CN104184947A - Remote photographing focusing method and system - Google Patents
Remote photographing focusing method and system Download PDFInfo
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- CN104184947A CN104184947A CN201410416915.0A CN201410416915A CN104184947A CN 104184947 A CN104184947 A CN 104184947A CN 201410416915 A CN201410416915 A CN 201410416915A CN 104184947 A CN104184947 A CN 104184947A
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Abstract
The invention discloses a remote photographing focusing method and system. The system specifically comprises a control terminal and a shooting terminal, the control terminal and the shooting terminal are connected, a callback function used for processing data returned from the shooting terminal is registered, then the control terminal starts a remote photographing application, a shooting instruction is sent to the shooting terminal, whether the shooting terminal supports a focusing function or not is inquired, if the shooting terminal supports the focusing function, a shooting preview interface is started, a focal length adjusting range and a real-time preview picture are sent to the control terminal, and the control terminal displays an operation control used for adjusting the focal length on the preview interface of the control terminal according to the focal length adjusting range. According to the remote photographing focusing method and system, the control terminal remotely controls the shooting terminal to conduct focusing and photographing, therefore, photographing operations are flexible and various, operations such as autodyne and group photographing are facilitated greatly, a picture can be previewed in the focusing process, and the focusing accuracy and the photographing quality are improved.
Description
Technical field
The present invention relates to mobile communication technology field, relate in particular to a kind of method and system of remote photographic focusing.
Background technology
In recent years, along with developing rapidly of mobile communication technology, except existing digital camera, increasing mobile terminal device has possessed camera function, as mobile phone, PDA(Personal Digital Assistant), panel computer etc.These possess mobile terminal and the digital camera of camera function, make people can record at any time moment excellent in life, enrich people's life, but in the process of taking pictures, almost everyone ran into and looks for people to help taking pictures to oneself, or required the situation of help by others, especially in the time autodyning and take a group photo, this comes from the unicity of photographing device mode of operation, can not well carry out remote operation, has had a strong impact on user's experience.
Summary of the invention
In view of above-mentioned the deficiencies in the prior art part, the object of the present invention is to provide a kind of method and system of remote photographic focusing, control terminal is by Long-distance Control camera terminal, control camera terminal focusing, take pictures and focus the functions such as preview interface, thereby better control focusing quality and shooting effect, make to take pictures easy to operate, various, precisely flexible, improved user's experience.
In order to achieve the above object, the present invention has taked following technical scheme:
A method for remote photographic focusing, described method comprises the steps:
A, control terminal are connected with camera terminal, and registration is for the treatment of the call back function of camera terminal passback data;
B, control terminal start remote photographic application, send and take instruction and inquire whether it supports the function of focusing to camera terminal;
C, camera terminal are opened shooting preview interface, and send focus adjustment scope and live preview picture to control terminal;
D, control terminal show the operational controls for focusing in its preview interface according to described focus adjustment scope.
The method of described remote photographic focusing, also comprises the steps:
Focusing operational order when E, control terminal reception user operate described operational controls, sends the control command that changes focal length to camera terminal;
F, camera terminal arrange the focal length of camera according to the control command of described change focal length, live preview picture is returned to control terminal;
G, control terminal receive described live preview picture and show.
Further, the method for described remote photographic focusing, also comprises the steps:
H, control terminal send photographing instruction to camera terminal and complete to control camera terminal the action of taking pictures.
The method of described remote photographic focusing, also comprises the steps: after described step H
I, camera terminal carry out convergent-divergent according to the screen size of control terminal to the image of taking;
The definition of J, reduction image, and image compression is returned to control terminal demonstration.
In the method for described remote photographic focusing, described step F specifically comprises:
F1, camera terminal arrange the focal length of camera according to the control command of described change focal length;
F2, according to the screen size of control terminal, live preview picture is carried out to convergent-divergent;
The definition of F3, reduction live preview picture, and squeezed data;
F4, the picture data of compression is returned to control terminal.
Wherein, in step F 4, camera terminal returns to control terminal with the frequency of 3 frames per second by the picture data of compression.
The method of described remote photographic focusing, in described steps A, control terminal connects by bluetooth or WIFI and camera terminal.
In the method for described remote photographic focusing, described steps A specifically comprises:
A1, control terminal send bluetooth online request to camera terminal;
A2, the camera terminal described bluetooth online request of giving and accepting, opens BTNotification program and starts monitoring service;
A3, control terminal start monitoring service, and return the call back function of data for the treatment of camera terminal to monitoring service registration.
In the method for described remote photographic focusing, the passback data of camera terminal comprise: the error code of the failure of taking pictures, the successful number of taking pictures, image echo.
Corresponding, it is a kind of for realizing the system of method of described remote photographic focusing that the present invention also provides, and comprising: control terminal and camera terminal;
Described control terminal, for being connected with camera terminal, and registration is for the treatment of the call back function of camera terminal passback data; Start remote photographic application, send and take instruction and inquire whether it supports the function of focusing to camera terminal;
Described camera terminal, for opening shooting preview interface, and sends focus adjustment scope and live preview picture to control terminal;
Described control terminal, also for showing the operational controls for focusing in preview interface according to described focus adjustment scope.
Compared to prior art, the method and system of remote photographic focusing provided by the invention, comprise control terminal and camera terminal, control terminal connects camera terminal by bluetooth, send and take instruction and inquire whether it supports the function of focusing to camera terminal, camera terminal is opened shooting preview interface, and send focus adjustment scope and live preview picture to control terminal, control terminal shows the operational controls for focusing in its preview interface according to focus adjustment scope, user can and be taken pictures by the focusing of operational controls control camera terminal, realize in real time, the function that Long-distance Control camera terminal is taken pictures and focused, and energy live preview focusing result and shooting effect, the quality of photographic images and the facility of operation are greatly improved, flexibility.
Brief description of the drawings
Fig. 1 is the method flow diagram of remote photographic focusing of the present invention.
Fig. 2 is the bluetooth SPP protocol architecture figure of the method for remote photographic focusing of the present invention.
Fig. 3 is the concrete grammar flow chart of the method step S6 of remote photographic focusing of the present invention.
Fig. 4 is the method flow diagram of the action of taking pictures under non-focusing pattern in the method for remote photographic of the present invention focusing.
Fig. 5 is the present invention for realizing the structured flowchart of system of method of remote photographic focusing.
Embodiment
The invention provides a kind of method and system of remote photographic focusing, setting up bluetooth by control terminal and camera terminal is connected, control terminal Long-distance Control camera terminal is realized live preview focus effect and the preview of taking pictures, convenient, fast, accurate Long-distance Control camera terminal Focussing and take pictures.
For making object of the present invention, technical scheme and effect clearer, clear and definite, developing simultaneously referring to accompanying drawing, the present invention is described in more detail for embodiment.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
Refer to Fig. 1, the method for described remote photographic focusing specifically comprises the steps:
S1, control terminal are connected with camera terminal, and registration is for the treatment of the call back function of camera terminal passback data.
Wherein, described control terminal connects by bluetooth or WIFI and camera terminal; In the present embodiment, described control terminal connects by bluetooth and camera terminal, and in the time that bluetooth is online, described step S1 specifically comprises: the first step, control terminal send bluetooth online request to camera terminal; Second step, the camera terminal described bluetooth online request of giving and accepting, opens BTNotification program and starts monitoring service; The 3rd step, control terminal start monitoring service, and return the call back function of data for the treatment of camera terminal to monitoring service registration.
Wherein, described BTNotification program is the apk bag being arranged in camera terminal, after starting, this program just monitors the control command from functional mobile phone end, according to the corresponding action of command execution or passback data, transfer of data transmits between control terminal and camera terminal with the form of packet.
Bluetooth is the wireless communication technology of a kind of support equipment short haul connection (in general 10 meters), can carry out wireless messages exchange comprising between numerous electronic equipments such as mobile phone, PDA, wireless headset, notebook computer.The underlying protocol that the present embodiment bluetooth connects adopts bluetooth SPP (Serial Port profile bluetooth serial port) agreement, SPP is in numerous BT profile, and it has defined between two bluetooth equipments by process and the rule of bluetooth emulation RS232 serial communication standard.It makes had a kind of replacement scheme-BT virtual serial port of wireless transmission to transmit based on the application of wire transmission, if Fig. 2 is SPP protocol architecture figure:
This SPP protocol architecture figure comprises blue-tooth device A and blue-tooth device B, wherein, blue-tooth device A comprises connection request module 101, serial ports emulation API module 102, for finding which service is available, and the bluetooth service discovery protocol module 103 of the feature of definite these available service, for the Bluetooth adapter based on GSM TS 07.10 104 of serial ports emulation API module 102 for application program is provided, management agreement module 105, logic link control protocol module 106 and bluetooth baseband 107, wherein, described management agreement module 105, logic link control protocol module 106 and bluetooth baseband 107 are equivalent to physical layer and the data link layer of OSI seven models.Blue-tooth device B is identical with blue-tooth device A, and stream oriented device connects by bluetooth SPP agreement; The maximum transfer speed that described SPP agreement is supported is in theory 16KB per second (128kbps), but in practice, the chances are 10KB left and right, and it is supported in and between equipment, sets up many connections simultaneously, but synchronization can only be processed a connection.
It is operating system that described control terminal and camera terminal are Android, because Android is the system for mobile device that develops on the operating system Linux based on increasing income, it is made up of bottom linux kernel, middleware, user interface and application software, adopt software heap layer architecture, bottom, by C language development, only provides basic function; Intermediate layer comprises that function library and virtual machine developed by C++; The various application software of the superiors are as call, note, telephone directory etc., it is the java applet running on virtual machine, can be by individual or company's self-developing, the form that is compiled into apk is installed in Android system and can directly uses, therefore, respective application software is set on control terminal and camera terminal, can realize wireless connections by bluetooth or WIFI, certainly, the operating system of described control terminal and camera terminal can also be Windows or apple IOS, as long as can realize both wireless connections.
Described control terminal mainly plays long-range accurate control camera terminal and takes, return instruction or the data of coming in order correctly to listen to camera terminal, control terminal need start a monitoring service, this service reception can be resolved after passback data, calls corresponding call back function according to analysis result.Therefore before control terminal starts remote photographic application, data to call back function of monitoring service registration to camera terminal passback, comprise that the error code of the failure of taking pictures, take pictures successful number, image echo etc. process, to ensure that control terminal receives camera terminal and returns the instruction of coming or the correctness of data, improve the reliability of instruction and data.
S2, control terminal start remote photographic application, send and take instruction and inquire whether it supports the function of focusing to camera terminal.
Because not all camera terminal is all supported the function of focusing, if to the control of focusing of the camera terminal of the function of not supporting to focus, easily cause that program reports an error, cause puzzlement to user, therefore, control terminal starts after remote photographic application, need send and takes instruction and inquire whether it supports the function of focusing to camera terminal, feeds back corresponding result to control terminal by camera terminal.In the time of camera terminal support focusing function, and then enter next step S3, if do not support the function of focusing, carry out the action of taking pictures under non-focusing pattern.
S3, camera terminal are opened shooting preview interface, and send focus adjustment scope and live preview picture to control terminal.
S4, control terminal show the operational controls for focusing in its preview interface according to described focus adjustment scope.
In the embodiment of the present invention, on control terminal, can show live preview picture and the focus adjustment scope of camera terminal, and can carry out long-range focusing control to camera terminal by control terminal, realize the Long-distance Control to camera terminal, can not preview screen while having overcome Long-distance Control camera terminal, control the shortcoming of focusing range, Long-distance Control camera terminal is taken pictures and become simple as direct control, convenient, greatly improve quality and the convenience of taking pictures.
The method of the remote photographic focusing that the embodiment of the present invention provides, can complete the focus adjustment work of camera terminal by control terminal, as shown in Figure 1, the method for described remote photographic focusing also comprises the steps:
Focusing operational order when S5, control terminal reception user operate described operational controls, sends the control command that changes focal length to camera terminal.
S6, camera terminal arrange the focal length of camera according to the control command of described change focal length, live preview picture is returned to control terminal.
S7, control terminal receive described live preview picture and show.
By the transmission of the instruction and data between control terminal and camera terminal, the live preview picture after Focussing is shown on control terminal, further improve the precision of focusing.Consider the restriction of bluetooth transmission speed, in the time of preview, camera terminal is first according to the screen of control terminal, preview screen is carried out to convergent-divergent, then, by reducing definition, picture data is compressed to a rational numerical value, send to control terminal with the frequency of 3 frames per second again, be that the preview screen that control terminal shows not is completely smooth, but refresh frame by frame, between picture, have the brief time interval; Thus, in embodiments of the present invention, as shown in Figure 3, described step S6 specifically comprises the steps:
S61, camera terminal arrange the focal length of camera according to the control command of described change focal length;
S62, according to the screen size of control terminal, live preview picture is carried out to convergent-divergent;
The definition of S63, reduction live preview picture, and squeezed data;
S64, the picture data of compression is returned to control terminal.
Wherein, in step S64, camera terminal returns to control terminal with the frequency of 3 frames per second by the picture data of compression; Although control terminal shows that preview screen is to refresh frame by frame, be not completely smooth, between picture, there is the brief time interval, because interval time is shorter, can't affect and take and focusing.
Further, please continue to refer to Fig. 1, the method for remote photographic focusing of the present invention also comprises the steps:
S8, control terminal send photographing instruction to camera terminal and complete to control camera terminal the action of taking pictures.
Screen size, the resolution etc. of considering control terminal are different from camera terminal, and the method for remote photographic focusing of the present invention also comprises the steps:
S9, camera terminal carry out convergent-divergent according to the screen size of control terminal to the image of taking.
For convenience of hand-held, control terminal is generally comparatively small and exquisite, screen size is less, resolution of screen is no more than 720P, preferably, resolution with QVGA and QCIF grade is better, and can be too not fuzzy in order to ensure that image after camera terminal convergent-divergent shows on control terminal, the image that camera terminal is taken also with 1600 × 1200,1080p or less resolution comparatively suitable, avoid abnormal because of the camera terminal demonstrations that cause different from control terminal screen size, realized the best image of image.
The definition of S10, reduction image, and image compression is returned to control terminal demonstration.
The image resolution ratio of taking due to camera terminal is higher than the resolution of screen of control terminal, therefore camera terminal first compresses image, resolution and the control terminal of image are matched, returning to control terminal shows again, reduce volume of transmitted data, improved data transmission bauds, image can be shown faster on control terminal, and can not affect image displaying quality, avoid high-definition picture on low-res screen, to show the distortion causing.
Further, in the time that camera terminal is not supported to focus function, as shown in 4, then carry out the action of taking pictures under non-focusing pattern, specifically comprise the steps:
Live preview picture is returned to control terminal by S21, camera terminal;
S22, control terminal receive described live preview picture and show;
S23, send photographing instruction control camera terminal by control terminal to camera terminal and complete the action of taking pictures;
S24, camera terminal carry out convergent-divergent according to the screen size of control terminal to the image of taking, and reduce the definition of image, image compression is returned to control terminal and show.
In the time that camera terminal is not supported focus adjustment, control terminal is only controlled camera terminal and is carried out shooting action, and the control of not focusing.In sum, the functions such as the embodiment of the present invention has realized that Long-distance Control camera terminal is focused, taken pictures, and can operate according to live preview picture, improve focusing precision and the quality of taking pictures, and take into full account the difference between feature, photo resolution and the resolution of screen of Bluetooth transmission, preview screen is carried out to convergent-divergent, improved data transmission bauds.
Based on said method embodiment, the present invention also provides a kind of system based on remote photographic focusing, comprising: control terminal 10 and camera terminal 20.
Described control terminal 10, connects for camera terminal 20, and registration returns the call back function of data for the treatment of camera terminal 20; Start afterwards remote photographic application, send and take instruction and inquire whether it supports the function of focusing to camera terminal 20.
Described camera terminal 20, for opening shooting preview interface, and sends focus adjustment scope and live preview picture to control terminal.
Described control terminal 10, also for showing the operational controls for focusing in preview interface according to described focus adjustment scope.
Described control terminal comprises mobile phone, panel computer and the intelligent Wearable equipment etc. that possess wireless transmission function; Described camera terminal comprises digital camera, smart mobile phone, panel computer, electronic reader and the intelligent Wearable equipment etc. that possess wireless transmission function.Described wireless transmission function comprises bluetooth and WIFI etc.Control terminal is by setting up bluetooth with camera terminal or WIFI is connected, obtain whether supporting of passing back of camera terminal focus result, focus adjustment scope and the live preview picture of function, and then operational controls and the live preview picture of vision-control focal length focused and shooting operation for user on control terminal, thereby realize the Long-distance Control to camera terminal, and by live preview picture and focus adjustment, improve shooting quality, specifically referred to said method embodiment.
Certainly, the action of all right Long-distance Control camera terminal of described control terminal except focusing, shooting, for example, open photoflash lamp, video recording etc. and can directly control the action that camera terminal operates.
Be understandable that, for those of ordinary skills, can be equal to replacement or change according to technical scheme of the present invention and inventive concept thereof, and all these changes or replacement all should belong to the protection range of the appended claim of the present invention.
Claims (10)
1. a method for remote photographic focusing, is characterized in that, comprises the steps:
A, control terminal are connected with camera terminal, and registration is for the treatment of the call back function of camera terminal passback data;
B, control terminal start remote photographic application, send and take instruction and inquire whether it supports the function of focusing to camera terminal;
C, camera terminal are opened shooting preview interface, and send focus adjustment scope and live preview picture to control terminal;
D, control terminal show the operational controls for focusing in its preview interface according to described focus adjustment scope.
2. the method for remote photographic focusing according to claim 1, is characterized in that, also comprises the steps:
Focusing operational order when E, control terminal reception user operate described operational controls, sends the control command that changes focal length to camera terminal;
F, camera terminal arrange the focal length of camera according to the control command of described change focal length, live preview picture is returned to control terminal;
G, control terminal receive described live preview picture and show.
3. the method for remote photographic focusing according to claim 2, is characterized in that, also comprises the steps:
H, control terminal send photographing instruction to camera terminal and complete to control camera terminal the action of taking pictures.
4. the method for remote photographic focusing according to claim 3, is characterized in that, after described step H, also comprises the steps:
I, camera terminal carry out convergent-divergent according to the screen size of control terminal to the image of taking;
The definition of J, reduction image, and image compression is returned to control terminal demonstration.
5. the method for remote photographic focusing according to claim 2, is characterized in that, described step F specifically comprises:
F1, camera terminal arrange the focal length of camera according to the control command of described change focal length;
F2, according to the screen size of control terminal, live preview picture is carried out to convergent-divergent;
The definition of F3, reduction live preview picture, and squeezed data;
F4, the picture data of compression is returned to control terminal.
6. the method for remote photographic focusing according to claim 5, is characterized in that, in step F 4, camera terminal returns to control terminal with the frequency of 3 frames per second by the picture data of compression.
7. according to the method for the remote photographic focusing described in claim 1 ~ 6 any one, it is characterized in that, in described steps A, control terminal connects by bluetooth or WIFI and camera terminal.
8. the method for remote photographic focusing according to claim 7, is characterized in that, described steps A specifically comprises:
A1, control terminal send bluetooth online request to camera terminal;
A2, the camera terminal described bluetooth online request of giving and accepting, opens BTNotification program and starts monitoring service;
A3, control terminal start monitoring service, and return the call back function of data for the treatment of camera terminal to monitoring service registration.
9. the method for remote photographic focusing according to claim 1, is characterized in that, the passback data of camera terminal comprise: the error code of the failure of taking pictures, the successful number of taking pictures, image echo.
10. a system for the method for focusing for the remote photographic of realizing as described in claim 1-9 any one, is characterized in that, comprising: control terminal and camera terminal;
Described control terminal, for being connected with camera terminal, and registration is for the treatment of the call back function of camera terminal passback data; Start remote photographic application, send and take instruction and inquire whether it supports the function of focusing to camera terminal;
Described camera terminal, for opening shooting preview interface, and sends focus adjustment scope and live preview picture to control terminal;
Described control terminal, also for showing the operational controls for focusing in preview interface according to described focus adjustment scope.
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