non-uniformly with the rotation angle of the focus ring.

Optionally, the rate of change of the indicated distance between the first indicator and the second indicator increases as the indicated distance decreases.

Optionally, when the indication distance between the first indication mark and the second indication mark is within different preset ranges, the change rates of the indication distance are different, and the preset ranges correspond to the change rates of the indication distance one to one.

Optionally, the rate of change of the indication distance between the first indication mark and the second indication mark includes an amount of change of the indication distance between the first indication mark and the second indication mark when the focus ring rotates by a unit angle.

Optionally, the focus distance is uniformly changed with the change of the adjustment position of the focus adjustment assembly.

Optionally, the focus distance varies non-uniformly with the adjustment position of the focus adjustment assembly.

Optionally, the smaller the difference between the focus parameter peak value and the current focus value is, the smaller the variation of the focus distance caused by the same variation of the adjustment position is.

Alternatively, the focus distance is uniformly changed with the rotation angle of the focus ring.

Optionally, the focus distance varies non-uniformly with the rotation angle of the focus ring.

Optionally, the smaller the difference between the focus parameter peak value and the current focus value is, the smaller the amount of change in the focus distance caused by the same rotation angle is.

The specific principle and implementation of the control device provided by the embodiment of the present invention are similar to those of the embodiment shown in fig. 27, and are not described herein again.

The present embodiment can improve the display sensitivity of the focusing indication by the indicating distance between the first indicating mark and the second indicating mark non-uniformly changing with the adjustment amount of the focusing adjustment assembly, for example, when the second indicating mark is closer to the first indicating mark, the amount of change of the indicating distance caused by the same adjustment amount of the focusing adjustment assembly is larger, that is, when the second indicating mark is close to the first indicating mark, a slight adjustment of the focusing adjustment assembly by a user, for example, rotating the focusing ring by a relatively small angle, will cause a relatively large change of the indicating distance displayed on the display assembly, so that the user can clearly observe the change of the focusing position, thereby improving the accuracy of manual focusing. The operation sensitivity of manual focusing can be improved by the non-uniform change of the focusing distance along with the change of the adjustment position of the focusing adjustment component, for example, when the second indication mark is closer to the first indication mark, the change amount of the focusing distance caused by the same adjustment amount of the focusing adjustment component is smaller, that is, when the second indication mark is closer to the first indication mark, in order to make the focusing distance have the same change, the user needs to increase the adjustment amount of the focusing adjustment component, so that the user can adjust the focusing distance more finely, and the accuracy of manual focusing is improved.

The embodiment of the invention provides a control device. Based on the technical solution provided by the embodiment shown in fig. 30, optionally, the processor 302 is further configured to: detecting whether the shooting equipment moves; and if the shooting equipment moves, stopping displaying the first indicator mark and/or the second indicator mark.

Optionally, when the processor 302 detects whether the shooting device moves, the processor is specifically configured to: and detecting whether the shooting equipment moves or not by adopting a motion sensor arranged on the shooting equipment.

Optionally, the motion sensor includes at least one of: a gyroscope, an accelerometer and an inertial measurement unit.

Optionally, when the processor 302 detects whether the shooting device moves, the processor is specifically configured to: it is detected whether the current image has moved relative to the display assembly.

The specific principle and implementation of the control device provided by the embodiment of the present invention are similar to those of the embodiment shown in fig. 28, and are not described herein again.

The embodiment of the invention provides a control device. On the basis of the technical solution provided in the embodiment shown in fig. 30, optionally, when the processor 302 performs the focus prompt according to the focus parameter peak value and the current focus value, the processor is specifically configured to: if the current focusing value is smaller than the focusing parameter peak value, controlling a first light-emitting assembly in a plurality of light-emitting assemblies on the shooting equipment to emit light; if the current focusing value is larger than the focusing parameter peak value, controlling a second light-emitting assembly in a plurality of light-emitting assemblies on the shooting equipment to emit light; and controlling a third light-emitting component in the plurality of light-emitting components on the shooting device to emit light if the current focusing value is equal to the focusing parameter peak value.

Optionally, when the current focusing value is smaller than the focusing parameter peak value, the larger the absolute value of the difference between the current focusing value and the focusing parameter peak value is, the farther the distance between the first light emitting assembly and the third light emitting assembly is; when the current focus value is greater than the focus parameter peak value, the greater the absolute value of the difference between the current focus value and the focus parameter peak value, the greater the distance between the second light emitting assembly and the third light emitting assembly.

Optionally, the light emitting assembly comprises an LED.

Optionally, when the processor 302 performs the focusing prompt according to the focusing parameter peak value and the current focusing value, the processor is specifically configured to: identifying a difference between the focus parameter peak value and the current focus value by displaying a numerical value on a display component.

Optionally, the processor 302 is specifically configured to, when displaying a numerical value on the display component to identify a difference between the focus parameter peak value and the current focus value: displaying a negative number on a display component if the current focus value is less than the focus parameter peak value, the absolute value of the negative number representing the absolute value of the difference between the current focus value and the focus parameter peak value; displaying a positive number on a display component if the current focus value is greater than the focus parameter peak value, the positive number representing an absolute value of a difference between the current focus value and the focus parameter peak value; displaying 0 on a display component if the current focus value is equal to the focus parameter peak value.

Optionally, when the processor 302 performs the focusing prompt according to the focusing parameter peak value and the current focusing value, the processor is specifically configured to: and sending an audio signal by controlling a sound production component of the shooting device to identify the difference between the focusing parameter peak value and the current focusing value.

Optionally, when the processor 302 controls the sound emitting component of the shooting device to emit an audio signal to identify the difference between the focus parameter peak value and the current focus value, the processor is specifically configured to: if the current focusing value is smaller than the focusing parameter peak value, controlling a sound production assembly of the shooting equipment to send out a first audio signal; if the current focusing value is larger than the focusing parameter peak value, controlling a sound production assembly of the shooting equipment to send out a second audio signal; and if the current focusing value is equal to the focusing parameter peak value, controlling a sound production assembly of the shooting equipment to produce a third audio signal or not to produce sound.

Optionally, the first audio signal comprises a negative number, the absolute value of the negative number representing the absolute value of the difference between the current focus value and the focus parameter peak value; the second audio signal comprises a positive number representing an absolute value of a difference between the current focus value and the focus parameter peak value; the third audio signal includes 0.

Optionally, when the processor 302 performs the focusing prompt according to the focusing parameter peak value and the current focusing value, the processor is specifically configured to: identifying a difference between the focus parameter peak value and the current focus value by controlling a shock component of a capture device.

Optionally, when the processor 302 controls the vibration component of the shooting device to identify the difference between the focus parameter peak value and the current focus value, the processor is specifically configured to: if the focusing parameter peak value is not equal to the current focusing value, controlling a vibration component of the shooting equipment to vibrate; and if the focusing parameter peak value is equal to the current focusing value, controlling a vibration component of the shooting equipment not to vibrate.

Optionally, the larger the absolute value of the difference between the current focus value and the focus parameter peak value is, the larger the vibration frequency and/or vibration intensity of the vibration assembly is.

The specific principle and implementation of the control device provided by the embodiment of the present invention are similar to those of the embodiment shown in fig. 29, and are not described herein again.

The embodiment of the invention provides shooting equipment. As shown in fig. 1, the photographing apparatus 100 includes a body 104; an optical assembly 102 mounted on the body for collecting image information; a focus adjustment assembly 106 connected to the optical assembly 102 for adjusting the focal length of the optical assembly; and a control device 108, and the specific principle and implementation of the control device 108 are the same as those of the control device 300 described in fig. 30, and are not described herein again.

The embodiment of the invention provides a shooting system. The shooting system may specifically be the remote controller 110 as shown in fig. 2, and the remote controller 110 includes: a body; an antenna 112 installed at the body for communicating with a photographing apparatus; a focus adjustment assembly 114 mounted on the body for adjusting a focal length of an optical assembly of the photographing apparatus; and a control device 116. The specific principle and implementation of the control device 116 are the same as those of the control device 300 described in fig. 30, and are not described herein again.

In the embodiments provided in the present invention, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.

The integrated unit implemented in the form of a software functional unit may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium and includes several instructions to enable a computer device (which may be a personal computer, a server, or a network device) or a processor (processor) to execute some steps of the methods according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

It is obvious to those skilled in the art that, for convenience and simplicity of description, the foregoing division of the functional modules is merely used as an example, and in practical applications, the above function distribution may be performed by different functional modules according to needs, that is, the internal structure of the device is divided into different functional modules to perform all or part of the above described functions. For the specific working process of the device described above, reference may be made to the corresponding process in the foregoing method embodiment, which is not described herein again.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A manual focusing prompting method is characterized by comprising the following steps:

performing focusing prompt according to the focusing parameter peak value and the current focusing value, and prompting a user to operate the focusing adjusting component so as to enable the focusing parameter peak value to be consistent with the current focusing value;

wherein the performing a focus prompt according to the focus parameter peak value and the current focus value comprises:

displaying a first indicator on a display component, the first indicator for indicating the focus parameter peak value;

displaying a second indicator on the display component, the second indicator for indicating the current focus value;

a rate of change of the indicated distance between the first indicator and the second indicator increases as the indicated distance decreases;

the change rate of the indicated distance is the amount of change in the indicated distance caused by the same adjustment amount of the focus adjustment assembly.

2. The method of claim 1, wherein the focus adjustment assembly comprises at least one of:

focusing ring, adjustment button, adjusting wheel.

3. The method of claim 1, wherein an indicated distance between the first indicator and the second indicator is related to a difference between the focus parameter peak value and the current focus value.

4. The method of claim 3, wherein displaying the first indicator on the display assembly comprises:

displaying a first indicator in a preset area of a display assembly;

correspondingly, the displaying a second indicator on the display component comprises:

if the current focusing value is smaller than the focusing parameter peak value, displaying the second indication mark on the first side of the preset area;

if the current focusing value is larger than the focusing parameter peak value, displaying the second indication mark on a second side of the preset area, wherein the second side is opposite to the first side;

displaying the second indicator in the preset area if the current focus value is equal to the focus parameter peak value, the second indicator overlapping with the first indicator.

5. The method of claim 4, wherein the preset area comprises the focusing object.

6. The method according to claim 4 or 5, wherein the preset area comprises a target indication frame for indicating an object selected for focusing.

7. The method of claim 3, wherein displaying the first indicator on the display assembly comprises:

displaying the first indicator mark on a scale image displayed on a display assembly;

the displaying a second indicator on the display assembly includes:

displaying the second indication mark on a scale image displayed on a display component;

wherein the first indication mark is located at a fixed position on the scale image, and the second indication mark moves on the scale image along with the change of the adjustment position of the focusing adjustment component.

8. The method of claim 7, wherein displaying the first indicator on a scale image displayed on a display assembly comprises:

displaying a first indication mark at a middle position of a scale image displayed on the display assembly;

correspondingly, the displaying the second indication mark on the scale image displayed on the display component comprises:

displaying the second indication mark on the scale image on a first side of the intermediate position if the current focus value is less than the focus parameter peak value;

displaying the second indication mark on a second side of the intermediate position on the scale image if the current focus value is greater than the focus parameter peak value, the second side being opposite to the first side;

displaying the second indication mark at the intermediate position if the current focus value is equal to the focus parameter peak value.

9. The method of claim 7 or 8, wherein the scale image comprises a scale curve.

10. The method of claim 9, wherein the calibration curve is a semicircular arc.

11. The method of claim 7 or 8, wherein the scale image comprises a scale line.

12. The method according to claim 8, wherein the middle position of the scale image is located in a preset area of the display component, the preset area comprises a target indication frame, and the target indication frame is used for indicating an object for selecting focusing.

13. The method of claim 3, wherein displaying a first indicator on a display component, the first indicator for indicating the focus parameter peak value, comprises:

displaying a first frame on a display component, the first frame indicating the focus parameter peak values;

the displaying a second indicator on the display component, the second indicator for indicating the current focus value, comprising:

displaying a second border on the display component, the second border indicating the current focus value;

wherein a center of the second bezel overlaps a center of the first bezel.

14. The method of claim 13, wherein the size of the first frame is constant and the size of the second frame varies with the adjusted position of the focus adjustment assembly.

15. The method of claim 13 or 14, wherein displaying the second bezel on the display component comprises:

if the current focusing value is smaller than the focusing parameter peak value, displaying the second frame inside the first frame;

displaying the second frame outside the first frame if the current focusing value is greater than the focusing parameter peak value;

overlaying the second bezel display on the first bezel if the current focus value is equal to the focus parameter peak value.

16. The method of claim 13 or 14, wherein displaying the second bezel on the display component comprises:

if the current focusing value is larger than the focusing parameter peak value, displaying the second frame inside the first frame;

displaying the second frame outside the first frame if the current focus value is less than the focus parameter peak value;

17. The method according to claim 13 or 14, wherein the first frame is a target indication frame, and the target indication frame is used for indicating an object selected for focusing.

18. The method according to claim 13 or 14, wherein the second frame disappears after a preset time for focusing completion.

19. The method of claim 13, wherein displaying a first frame on a display component, the first frame indicating the focus parameter peak value, comprises:

displaying a first ring on a display assembly, the first ring indicating the focus parameter peak values;

the displaying a second bezel on the display component, the second bezel to indicate the current focus value, comprising:

displaying a second ring on a display component, the second ring to indicate the current focus value;

wherein the second ring and the first ring are concentric circles.

20. The method of claim 19, wherein the first ring is of a constant size and the second ring is of a size that varies with the adjusted position of the focus adjustment assembly.

21. The method of claim 19 or 20, wherein displaying the second ring on the display assembly comprises:

displaying the second ring inside the first ring if the current focus value is less than the focus parameter peak value;

displaying the second ring outside the first ring if the current focus value is greater than the focus parameter peak value;

displaying the second ring overlaid on the first ring if the current focus value is equal to the focus parameter peak value.

22. The method of claim 19 or 20, wherein displaying the second ring on the display assembly comprises:

displaying the second ring inside the first ring if the current focus value is greater than the focus parameter peak value;

displaying the second ring outside the first ring if the current focus value is less than the focus parameter peak value;

23. The method according to claim 19 or 20, wherein the first ring is a target indication frame for indicating an object selected for focusing.

24. The method according to claim 19 or 20, wherein the second ring disappears after a preset time for focusing to be completed.

25. The method of claim 3, wherein displaying a first indicator on a display component, the first indicator for indicating the focus parameter peak value, comprises:

displaying a line segment on a display component, the line segment being used to indicate the focus parameter peak value;

displaying a semicircle on a display assembly, the semicircle being used to indicate the current focus value;

the center of the line segment is overlapped with the circle center of the semicircle, and the indicating distance between the first indicating mark and the second indicating mark comprises the diameter of the bottom of the semicircle and the included angle between the line segments.

26. The method of claim 25, wherein the position of the line segment is unchanged;

when the adjusting position of the focusing adjusting component is changed, the semicircle rotates by taking the circle center as the rotation center.

27. The method of claim 25 or 26,

if the current focusing value is smaller than the focusing parameter peak value, an included angle between the diameter of the bottom of the semicircle and the line segment is formed by anticlockwise rotation of the semicircle by taking the circle center as a rotation center;

if the current focusing value is larger than the focusing parameter peak value, an included angle between the diameter of the bottom of the semicircle and the line segment is formed by clockwise rotation of the semicircle by taking the circle center as a rotation center;

the diameter of the bottom of the semicircle overlaps the line segment if the current focus value is equal to the focus parameter peak value.

28. The method of claim 25 or 26,

if the current focusing value is larger than the focusing parameter peak value, an included angle between the diameter of the bottom of the semicircle and the line segment is formed by anticlockwise rotation of the semicircle by taking the circle center as a rotation center;

if the current focusing value is smaller than the focusing parameter peak value, an included angle between the diameter of the bottom of the semicircle and the line segment is formed by clockwise rotation of the semicircle by taking the circle center as a rotation center;

29. The method of claim 25 or 26, wherein the line segment and the semi-circle are located within a target indication ring, the target indication ring being used to indicate an object selected for focusing.

30. The method of claim 29, wherein the radius of the target indicator ring is greater than or equal to the radius of the semicircle.

31. The method of claim 3, wherein displaying a first indicator on a display component, the first indicator for indicating the focus parameter peak value, comprises:

displaying a first line segment on a display component, the first line segment indicating the focus parameter peak value;

displaying a second line segment on a display assembly, the second line segment indicating the current focus value;

wherein the center of the first line segment overlaps the center of the second line segment, and the indication distance between the first indicator mark and the second indicator mark comprises the included angle between the first line segment and the second line segment.

32. The method of claim 31, wherein the position of the first line segment is unchanged;

when the adjustment position of the focusing adjustment component is changed, the second line segment rotates by taking the center of the second line segment as a rotation center.

33. The method of claim 31 or 32,

if the current focusing value is smaller than the focusing parameter peak value, an included angle between the first line segment and the second line segment is formed by anticlockwise rotation of the second line segment by taking the center of the second line segment as a rotation center;

if the current focusing value is larger than the focusing parameter peak value, an included angle between the first line segment and the second line segment is formed by clockwise rotation of the second line segment by taking the center of the second line segment as a rotation center;

the first line segment and the second line segment overlap if the current focus value is equal to the focus parameter peak value.

34. The method of claim 31 or 32,

if the current focusing value is larger than the focusing parameter peak value, an included angle between the first line segment and the second line segment is formed by the second line segment rotating anticlockwise by taking the center of the second line segment as a rotation center;

if the current focusing value is smaller than the focusing parameter peak value, an included angle between the first line segment and the second line segment is formed by clockwise rotation of the second line segment by taking the center of the second line segment as a rotation center;

35. The method of claim 31 or 32, wherein the first line segment and the second line segment are located within a target indication ring, the target indication ring being used to indicate an object selected for focusing.

36. The method of claim 35, wherein the diameter of the target indicator ring is greater than or equal to the length of the first line segment; or

The diameter of the target indicating ring is greater than or equal to the length of the second line segment.

37. The method of claim 3, wherein the display component comprises a screen;

the method further comprises the following steps:

displaying the current image on the screen, wherein the first indicator and the second indicator are overlaid on the current image.

38. The method of claim 3, further comprising:

and displaying a target indication frame for prompting a focusing object on the display component.

39. The method of claim 38, wherein the target indication box comprises a target hint ring.

40. The method of claim 38 or 39, wherein at least one of the first indicator and the second indicator is displayed outside the target indicator frame at a position within a preset distance range from the target indicator frame.

41. The method of claim 38 or 39, wherein at least one of the first indicator and the second indicator is displayed within the target indicator box.

42. The method of claim 38 or 39, wherein at least one of the first indicator and the second indicator is displayed on the target indicator frame.

43. The method of claim 39, wherein the target indication frame disappears after a preset time for focusing to be completed.

44. The method according to claim 3, wherein the first indicator mark and/or the second indicator mark disappear after a preset time of focusing completion.

45. The method of claim 3, wherein an indicated distance between the first indicator and the second indicator is proportional to a difference between the focus parameter peak value and the current focus value.

46. The method of claim 3, further comprising:

and updating the current focusing value according to the change of the adjustment position of the focusing adjustment assembly.

47. The method of claim 46, wherein the indicated distance between the first indicator mark and the second indicator mark varies non-uniformly with the adjusted position of the focus adjustment assembly.

48. The method of claim 46, wherein updating the current focus value in accordance with the change in the adjusted position of the focus adjustment assembly comprises:

and updating the current focusing value according to the rotation angle of the focusing ring.

49. The method of claim 48, wherein the indicated distance between the first indicator mark and the second indicator mark varies non-uniformly with the angle of rotation of the focus ring.

50. The method according to claim 49, wherein when the indication distance between the first indication mark and the second indication mark is in different preset ranges, the change rates of the indication distance are different, and the preset ranges and the change rates of the indication distance are in one-to-one correspondence.

51. The method according to claim 49 or 50, wherein the rate of change of the indicated distance between the first indicator and the second indicator comprises an amount of change of the indicated distance between the first indicator and the second indicator when the focus ring is rotated by a unit angle.

52. The method of claim 1, wherein the focus distance varies uniformly as the adjusted position of the focus adjustment assembly varies.

53. The method of claim 1, wherein the focus distance varies non-uniformly with changes in the adjusted position of the focus adjustment assembly.

54. The method of claim 53, wherein the smaller the difference between the focus parameter peak value and the current focus value, the smaller the amount of change in focus distance caused by the same amount of change in adjustment position.

55. The method of claim 52, wherein the focus distance varies uniformly with the angle of rotation of the focus ring.

56. The method of claim 53, wherein the focus distance varies non-uniformly with the angle of rotation of the focus ring.

57. The method of claim 56, wherein the smaller the difference between the focus parameter peak value and the current focus value, the smaller the amount of change in focus distance caused by the same rotation angle.

58. The method of claim 3, further comprising:

detecting whether the shooting equipment moves;

and if the shooting equipment moves, stopping displaying the first indicator mark and/or the second indicator mark.

59. The method of claim 58, wherein the detecting whether the camera is moving comprises:

and detecting whether the shooting equipment moves or not by adopting a motion sensor arranged on the shooting equipment.

60. The method of claim 59, wherein the motion sensor comprises at least one of:

a gyroscope, an accelerometer and an inertial measurement unit.

61. The method of claim 58, wherein the detecting whether the camera is moving comprises:

it is detected whether the current image has moved relative to the display assembly.

62. The method of claim 1, further comprising:

and receiving a selection instruction of a focusing object in the current image.

63. The method of claim 62, wherein receiving the selection instruction of the focusing object in the current image comprises:

and receiving a selection instruction of an focusing point on the focusing object in the current image.

64. The method of claim 62, wherein the current image is displayed on a touch screen;

the receiving of the selection instruction of the focusing object in the current image comprises:

and detecting a touch operation on a focusing object displayed on the touch screen.

65. The method of claim 1, wherein calculating a focus parameter peak value for an object in focus in the current image when in focus comprises:

carrying out image analysis on the current image to obtain a focusing evaluation function;

and calculating the focusing parameter peak value of the focusing object in the current image when focusing according to the focusing evaluation function.

66. The method of claim 65, wherein said image analyzing said current image to obtain a focus evaluation function comprises:

and carrying out image analysis on the current image in a frequency domain to obtain a focusing evaluation function.

67. The method of claim 66, wherein the image analyzing the current image in the frequency domain comprises:

and performing image analysis on the current image based on discrete wavelet transform.

68. The method of claim 66, wherein the image analyzing the current image in the frequency domain comprises:

and performing image analysis on the current image based on discrete cosine transform.

69. The method of claim 65, wherein said image analyzing said current image to obtain a focus evaluation function comprises:

and carrying out image analysis on the current image to obtain the information entropy of the current image, and taking the information entropy as a focusing evaluation function.

70. The method of claim 65, wherein said image analyzing said current image to obtain a focus evaluation function comprises:

and carrying out differential operation on the current image to obtain a gray level difference value of the current image, and taking the gray level difference value of the current image as a focusing evaluation function.

71. A control device, comprising: a memory and a processor;

the memory is used for storing program codes;

the processor, invoking the program code, when executed, is configured to:

the processor is specifically configured to, when performing a focusing prompt according to the focusing parameter peak value and the current focusing value:

wherein a rate of change of the indicated distance between the first indicator and the second indicator increases with decreasing indicated distance;

72. The control device of claim 71, wherein the focus adjustment assembly comprises at least one of:

focusing ring, adjustment button, adjusting wheel.

73. The control device of claim 71, wherein an indicated distance between the first indicator and the second indicator is related to a difference between the focus parameter peak value and the current focus value.

74. The control device of claim 73, wherein the processor, when displaying the first indicator on the display assembly, is further configured to:

displaying a first indicator in a preset area of a display assembly;

correspondingly, when the processor displays the second indicator on the display component, the processor is specifically configured to:

75. The control device of claim 74, wherein the preset area comprises the focusing object.

76. The control device according to claim 74 or 75, wherein the preset area comprises a target indication frame for indicating an object selected for focusing.

77. The control device of claim 73, wherein the processor, when displaying the first indicator on the display assembly, is further configured to:

when the processor displays the second indicator on the display component, the processor is specifically configured to:

78. The control device of claim 77, wherein the processor, when displaying the first indicator on the scale image displayed on the display assembly, is further configured to:

correspondingly, when the processor displays the second indicator on the scale image displayed on the display assembly, the processor is specifically configured to:

79. A control device as claimed in claim 77 or 78 wherein the scale image comprises a scale curve.

80. The control device of claim 79, wherein said graduated curve is a semi-circular arc.

81. A control device as claimed in claim 77 or 78 wherein the scale image comprises a scale line.

82. The control device of claim 78, wherein the middle position of the scale image is located in a preset area of the display component, the preset area comprises a target indication frame, and the target indication frame is used for indicating an object for selecting focusing.

83. The control device of claim 73, wherein the processor displays a first indicator on a display component, the first indicator being configured to, when indicating the focus parameter peak value, in particular:

the processor displays a second indication mark on the display component, wherein the second indication mark is specifically used for:

wherein a center of the second bezel overlaps a center of the first bezel.

84. The control device of claim 83, wherein the first frame has a constant size, and the second frame has a size that varies with the adjusted position of the focus adjustment assembly.

85. The control device according to claim 83 or 84, wherein the processor, when displaying the second frame on the display assembly, is specifically configured to:

86. The control device according to claim 83 or 84, wherein the processor, when displaying the second frame on the display assembly, is specifically configured to:

87. The control device of claim 83 or 84, wherein the first border is a target indication frame, and the target indication frame is used for indicating an object selected for focusing.

88. The control device of claim 83 or 84, wherein the second frame disappears after a preset time for focusing to be completed.

89. The control device of claim 83, wherein the processor displays a first frame on the display assembly, the first frame being configured to, when indicating the focus parameter peak value, specifically:

the processor displays a second frame on the display component, where the second frame is specifically configured to, when indicating the current focus value:

wherein the second ring and the first ring are concentric circles.

90. The control device of claim 89, wherein the first loop is of a constant size and the second loop is of a size that varies with the adjusted position of the focus adjustment assembly.

91. The control device of claim 89 or 90, wherein the processor, when displaying the second ring on the display assembly, is further configured to:

92. The control device of claim 89 or 90, wherein the processor, when displaying the second ring on the display assembly, is further configured to:

93. The control device according to claim 89 or 90, wherein the first ring is a target indication frame for indicating an object selected for focusing.

94. The control device of claim 89 or 90, wherein the second ring disappears after a preset time of focusing completion.

95. The control device of claim 73, wherein the processor displays a first indicator on a display component, the first indicator being configured to, when indicating the focus parameter peak value, in particular:

96. The control device of claim 95, wherein the position of the line segment is unchanged;

97. The control device of claim 95 or 96,

98. The control device of claim 95 or 96,

99. The control device of claim 95 or 96, wherein the line segment and the semi-circle are located within a target indicating ring, the target indicating ring being used to indicate an object selected for focusing.

100. The control device of claim 99, wherein the radius of the target indicating ring is greater than or equal to the radius of the semicircle.

101. The control device of claim 73, wherein the processor displays a first indicator on a display component, the first indicator being configured to, when indicating the focus parameter peak value, in particular:

102. The control device of claim 101, wherein the position of the first line segment is unchanged;

103. The control device of claim 101 or 102,

104. The control device of claim 101 or 102,

105. The control device of claim 101 or 102, wherein the first line segment and the second line segment are located within a target indication ring, the target indication ring being used to indicate an object selected for focusing.

106. The control device of claim 105, wherein the diameter of the target indicating ring is greater than or equal to the length of the first line segment; or

107. The control device of claim 73, wherein the display assembly comprises a screen;

the processor is further configured to:

108. The control device of claim 73, wherein the processor is further configured to:

109. The control device of claim 108, wherein the goal indication box comprises a goal alert ring.

110. The control device of claim 108 or 109, wherein at least one of the first indicator and the second indicator is displayed outside the target indicator frame at a position within a preset distance range from the target indicator frame.

111. The control device of claim 108 or 109, wherein at least one of the first indicator and the second indicator is displayed within the target indicator box.

112. The control device of claim 108 or 109, wherein at least one of the first indicator and the second indicator is displayed on the target indicator frame.

113. The control device of claim 109, wherein the target indication frame disappears after a preset time for focusing to be completed.

114. The control device of claim 73, wherein the first indicator mark and/or the second indicator mark disappears after a preset time for focusing to be completed.

115. The control device of claim 73, wherein an indicated distance between the first indicator and the second indicator is proportional to a difference between the focus parameter peak value and the current focus value.

116. The control device of claim 73, wherein the processor is further configured to:

117. The control device of claim 116, wherein the indicated distance between the first indicator mark and the second indicator mark varies non-uniformly with the adjusted position of the focus adjustment assembly.

118. The control device of claim 116, wherein the processor, when updating the current focus value according to the change in the adjusted position of the focus adjustment assembly, is specifically configured to:

119. The control device of claim 118, wherein the indicated distance between the first indicator mark and the second indicator mark varies non-uniformly with the angle of rotation of the focus ring.

120. The control device according to claim 119, wherein when the indication distance between the first indication mark and the second indication mark is within different preset ranges, the change rates of the indication distance are different, and the preset ranges and the change rates of the indication distance are in one-to-one correspondence.

121. The control device according to claim 119 or 120, wherein the rate of change of the indicated distance between the first indicator and the second indicator includes an amount of change of the indicated distance between the first indicator and the second indicator when the focus ring is rotated by a unit angle.

122. The control device of claim 71, wherein the focus distance varies uniformly with the change in the adjusted position of the focus adjustment assembly.

123. The control device of claim 71, wherein the focus distance varies non-uniformly with changes in the adjusted position of the focus adjustment assembly.

124. The control device of claim 123, wherein the smaller the difference between the focus parameter peak value and the current focus value, the smaller the amount of change in focus distance caused by the same amount of change in adjustment position.

125. The control device of claim 122, wherein the focus distance varies uniformly with the rotation angle of the focus ring.

126. The control device of claim 123, wherein the focus distance varies non-uniformly with the angle of rotation of the focus ring.

127. The control device of claim 126, wherein the smaller the difference between the focus parameter peak value and the current focus value, the smaller the amount of change in focus distance caused by the same rotation angle.

128. The control device of claim 73, wherein the processor is further configured to:

detecting whether the shooting equipment moves;

129. The control device of claim 128, wherein the processor, when detecting whether the camera is moving, is configured to:

130. The control device of claim 129, wherein the motion sensor comprises at least one of:

a gyroscope, an accelerometer and an inertial measurement unit.

131. The control device of claim 128, wherein the processor, when detecting whether the camera is moving, is configured to:

132. The control device of claim 71, wherein the processor is further configured to:

133. The control device of claim 132, wherein the processor, when receiving the instruction to select the object in focus in the current image, is further configured to:

134. The control device of claim 132, wherein the current image is displayed on a touch screen;

when the processor receives a selection instruction of a focusing object in a current image, the processor is specifically configured to:

135. The control device of claim 71, wherein the processor, when calculating the focus parameter peak value of the focused object in the current image in focusing, is specifically configured to:

136. The control device of claim 135, wherein the processor, when performing image analysis on the current image to obtain the focus evaluation function, is specifically configured to:

137. The control device of claim 136, wherein the processor, when performing image analysis on the current image in the frequency domain, is specifically configured to:

138. The control device of claim 136, wherein the processor, when performing image analysis on the current image in the frequency domain, is specifically configured to:

139. The control device of claim 135, wherein the processor, when performing image analysis on the current image to obtain the focus evaluation function, is specifically configured to:

140. The control device of claim 135, wherein the processor, when performing image analysis on the current image to obtain the focus evaluation function, is specifically configured to:

141. A photographing apparatus, characterized by comprising:

a body;

the focusing adjusting component is connected with the optical component and used for adjusting the focal length of the optical component; and

the control device of any one of claims 71-140.

142. A camera system, comprising:

a body;

the focusing adjustment assembly is arranged on the body and used for adjusting the focal length of an optical assembly of the shooting device; and

the control device of any one of claims 71-140.