JP2010041621A - Imaging device, its control method, and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To actualize technology by which a user recognizes a failure in photography easily. <P>SOLUTION: An imaging means for photographing an object and forming image data, an operation means for receiving a photography command about the object by the imaging means from a user, a display means for displaying the image data photographed by the imaging means, a face detection means for detecting face area of a person contained in the image data photographed by the imaging means before the photography command is operated by the operation means and detecting the face area of a person contained in the image data photographed by the imaging means after the photography command is operated by the operation means, and a control means for comparing the image data before and after the operation of the photography command by the operation means and controlling the display means so that the face area before the operation of photography command is displayed in a recognizable state if there is no face area in the place, where was the face area before the operation of photography command, after the operation of photography command. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a technique for detecting a face area of a subject and performing shooting.

  2. Description of the Related Art Conventionally, a technique for detecting the face of a subject from a subject image captured by an image sensor such as a CCD is known. Various techniques are known as techniques for detecting a face. For example, there is a method using learning represented by a neural network. In addition, there is a technique for identifying parts having physical shape features such as eyes, nose, mouth, and facial contour from image information using template matching. In addition, there is a technique that uses a statistical analysis by detecting feature amounts of image information such as skin color and eye shape. Furthermore, it is determined whether the immediately preceding face area is near the detected position, the color near the face area is determined to take into account the color of the clothes, or the face near the center of the screen is used for face identification. There is a method of setting a low threshold value.

On the other hand, techniques for variously using the face thus detected as information at the time of photographing are disclosed. Japanese Patent Application Laid-Open No. 2004-133867 describes a technique for performing continuous shooting using face position information of an image shot within a predetermined time set in advance when face detection becomes impossible during continuous shooting. In Patent Document 2, a face image is captured and stored as image data, a facial expression is extracted therefrom, the state of the eyelid is detected from the extracted facial expression, and the state of the eye from the state of the eyelid Techniques for determining whether or not are described.
JP 2006-157617 A JP 2004-199386 A

  However, even when a face-detected image is taken as described above, a good image is not always obtained. For example, the face detected for the taken image may be meditating. . In this case, it is necessary for the user to check whether the eyes have been meditated by using a REC review function that switches the camera to the playback mode and plays back the image after shooting, or automatically plays back the image after shooting. However, since the screen size of the display device mounted on the camera is small, it is difficult to confirm whether the eyes are meditated with the full screen display. For this reason, it is necessary for the user to perform complicated operations such as enlarging the reproduced image after shooting and confirming whether the eyes are closed.

  This invention is made | formed in view of the said subject, and implement | achieves the technique in which a user can recognize failure photography easily.

  In order to solve the above-described problem, an imaging apparatus according to the present invention includes an imaging unit that captures an image of a subject and generates image data, an operation unit that receives a shooting instruction of the subject by the imaging unit from a user, and the imaging unit. Display means for displaying the imaged image data, and detecting a human face area included in the image data imaged by the imaging means before the imaging instruction is given by the operating means, and the imaging means by the operating means The face detection means for detecting the face area of the person included in the image data taken by the imaging means after the image is taken is compared with the image data before and after the shooting instruction is given by the operation means, and the shooting instruction is given. When there is no face area after the shooting instruction is given at the position where the face area was before And a control means for controlling said display means to display the.

  According to the control method of the imaging apparatus of the present invention, an imaging unit that captures an image of a subject and generates image data, an operation unit that receives a shooting instruction of the subject by the imaging unit from a user, and an image captured by the imaging unit And a display means for displaying image data, wherein a face area of a person included in the image data picked up by the image pickup means is detected before a shooting instruction is given by the operation means. And a face detection step of detecting a face area of a person included in the image data imaged by the imaging means after the imaging instruction is given by the operating means, and image data before and after the imaging instruction by the operating means is given. In comparison, if there is no face area after the shooting instruction is given at the position where the face area was before the shooting instruction is given, the shooting instruction is And a control step for controlling the display means so as to distinguishably display the face area before being.

  According to the present invention, it becomes possible for a user to quickly recognize an undesired shooting result such as eye meditation of a subject without performing a complicated operation after shooting.

  The best mode for carrying out the present invention will be described below in detail with reference to the accompanying drawings.

  The embodiment described below is an example as means for realizing the present invention, and should be appropriately modified or changed according to the configuration and various conditions of the apparatus to which the present invention is applied. It is not limited to the embodiment.

[First Embodiment]
FIG. 1 is a block diagram of an electronic camera according to a first embodiment of the present invention.

  In FIG. 1, reference numeral 101 denotes a focus lens for focusing on an imaging surface of an image sensor 112 described later. Reference numeral 102 denotes a photo interrupter that detects the initial position of the focus lens 101. A focus lens driving motor 103 drives the focus lens 101. Reference numeral 104 denotes a focus lens drive circuit for operating the focus lens 101 by inputting a drive signal to the focus lens drive motor 103. Reference numeral 105 denotes a light amount adjusting member such as an aperture or a shutter. A light amount adjusting member driving motor 106 drives the light amount adjusting member 105. Reference numeral 107 denotes a light amount adjusting member driving circuit for operating the light amount adjusting member 105 by inputting a driving signal to the light amount adjusting member driving motor 106. A zoom lens 108 changes the focal length of the photographing lens. Reference numeral 109 denotes a photo interrupter that detects the initial position of the zoom lens 108. A zoom lens driving motor 110 drives the zoom lens 108. Reference numeral 111 denotes a zoom lens drive circuit that operates the zoom lens 108 by inputting a drive signal to the zoom lens drive motor 110.

  An image sensor 112 converts reflected light from the subject into an electrical signal. Reference numeral 113 denotes an A / D converter that converts an analog signal output from the image sensor 112 into a digital signal. Reference numeral 114 denotes a timing signal generation circuit (hereinafter referred to as TG) that generates timing signals necessary for operating the image sensor 112 and the A / D converter 113. Reference numeral 115 denotes an image processing processor that performs predetermined processing on the image data input from the A / D converter 113. A buffer memory 116 temporarily stores image data processed by the image processor 115. Reference numeral 117 denotes an interface for connection to a recording medium to be described later. Reference numeral 118 denotes a recording medium such as a memory card or a hard disk. Reference numeral 119 denotes a microcontroller (hereinafter referred to as CPU) for controlling the system such as a photographing sequence.

  Reference numeral 120 denotes a zoom SW (switch) that inputs a signal to the CPU 119 in response to an operation instruction to start and stop the zoom operation by the user. Reference numeral 121 denotes a switch (hereinafter referred to as SW1) for instructing shooting preparation such as AF and AE. Reference numeral 122 denotes a photographing instruction switch (hereinafter referred to as SW2) for instructing photographing processing such as main exposure and recording of image data after receiving an operation of the photographing preparation instruction SW1. A main switch 123 is used to power on the system. Reference numeral 124 denotes a mode SW for setting the operation mode of the camera. A program memory 125 stores a program executed by the CPU 119. A work memory 126 writes and reads various data necessary for the CPU 119 to perform processing in accordance with a program stored in the program memory 125. Reference numeral 127 denotes an operation display unit for displaying an operation state of the camera and various warnings. Reference numeral 128 denotes an electronic viewfinder (hereinafter, EVF) that displays an image. Reference numeral 129 denotes a setting SW for performing various settings.

  Reference numeral 130 denotes a cross switch SW for performing an operation instruction such as selection of a menu item displayed on the operation display unit 127 or the EVF 128 and an instruction to move the AF frame position. Reference numeral 131 denotes a face detection unit that detects a person's face area from image data generated by photographing processing. Reference numeral 132 denotes an AF frame movement SW for instructing movement of the AF frame position. Reference numeral 133 denotes an image enlargement instruction SW for instructing enlargement of the image displayed on the EVF 128.

<Shooting operation>
Next, the photographing operation of the electronic camera of this embodiment will be described with reference to the flow of FIG.

  In FIG. 2, in S201, the state of the shooting preparation instruction SW1 is determined. If ON, the process proceeds to S206, and if not ON, the process proceeds to S202. In S202, face detection processing is performed according to the procedure described later. In S203, the AE operation is performed so that the brightness of the image displayed on the EVF 128 becomes appropriate by controlling the light amount adjusting member 105 and the shutter speed. In S204, an auto white balance (AWB) process is performed so that an image displayed on the EVF 128 has an appropriate color balance regardless of the color temperature of the light source. In S205, the image signal read from the image sensor 112 is subjected to predetermined processing and displayed on the EVF 128. In S206, a photographing process is performed according to a procedure described later.

<Face detection processing>
FIG. 3 is a detailed flowchart of the face detection process in S202 of FIG.

  In FIG. 3, an image signal is read from the image sensor 112 in S301. In S302, the face detection unit 131 detects the face area of the subject from the image signal read in S301. As the face detection method, the technique described in the background art is applied. In step S303, the number of face areas detected in step S302 is stored in the work memory 126. In S304, the horizontal and vertical positions in the display screen of the face area detected in S302 are stored in the work memory 126. Here, the positions corresponding to the number of face areas stored in S303 are stored. In S305, one face of the main subject (hereinafter, main face) is selected from the face areas detected in S302. Here, the main face is selected by determining the position and size of the face. That is, the face whose position is closest to the center of the screen or whose face area is the largest is the main face. In step S <b> 306, the position of the main face selected in step S <b> 305 is stored in the work memory 126.

<Shooting process>
FIG. 4 is a detailed flowchart of the photographing process in S206 of FIG.

  In FIG. 4, the main exposure AE operation is performed in S401. In S402, the main exposure AF operation is performed according to the procedure described later. In S403, the state of the photographing instruction switch SW2 is determined. If it is ON, the process proceeds to S405, and if it is not ON, the process proceeds to S404. In S404, the state of the shooting preparation instruction SW1 is determined. If it is ON, the process proceeds to S403. In step S405, the main exposure and recording are performed according to the procedure described later.

<AF operation>
FIG. 5 is a flowchart showing details of the main-exposure AF operation in S402 of FIG.

  In FIG. 5, in S501, the focus lens 101 is moved to the scan start position. Here, the scan start position is, for example, the infinite end of the focusable area. In S502, a distance measurement frame is set at the position of the face area stored in S304 of FIG.

  In step S <b> 503, the analog signal read from the image sensor 112 is converted into a digital signal by the A / D converter 113. Further, a high-frequency component of the luminance signal is extracted from the digital signal by the image processor 115 and stored in the work memory 126 as a focus evaluation value. Here, a focus evaluation value is calculated and stored for each distance measurement frame set in S502 using the image signal in the distance measurement frame. In S504, the current position of the focus lens 101 is acquired and stored in the work memory 126. When a stepping motor is applied to the focus lens drive motor 103, the position of the focus lens 101 is determined using the relative drive pulse number from the initial position detected by the photo interrupter 102. The absolute position may be measured using a rotary encoder (not shown).

  In S505, it is determined whether the current position of the focus lens 101 is equal to the scan end position. If they are equal, the process proceeds to S507, and if they are not equal, the process proceeds to S506. The scan end position is, for example, the closest end of the focusable area. In step S506, the focus lens 101 is moved by a predetermined amount in the scan end direction. In S507, the maximum one is calculated from the focus evaluation values of the distance measurement frames (hereinafter referred to as main face frames) set in the main face position acquired in S503. In step S <b> 508, the position of the focus lens 101 (hereinafter, peak position) when the maximum focus evaluation value calculated in step S <b> 507 is acquired is stored in the work memory 126. In step S509, the distance measurement frame index is set to 0 and stored in the work memory 126. For example, when the number of face areas stored in S303 in FIG. 3 is five in the screen and distance measurement frames are set for each face area, as shown in FIG. Used to identify each distance measurement frame.

  In the following, numbers such as 0, 1, 2,... Are added in order from the upper left frame except the main face frame as shown in FIG. Processing shall be performed. In the following description, the distance measurement frame index number such that the distance measurement frame corresponding to the distance measurement frame index 0 is the distance measurement frame 0, and the distance measurement frame corresponding to the distance measurement frame index 1 is the distance measurement frame 1. And the distance measurement frame number are called in association with each other.

  In S510, the maximum one of the focus evaluation values of the distance measurement frame corresponding to the currently set distance measurement frame index is calculated. In S511, the peak position of the distance measurement frame calculated in S510 is stored in the work memory 126. In S512, 1 is added to the currently stored distance measuring frame index. In S513, it is determined whether or not the currently stored distance measurement frame index is equal to the number of faces stored in S303 in FIG. 3, and if equal, the process proceeds to S514, and if not equal, the process proceeds to S510. The reason why the distance measurement frame index is compared with the number of faces stored in S303 in FIG. 3 is that the main face frame is not included in the number of distance measurement frame indexes. In S514, the focus lens 101 is moved to the peak position stored in S508. In S515, in-focus frame display determination is performed according to a procedure described later. In S516, a focusing frame is displayed according to the determination result in S515.

<In-focus frame display determination process>
FIG. 7 is a flowchart showing details of the focus frame display determination process in S515 of FIG.

  In FIG. 7, the distance measurement frame index is set to 0 and stored in the work memory 126 in S701. This distance measurement frame index is the same as that described in FIG. In S702, a difference between the peak position stored in S508 in FIG. 5 (hereinafter, main face peak position) and the peak position of the distance measurement frame corresponding to the currently set distance measurement frame index is obtained, and the difference is obtained. If it is less than the predetermined value, the process proceeds to S703, and if not less than the predetermined value, the process proceeds to S704. Here, the predetermined value is a value obtained by converting the depth of focus into the amount of movement of the focus lens 101. For example, when a stepping motor is applied to the focus lens driving motor 103, the depth of focus is set to a value converted into the number of stepping motor driving steps. In step S703, the currently set distance measurement frame index is stored in the work memory 126 as in-focus OK. In S704, 1 is added to the distance measurement frame index currently stored. In S705, it is determined whether or not the currently stored distance measurement frame index is equal to the number of faces stored in S303 in FIG. 3. If this is the case, the process ends. If not, the process proceeds to S702. Here, the distance measurement frame index is compared with the number of faces stored in S303 in FIG. 3 for the same reason as described in S513 in FIG.

  In this way, a distance measurement frame that can be displayed in focus is selected from the distance measurement frames corresponding to the positions of the respective face areas set in S502 of FIG. The distance measuring frame and main face frame thus selected are displayed on the EVF 128.

<Main exposure processing>
FIG. 8 is a flowchart showing details of the main exposure process in S405 of FIG.

  In FIG. 8, the image sensor 112 is exposed in S801. In S802, data stored in the image sensor 112 is read. In S803, the analog signal read from the image sensor 112 by the A / D converter 113 is converted into a digital signal. In step S804, the image processor 115 performs various types of image processing on the digital signal output from the A / D converter 113. In step S805, an image is displayed on the EVF 128 according to a procedure described later. In S806, the image processed in S804 is compressed according to a format such as JPEG. In S807, the data compressed in S806 is recorded on the recording medium 118 such as a memory card attached to the electronic camera body via the recording medium interface 117.

<Image display processing>
FIG. 9 is a flowchart showing details of the image display processing in S805 of FIG.

  In FIG. 9, in step S901, the face area of the subject is detected by the face detection unit 131 from the image processed in step S804 of FIG. As the face detection method, the technique described in the background art is applied as in S302 of FIG. In step S902, the position of the face area detected in step S901 is stored in the work memory 126. In step S903, the distance measurement frame index is set to 0 and stored in the work memory 126. This distance measurement frame index is the same as that described with reference to FIG.

  In S904, the face position closest to the face position stored in S304 of FIG. 3 corresponding to the current distance measurement frame index is selected from the face positions stored in S902, and the difference is calculated. That is, the difference between the positions of the face area of the same subject before and after shooting is calculated. In S905, it is determined whether the difference between the face positions calculated in S904 is less than a predetermined value. If it is less than the predetermined value, the process proceeds to S906, and if it is greater than the predetermined value, the process proceeds to S907. Here, the predetermined value is, for example, 50 pixels both vertically and horizontally. In step S906, the display index corresponding to the current distance measurement frame index is stored in the work memory 126 as OK. In S907, the display index corresponding to the current distance measurement frame index is stored in the work memory 126 as NG. In step S908, 1 is added to the current distance measurement frame index, and the result is stored in the work memory 126. In S909, it is determined whether or not the current distance measurement frame index is equal to the number of face areas stored in S303 of FIG. 3, and if equal, the process proceeds to S910, and if not equal, the process proceeds to S904.

  In this way, the face positions before and after photographing are compared sequentially for each distance measurement frame set in S502 of FIG. As shown in FIG. 6, when there are five face areas in the screen and the index is assigned from 0 to 3 other than the main face, after S908, when the distance measurement frame index is 4, the subsequent S904 In the processing at, it is assumed that the position of the main face is compared. That is, the positions are compared in the order of the distance measurement frames 0, 1, 2, 3, and the main face.

  In S910, the image processed in S804 of FIG. 8 is displayed on the EVF 128, and a distance measurement frame is displayed at the face position stored in S304 of FIG. 3 according to the display index stored in S906 and S907.

  In S911, the state of the image enlargement instruction SW133 is determined. If it is ON, the process proceeds to S912. If it is not ON, this process ends. In S912, the image displayed on the EVF 128 in S910 is enlarged centering on the distance measurement frame whose display index is NG in S907.

  Here, the display method of the image and the distance measurement frame in S910 of FIG. 9 will be described.

  FIG. 10 shows a photographed image for the distance measurement frame of FIG. Here, as for the face positions of the distance measurement frames 0, 2, 3 and the main face, the difference between the positions before and after the photographing is less than a predetermined value, and the difference between the positions of the distance measurement frame 1 before and after the photographing is a predetermined value or more. Suppose there is. Further, in the focusing frame display determination described with reference to FIG. 7, it is assumed that all the ranging frames are determined to be in focus.

  In FIG. 10, the distance measurement frames 0, 2, 3 and the main face display index whose face position difference is less than a predetermined value are OK. As a display format when the display index is OK, a solid rectangular frame is displayed at the face position as shown in FIG. At this time, the rectangular frame is made green so that it can be identified that it is in focus. On the other hand, the display index of the ranging frame 1 whose face position difference is equal to or larger than a predetermined value is NG, and the display format at this time is a rectangular frame as shown in FIG. At this time, the color of the rectangular frame is changed to yellow other than the green color used when the difference between the face positions is less than a predetermined value, so that it can be identified that the amount of deviation of the face position exceeds the predetermined range. . Further, the dotted rectangular frame is blinked. The reason for changing the form and color of the rectangular frame and blinking in this way is to warn the user. Further, when the image enlargement instruction SW133 is turned on in this state, the image is enlarged with the distance measurement frame 1 as the center. As a result, the user can check the image whose face position is shifted in more detail.

[Modification]
In FIG. 10, the case where the face position of the distance measuring frame 1 is shifted before and after the photographing has been described. On the other hand, hereinafter, a display method in the case where the face area cannot be detected from the photographed image due to the subject meditating on the eyes will be described with reference to FIG.

  As in FIG. 10, it is assumed that the distance between frames 0, 2, and 3 and the face position of the main face is less than a predetermined value before and after shooting. On the other hand, it is assumed that the face area of the captured image corresponding to the distance measuring frame 1 cannot be detected because the eyes are meditated. In this case, the face closest to the distance measurement frame 1 is the main face. At this time, if the difference in position between the distance measurement frame 1 and the main face frame is greater than or equal to a predetermined value, the difference in face position before and after shooting is greater than or equal to the predetermined value, so the display index is NG. Therefore, as in FIG. 10, the distance measurement frame 1 is a dotted rectangular frame, and the color is blinking yellow. Similar to FIG. 10, these are also displayed differently from the display index OK for warning. When the image enlargement instruction SW133 is turned on in this state, the image is enlarged centering on the distance measuring frame 1. As a result, the face with the eyes closed can be confirmed in more detail.

  As described above, when the face position detected before and after shooting is shifted, or when face detection cannot be performed by meditating the eyes, the user needs to perform a complicated operation that the state of the face before and after shooting is different. You can easily recognize without doing. In other words, the user can easily recognize the failed shooting such as eye meditation, and even by operating the image enlargement switch, the face is different from the pre-shooting state, that is, the face is displaced or the eyes are meditated. Is displayed in an enlarged manner, so that a failed image can be easily confirmed.

[Second Embodiment]
In the first embodiment, when an image is displayed on the EVF 128 after shooting, the image is enlarged by a user operation after the full screen is once displayed. On the other hand, in the second embodiment, a case where such an operation is automatically performed will be described.

  FIG. 12 is a flowchart corresponding to FIG. 9 showing the image display processing of the second embodiment.

  12, in S1201 to S1209, the same processing as S901 to S909 in FIG. 9 is performed. In step S1210, it is determined whether there is a ranging frame whose display index is NG in step S1207. If there is an NG frame in S1210, the process proceeds to S1211, and the image is enlarged and displayed on the EVF 128 around the position of the distance measurement frame whose display index is NG in S1207. On the other hand, if there is no NG frame in S1210, the process proceeds to S1212 and the image is displayed on the EVF 128 without being enlarged.

  Here, a display method of the image and the distance measurement frame in S1211 of FIG. 12 will be described.

  FIG. 13 shows an image and a distance measurement frame in S1211 of FIG. Here, it is assumed that a face is displayed on the screen as in FIG. 11, and the face corresponding to the distance measuring frame 1 is meditating. In this case, the display index of the distance measurement frame 1 is NG. Then, in S1210, it is determined that there is a frame of the display index NG, and in S1211, an image enlarged around the distance measuring frame 1 is displayed on the EVF 128.

  FIG. 13 shows a state in which the face meditating at the position of the distance measuring frame 1 in FIG. 11 is enlarged. The display format in this case is the same as in FIG. 11, in which a rectangular frame is displayed with a dotted line, the color of the rectangular frame is yellow, and the rectangular frame is blinked.

  In this example, the face detected from the photographed image is automatically magnified when the eyes are meditated, but the face is magnified when the face position is shifted before and after photographing as in the first embodiment. You may make it do.

  As described above, when the face detected from the photographed image is meditated or when the face position is shifted, the enlarged image is displayed so that the user can clearly recognize the failed image of the image. Can do. Furthermore, since the image can be enlarged and displayed without performing a special operation after shooting, the user can easily confirm the failed image without performing a complicated operation.

[Other Embodiments]
The object of the present invention can also be achieved by supplying a storage medium storing software program codes for realizing the functions of the above-described embodiments to a system or apparatus. That is, it goes without saying that this can also be achieved by the computer (CPU or MPU) of the system or apparatus reading and executing the program code stored in the storage medium.

  In this case, the program code itself read from the storage medium realizes the functions of the above-described embodiments, and the storage medium storing the program code constitutes the present invention.

  As a storage medium for supplying the program code, for example, a flexible disk, hard disk, optical disk, magneto-optical disk, CD-ROM, CD-R, magnetic tape, nonvolatile semiconductor memory card, ROM, or the like can be used. . Further, the functions of the above-described embodiments may be realized by executing the program code read by the computer.

  However, there is a case where an OS (operating system) running on the computer performs part or all of the actual processing based on the instruction of the program code, and the functions of the above-described embodiments are realized by the processing. Needless to say, it is included.

  Furthermore, the program code read from the storage medium may be written to a memory provided in a function expansion board inserted into the computer or a function expansion unit connected to the computer. After that, the CPU of the function expansion board or function expansion unit performs part or all of the actual processing based on the instruction of the program code, and the functions of the above-described embodiments are realized by the processing. Needless to say.

It is a block diagram which shows the structure of the electronic camera of 1st Embodiment which concerns on this invention. It is a flowchart which shows the imaging | photography operation | movement by the electronic camera of this embodiment. It is a flowchart which shows the detail of the face detection process of FIG. 3 is a flowchart showing details of imaging processing in FIG. 2. 6 is a flowchart showing details of the main exposure AF process of FIG. 4. FIG. 6 is a diagram illustrating correspondence between a distance measurement frame and a face position in FIG. 5. It is a flowchart which shows the detail of the focusing frame display determination process of FIG. 5 is a flowchart showing details of the main exposure process of FIG. 4. It is a flowchart which shows the detail of the image display process of FIG. It is a figure which illustrates the relationship between a ranging frame and face position when the face position has shifted | deviated before and after imaging | photography. It is a figure which illustrates the relationship between a ranging frame and a face position in case the face after imaging has closed eyes. It is a flowchart which shows the detail of the image display process of 2nd Embodiment. It is a figure which illustrates the enlarged display when the face after imaging has closed eyes.

Explanation of symbols

DESCRIPTION OF SYMBOLS 101 Focus lens 102 Photo interrupter 103 Focus lens drive motor 104 Focus lens drive circuit 105 Light quantity adjustment member 106 Light quantity adjustment member drive motor 107 Light quantity adjustment member drive circuit 108 Zoom lens 109 Photo interrupter 110 Zoom lens drive motor 111 Zoom lens drive circuit 112 Imaging Element 113 A / D converter 114 Timing signal generation circuit 115 Image processor 116 Buffer memory 117 Recording medium I / F
118 Recording Medium 119 System Control CPU
120 Zoom SW
121 SW1
122 SW2
123 Main SW
124 Mode SW
125 Program memory 126 Work memory 127 Operation display unit 128 Electronic viewfinder 129 Setting SW
130 cross switch
131 Face Detection Unit 132 AF Frame Movement SW
133 Image enlargement instruction SW

Claims (9)

Imaging means for imaging a subject and generating image data;
Operating means for receiving an instruction to shoot a subject by the imaging means from a user;
Display means for displaying image data picked up by the image pickup means;
An image captured by the imaging means after detecting a human face area included in the image data imaged by the imaging means before the imaging instruction is given by the operating means, and after the imaging instruction is given by the operating means Face detection means for detecting a face area of a person included in the data;
Compare the image data before and after the shooting instruction is given by the operation means, and if there is no face area after the shooting instruction is given at the position where the face area was before the shooting instruction is given, the shooting instruction An image pickup apparatus comprising: control means for controlling the display means so as to display the face area before the identification is performed in an identifiable manner.   The control means is a face before the shooting instruction is given when there is no face area after the shooting instruction is given within a predetermined range from the position where the face area was before the shooting instruction is given by the operating means. The imaging apparatus according to claim 1, wherein a warning is given by displaying the area on the display unit in an identifiable manner.   When the face area cannot be detected after the shooting instruction is given at the position where the face area was before the shooting instruction is given by the operation means, the control means determines the face area before the shooting instruction is given. The image pickup apparatus according to claim 1, wherein a warning is given by displaying the display unit so as to be identifiable. The display means displays a frame in the face area detected by the face detection means;
The imaging apparatus according to claim 2 or 3, wherein the control unit performs the warning by changing at least one of a form and a color of a frame of a face area before the photographing instruction is given. The display means displays a frame in the face area detected by the face detection means;
5. The imaging apparatus according to claim 2, wherein the control unit performs the warning by blinking a frame of a face area before the photographing instruction is given.   6. The imaging apparatus according to claim 2, wherein the display unit enlarges and displays a warning-displayed face area in accordance with a predetermined operation instruction.   The imaging apparatus according to claim 6, wherein the display unit enlarges and displays a face area displayed as a warning regardless of the predetermined operation instruction. Imaging means for imaging a subject and generating image data;
Operating means for receiving an instruction to shoot a subject by the imaging means from a user;
A display means for displaying image data picked up by the image pickup means, and a control method for the image pickup apparatus,
An image captured by the imaging means after detecting a human face area included in the image data imaged by the imaging means before the imaging instruction is given by the operating means, and after the imaging instruction is given by the operating means A face detection step for detecting a human face area included in the data;
Compare the image data before and after the shooting instruction is given by the operation means, and if there is no face area after the shooting instruction is given at the position where the face area was before the shooting instruction is given, the shooting instruction And a control step of controlling the display means so as to display the face area before the identification is performed in an identifiable manner.   A program for causing a computer of an imaging apparatus to execute the control method according to claim 8.

Images