JP5190882B2 - Compound eye photographing apparatus, control method therefor, and program - Google Patents

Description

  The present invention relates to a compound eye photographing apparatus that acquires a plurality of images that can be displayed in three dimensions by photographing a subject from different positions, a control method thereof, and a program for causing a computer to execute the control method of the compound eye photographing apparatus. It is.

  It is known that stereoscopic viewing can be performed using parallax by combining a plurality of images and displaying them three-dimensionally. In such a stereoscopic view, a plurality of images are acquired by photographing the same subject from different positions using a plurality of cameras, and the plurality of images are three-dimensionally obtained using the parallax of the subjects included in the plurality of images. It can be generated by displaying.

  In addition, a compound eye camera having a plurality of photographing units that performs photographing for performing such three-dimensional display has been proposed. Such a compound eye camera includes a plurality of photographing units arranged at predetermined intervals, generates a three-dimensional display image from images acquired by the plurality of photographing units, and uses the generated three-dimensional display image as a monitor. Three-dimensional display is possible.

In such a compound-eye camera, if the photographing conditions such as the focal positions and the exposures in the plurality of photographing units do not match, the brightness is different between the plurality of images or the subject to be focused is different. When performing this, stereoscopic viewing cannot be performed appropriately. For this reason, there has been proposed a method for detecting the focal position of each imaging unit using overlapping regions in images captured by a plurality of imaging units (see Patent Document 1). In addition, a technique has been proposed in which a focusing operation of one imaging unit among a plurality of imaging units is performed, and a focusing operation similar to that of the one imaging unit is performed for the other imaging units (see Patent Document 2). ).
JP-A-7-67023 JP-A-7-15749

  However, in the method described in Patent Document 1, when a plurality of subjects are included in the angle of view of each photographing unit, if the overlapping range of images captured by each photographing unit is large, the plurality of subjects are included in the overlapping range. There is a possibility. In such a case, the focus position may be determined so that a different subject is focused on each photographing unit. Further, in the method described in Patent Document 2, the focal position of one imaging unit and the focal position of another imaging unit may not necessarily match due to individual differences in optical systems between imaging units. In such a photographing unit, there is a possibility that the same subject as one photographing unit is not focused.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to make it possible to determine photographing conditions using a common subject in a compound eye photographing apparatus including a plurality of photographing units.

A compound eye photographing device according to the present invention includes a plurality of photographing means for obtaining a plurality of images that can be three-dimensionally displayed by photographing at different positions;
Subject detection means for detecting a predetermined subject from each of the plurality of images acquired by the plurality of photographing means for determining photographing conditions;
When a plurality of the predetermined subjects are detected from each of the plurality of images, a reference for determining the photographing condition for one predetermined subject detected from a reference image serving as a reference among the plurality of images A feature point detection means for determining a subject and detecting at least one feature point in the reference subject;
Subject determination means for determining a corresponding subject corresponding to the reference subject by searching for a corresponding point corresponding to the feature point in the predetermined subject detected from an image other than the reference image;
An imaging condition determining unit that determines the imaging condition of each of the plurality of imaging units based on the reference subject and the corresponding subject is provided.

  The “feature point” represents a characteristic unique to a predetermined subject. For example, when the predetermined subject is a face, the left and right eye heads, the left and right eye corners, and the left and right mouth corners can be used as feature points. In addition, a region including an edge included in a predetermined subject can be used as a feature point.

  In the compound eye photographing apparatus according to the present invention, when the photographing condition is a focal position, the photographing condition determining unit is configured to focus each of the plurality of photographing units so as to focus on the reference subject and the corresponding subject. It may be a means for determining the focal position.

  Further, in the compound eye photographing apparatus according to the present invention, when the photographing condition is an exposure condition, the photographing condition determining means includes the plurality of photographing means so that the reference subject and the corresponding subject have a predetermined brightness. It is good also as a means to determine each exposure value.

  In the compound eye photographing apparatus according to the present invention, the predetermined subject may be a human face.

The method for controlling a compound eye photographing apparatus according to the present invention obtains a plurality of images that can be three-dimensionally displayed by photographing at different positions.
Detecting a predetermined subject from each of the plurality of images acquired by the plurality of photographing means to determine a photographing condition;
When a plurality of the predetermined subjects are detected from each of the plurality of images, a reference for determining the photographing condition for one predetermined subject detected from a reference image serving as a reference among the plurality of images Decide on the subject,
Detecting at least one feature point in the reference subject;
Determining a corresponding subject corresponding to the reference subject by searching for a corresponding point corresponding to the feature point in the predetermined subject detected from an image other than the reference image;
The imaging conditions of each of the plurality of imaging units are determined based on the reference subject and the corresponding subject.

  In addition, you may provide as a program for making a computer perform the control method of the compound eye imaging device by this invention.

  According to the present invention, when a predetermined subject is detected from each of a plurality of images acquired by a plurality of imaging units to determine a shooting condition, and a plurality of predetermined subjects are detected from each of the plurality of images, a plurality of subjects are detected. One predetermined subject detected from a reference image serving as a reference among the images is determined as a reference subject for determining shooting conditions. Then, at least one feature point in the reference subject is detected, and in a predetermined subject detected from another image other than the reference image, a corresponding point corresponding to the feature point is searched, thereby corresponding to the reference subject in another image. The corresponding subject is determined, and the photographing conditions of the plurality of photographing means are determined based on the reference subject and the corresponding subject. As a result, the photographing conditions are determined by using a common subject in each photographing means. Therefore, in the image acquired by each photographing means, the focus position is adjusted to the common subject or the exposure of the common subject is matched. Can be. Therefore, when a three-dimensional display is performed using a plurality of images, the common subject can be stereoscopically viewed satisfactorily.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a schematic block diagram showing an internal configuration of a compound eye camera to which a compound eye photographing apparatus according to an embodiment of the present invention is applied. As shown in FIG. 1, the compound-eye camera 1 according to this embodiment includes two photographing units 21A and 21B, a photographing control unit 22, an image processing unit 23, a compression / decompression processing unit 24, a frame memory 25, a media control unit 26, an internal A memory 27 and a display control unit 28 are provided. The photographing units 21A and 21B are arranged so as to photograph a subject with a predetermined baseline length and convergence angle.

  FIG. 2 is a diagram illustrating the configuration of the photographing units 21A and 21B. As shown in FIG. 2, the photographing units 21A and 21B include focus lenses 10A and 10B, zoom lenses 11A and 11B, diaphragms 12A and 12B, shutters 13A and 13B, CCDs 14A and 14B, analog front ends (AFE) 15A and 15B, and A / D converters 16A and 16B are provided. The photographing units 21A and 21B also include focus lens driving units 17A and 17B that drive the focus lenses 10A and 10B, zoom lens driving units 18A and 18B that drive the zoom lenses 11A and 11B, and diaphragms that drive the apertures 12A and 12B. Drive units 19A and 19B are provided.

  The focus lenses 10A and 10B are for focusing on a subject, and can be moved in the optical axis direction by focus lens driving units 17A and 17B including a motor and a motor driver. The focus lens driving units 17A and 17B control the movement of the focus lenses 10A and 10B based on the focusing data representing the focal position determined by the AF process performed by the imaging control unit 22 described later.

  The zoom lenses 11A and 11B are for realizing a zoom function, and can be moved in the optical axis direction by zoom lens driving units 18A and 18B including a motor and a motor driver. The zoom lens driving units 18A and 18B control the movement of the zoom lenses 11A and 11B based on an instruction from the CPU 34 when a zoom lever (not shown) is operated.

  In the apertures 12A and 12B, the aperture diameters are adjusted by the aperture drivers 19A and 19B based on aperture value data obtained by the AE process performed by the imaging control unit 22.

  The shutters 13A and 13B are mechanical shutters, and are driven by a shutter driving unit (not shown) according to the shutter speed obtained by the AE process.

  The CCDs 14A and 14B have a photoelectric surface in which a large number of light receiving elements are two-dimensionally arranged, and subject light is imaged on the photoelectric surface and subjected to photoelectric conversion to obtain an analog photographing signal. In addition, color filters in which R, G, and B color filters are regularly arranged are arranged on the front surfaces of the CCDs 14A and 14B.

  The AFEs 15A and 15B perform processing for removing noise of the analog photographing signal and processing for adjusting the gain of the analog photographing signal (hereinafter referred to as analog processing) for the analog photographing signals output from the CCDs 14A and 14B.

  The A / D converters 16A and 16B convert the analog photographing signals subjected to the analog processing by the AFEs 15A and 15B into digital signals. Note that an image represented by digital image data acquired by the photographing unit 21A is a first image G1, and an image represented by image data acquired by the photographing unit 21B is a second image G2.

  The imaging control unit 22 includes an AF processing unit 22A and an AE processing unit 22B. The AF processing unit 22A determines the focus area on the pre-image and the focus based on the pre-image acquired by the photographing units 21A and 21B performing pre-photographing by half-pressing the release button included in the input unit 35. The focal positions of the lenses 10A and 10B are determined and output to the photographing units 21A and 21B. The AE processing unit 22B determines the aperture value and the shutter speed as the exposure value based on the pre-image, and outputs them to the photographing units 21A and 21B.

  In addition, the shooting control unit 22 instructs the shooting units 21A and 21B to perform main shooting for acquiring the main images of the first and second images G1 and G2 by fully pressing the release button. Before the release button is operated, the shooting control unit 22 displays a through image having a smaller number of pixels than the first and second images G1 and G2 for allowing the shooting unit 21A to check the shooting range. Then, an instruction to sequentially acquire at a predetermined time interval (for example, 1/30 second interval) is given.

  Note that the AF processing unit 22A of the shooting control unit 22 performs AF processing even during shooting of a through image. The AF process in this case is performed by simple calculation as compared with the AF process based on the pre-image.

  The image processing unit 23 adjusts white balance, gradation correction, sharpness correction, and color correction on the digital image data of the first and second images G1 and G2 acquired by the imaging units 21A and 21B. Etc. are applied. It should be noted that reference numerals G1 and G2 before processing are also used for the first and second images after processing in the image processing unit 23.

  The compression / decompression processing unit 24 is processed by the image processing unit 23, and a three-dimensional display image generated from the main images of the first and second images G1 and G2 for three-dimensional display as will be described later. Is compressed in a compression format such as JPEG, and a three-dimensional image file for three-dimensional display is generated. The three-dimensional image file includes image data of the first and second images G1 and G2 and image data of a three-dimensional display image. In addition, a tag in which incidental information such as shooting date and time is stored is assigned to the image file based on the Exif format or the like.

  The frame memory 25 is used when various processes including the process performed by the image processing unit 23 described above are performed on the image data representing the first and second images G1 and G2 acquired by the imaging units 21A and 21B. This is a working memory.

  The media control unit 26 accesses the recording medium 29 and controls writing and reading of a 3D image file or the like.

  The internal memory 27 stores various constants set in the compound-eye camera 1, a program executed by the CPU 34, and the like.

  The display control unit 28 two-dimensionally displays the first and second images G1 and G2 stored in the frame memory 25 at the time of shooting on the monitor 20 or the first and second images recorded on the recording medium 29. The images G1 and G2 are displayed two-dimensionally on the monitor 20. In addition, the display control unit 28 displays the first and second images G1 and G2 that have been subjected to the three-dimensional processing as described later on the monitor 20 in a three-dimensional manner or the three-dimensional image recorded in the recording medium 29. It is also possible to display the file on the monitor 20 three-dimensionally. The switching between the two-dimensional display and the three-dimensional display may be performed automatically, or may be performed by an instruction from the photographer using the input unit 35 described later. Here, when the three-dimensional display is performed, the through images of the first and second images G1 and G2 are three-dimensionally displayed on the monitor 20 until the release button is pressed.

  When the display mode is switched to the three-dimensional display, both the first and second images G1 and G2 are used for display as described later, and when the display mode is switched to the two-dimensional display, the first and second images are used. One of the second images G1 and G2 is used for display.

  Further, the compound eye camera 1 according to the present embodiment includes a three-dimensional processing unit 30. The three-dimensional processing unit 30 performs three-dimensional processing on the first and second images G1 and G2 in order to display the first and second images G1 and G2 on the monitor 20 in three dimensions. Here, as the three-dimensional display in the present embodiment, any known method can be used. For example, the first and second images G1 and G2 are displayed side by side and stereoscopically viewed by the naked eye balance method, or a lenticular lens is attached to the monitor 20 and the images G1 and G2 are placed at predetermined positions on the display surface of the monitor 20. By displaying the lenticular method, it is possible to use a lenticular method in which the first and second images G1 and G2 are incident on the left and right eyes to realize three-dimensional display. Further, the optical path of the backlight of the monitor 20 is optically separated so as to correspond to the left and right eyes, and the first and second images G1 and G2 are separated on the display surface of the monitor 20 to the left and right of the backlight. By alternately displaying in accordance with the above, it is possible to use a scan backlight system that realizes three-dimensional display.

  The monitor 20 is processed according to a three-dimensional display method. For example, when the three-dimensional display method is the lenticular method, a lenticular lens is attached to the display surface of the monitor 20, and when the scan backlight method is used, an optical element for changing the light beam direction of the left and right images. Is attached to the display surface of the monitor 20.

  The compound eye camera 1 according to the present embodiment includes a face detection unit 31, a feature point detection unit 32, and a subject determination unit 33.

  The face detection unit 31 detects a face from the first and second images G1 and G2 by a template matching method or a method using a face discriminator obtained by machine learning learning using a large number of sample images of a face. An area of a predetermined range surrounding the detected face is detected as a face area. Here, the face area is an area used for determining the photographing condition for adjusting the brightness of the face appropriately or focusing on the face by the AE process and the AF process. When the first and second images G1 and G2 include a plurality of persons, the face detection unit 31 detects all face regions.

  When the face detection unit 31 detects a plurality of face regions from one image, the feature point detection unit 32 detects a plurality of features detected from the first image G1 serving as a reference among the first and second images G1 and G2. One of the face areas is determined as a reference face area, and the positions of main facial parts constituting the face from the reference face area are detected as face feature points. Here, the feature point detection unit 32 determines the face area located at the center or the largest face area of the first image G1 as the reference face area. In the present embodiment, the face area located closest to the center of the image G1 is determined as the reference face area. For example, as shown in FIG. 3, when three face areas F1 to F3 are detected from the first image G1, the face area F3 located closest to the center is determined as the reference face area BF0.

  Note that the feature point detection unit 32, specifically, for each facial part obtained by a template matching method using each facial part template or machine learning learning using a large number of sample images of facial parts. For example, by using a discriminator or the like, the positions of a total of six feature points, for example, left and right eyes, left and right eye corners, and left and right mouth corners, are detected as feature points. For example, as shown in FIG. 3, six feature points T1 to T6 are detected from the face area F3 which is the reference face area BF0. In addition to these six feature points, left and right noses and upper lips may be added to the feature points.

  The subject determining unit 33 sequentially searches corresponding points corresponding to the feature points T1 to T6 included in the reference face region BF0 with respect to all the face regions detected from the second image G2, and the corresponding points are searched. The determined face area is determined as the corresponding face area CF0 corresponding to the reference face area BF0. For example, as shown in FIG. 4, when three face areas F11 to F13 are detected from the second image G2, corresponding points corresponding to the feature points T1 to T6 are searched in order from the face area F11 located on the left side. . The search for corresponding points is performed by cutting out a region in a predetermined range centering on the feature points T1 to T6 from the reference face region BF0, using the cut out region as a template, performing template matching with each of the face regions F11 to F13, and performing correlation. This is performed by searching for pixels on the face regions F11 to F13 whose values are equal to or greater than a predetermined threshold value.

  Here, as shown in FIG. 4, when face areas F11 to F13 are detected from the second image G2, the face area closest to the center is the face area F12, but corresponds to the reference face area BF0. Corresponding face area CF0 is face area F13. If the corresponding point is not detected, the subject determining unit 33 determines the face region F12 closest to the center in the second image G2 as the corresponding face region CF0.

  The subject determining unit 33 outputs information representing the positions of the reference face region BF0 and the corresponding face region CF0 to the imaging control unit 22. The shooting control unit 22 determines shooting conditions at the time of actual shooting of the shooting units 21A and 21B based on the reference face region BF0 and the corresponding face region CF0. Specifically, the AF processing unit 22A of the imaging control unit 22 focuses on the reference face region BF0 in the first image G1 and the corresponding face region CF0 in the second image G2, so that the imaging units 21A and 21B The focal positions of the focus lenses 10A and 10B are determined. Further, the AE processing unit 22B of the photographing control unit 22 makes the brightness of the reference face region BF0 in the first image G1 and the corresponding face region CF0 in the second image G2 become predetermined predetermined brightness. An exposure value, that is, an aperture value and a shutter speed are determined.

  The CPU 34 controls each part of the compound eye camera 1 according to a signal from the input part 35 including a release button and the like.

  The data bus 36 is connected to each unit constituting the compound eye camera 1 and the CPU 34, and exchanges various data and various information in the compound eye camera 1.

  Next, processing performed in the present embodiment will be described. FIG. 5 is a flowchart showing processing performed in the present embodiment. Since the present invention is characterized by the process of determining the shooting conditions using the pre-images of the first and second images G1 and G2, in the following description, the shooting conditions are determined by shooting the pre-image. Only the processing up to this point will be described.

  The release button is pressed halfway down, and the photographing units 21A and 21B acquire pre-images of the first and second images G1 and G2, whereby the CPU 34 starts processing. First, the face detection unit 31 first and first A face area is detected from the two images G1 and G2 (step ST1). Next, the CPU 34 determines whether or not a plurality of face areas have been detected from the images G1 and G2 (step ST2), and if step ST2 is negative, outputs information to that effect to the imaging control unit 22. The shooting control unit 22 determines shooting conditions based on the first and second images G1 and G2 (step ST3), and ends the process.

  If step ST2 is affirmed, the feature point detection unit 32 determines a reference face region BF0 to be a reference among the plurality of face regions detected from the first image G1 (step ST4), and the reference face region BF0. Feature points T1 to T6 are detected (step ST5). Next, the subject determination unit 33 determines the face area to be processed among the plurality of face areas detected from the second image G1 as the first face area (step ST6), and corresponds to the feature points T1 to T6. The corresponding point to be searched is searched (step ST7). Then, it is determined whether or not corresponding points have been searched (step ST8). If step ST8 is negative, it is determined whether or not searching for corresponding points has been completed for all face regions (step ST9). Is denied, the processing target is changed to the next face area (step ST10), and the process returns to step ST7.

  If step ST8 is affirmed, the face area currently being processed is determined as the corresponding face area CF0 corresponding to the reference face area BF0 (step ST11), and the positions of the reference face area BF0 and the corresponding face area CF0 are determined. Information to be output is output to the imaging control unit 22. The shooting control unit 22 determines shooting conditions based on the reference face area BF0 of the first image G1 and the corresponding face area CF0 of the second image G2 (step ST12), and ends the process.

  If step ST9 is affirmed, the corresponding face area CF0 corresponding to the reference face area BF0 does not exist in the second image G2, so that the subject determination unit 33 has the face closest to the center in the second image G2. The area is determined as the corresponding face area CF0 (step ST13), and information indicating the positions of the reference face area BF0 and the corresponding face area CF0 is output to the imaging control unit 22. The imaging control unit 22 performs the process of step ST12 and ends the process.

  As described above, according to the present embodiment, the reference face area BF0 serving as a reference among the face areas detected from the first image G1 acquired by the pre-photographing is determined, and the feature points T1 to T1 are determined from the reference face area BF0. A reference face is detected in the second image G2 by detecting T6 and searching for corresponding points corresponding to the feature points T1 to T6 in the face area detected from the second image G2 obtained by pre-shooting. The corresponding face area CF0 corresponding to the area BF0 is determined, and based on the reference face area BF0 and the corresponding face area CF0, shooting conditions at the time of actual shooting of the shooting units 21A and 21B are determined. For this reason, in the photographing units 21A and 21B, photographing conditions are determined using a common subject, and as a result, the main images of the first and second images G1 and G2 acquired by the photographing units 21A and 21B. In, the focus position can be adjusted to a common subject, and the exposure of the common subject can be matched. Therefore, when a three-dimensional display is performed using a plurality of images, the common subject can be stereoscopically viewed satisfactorily.

  In the above-described embodiment, the two-eye camera 1 is provided with the two photographing units 21A and 21B, and three-dimensional display is performed using the two images G1 and G2, but three or more photographing units are provided. The present invention can also be applied to the case where three-dimensional display is performed using these images. In this case, the reference face area BF0 is determined using one image as a reference image among a plurality of images acquired by three or more photographing units, and the corresponding face area CF0 is sequentially determined for the other images. That's fine.

  In the above embodiment, the face area is detected. However, when a subject other than the face such as a car or an animal face is detected, and a plurality of subjects are detected in the first and second images G1 and G2, respectively. In addition, the reference subject and the corresponding subject may be determined in the same manner as described above, and the shooting conditions may be determined based on the reference subject and the corresponding subject.

  In the above embodiment, the shooting conditions are determined using the pre-images of the first and second images G1 and G2 acquired by the pre-shooting. However, the shooting conditions are determined as in moving image shooting. In the case of dynamically performing the shooting, a shooting condition may be determined using a through image.

  Although the embodiment of the present invention has been described above, the computer is caused to function as a unit corresponding to the face detection unit 31, the feature point detection unit 32, and the subject determination unit 33, and the process shown in FIG. 5 is performed. A program is also one embodiment of the present invention. A computer-readable recording medium in which such a program is recorded is also one embodiment of the present invention.

1 is a schematic block diagram showing an internal configuration of a compound eye camera to which a compound eye photographing apparatus according to an embodiment of the present invention is applied. Diagram showing the configuration of the shooting unit The figure for demonstrating the detection of the face area | region and feature point in a 1st image The figure for demonstrating the detection of the face area | region in a 2nd image A flowchart showing processing performed in the present embodiment

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Compound eye camera 21A, 21B Image pick-up part 22 Image pick-up control part 28 Display control part 30 Three-dimensional processing part 31 Face detection part 32 Feature point detection part 33 Subject determination part

Claims (3)

A plurality of photographing means for obtaining a plurality of images capable of three-dimensional display by photographing at different positions;
Subject detection means for detecting a predetermined subject, which is a person's face, from each of the plurality of images acquired by the plurality of photographing means for determining photographing conditions;
When a plurality of the predetermined subjects are detected from each of the plurality of images, a reference for determining the photographing condition for one predetermined subject detected from a reference image serving as a reference among the plurality of images A feature point detection means for determining a subject and detecting at least one feature point in the reference subject;
Subject determination means for determining a corresponding subject corresponding to the reference subject by searching for a corresponding point corresponding to the feature point in the predetermined subject detected from an image other than the reference image;
After determining the reference subject and the corresponding subject, when determining the shooting condition of each of the plurality of photographing means based on the reference subject and the corresponding subject, when the shooting condition is a focal position, A compound eye photographing apparatus comprising: photographing condition determining means for determining a focal position of each of the plurality of photographing means so as to focus on a reference subject and the corresponding subject . By capturing images at different positions, a plurality of images that can be displayed in three dimensions are obtained,
Detecting a predetermined subject that is a person's face from each of the plurality of images acquired by the plurality of photographing means to determine photographing conditions;
When a plurality of the predetermined subjects are detected from each of the plurality of images, a reference for determining the photographing condition for one predetermined subject detected from a reference image serving as a reference among the plurality of images Decide on the subject,
Detecting at least one feature point in the reference subject;
Determining a corresponding subject corresponding to the reference subject by searching for a corresponding point corresponding to the feature point in the predetermined subject detected from an image other than the reference image;
After determining the reference subject and the corresponding subject, when determining the shooting condition of each of the plurality of photographing means based on the reference subject and the corresponding subject, when the shooting condition is a focal position, A control method for a compound eye photographing apparatus , wherein a focal position of each of the plurality of photographing means is determined so as to focus on a reference subject and the corresponding subject . A procedure for acquiring a plurality of images that can be displayed in three dimensions by shooting at different positions;
A procedure for detecting a predetermined subject that is a face of a person from each of the plurality of images acquired by the plurality of photographing means to determine a photographing condition;
When a plurality of the predetermined subjects are detected from each of the plurality of images, a reference for determining the photographing condition for one predetermined subject detected from a reference image serving as a reference among the plurality of images The procedure to determine the subject,
Detecting at least one feature point in the reference subject;
Determining a corresponding subject corresponding to the reference subject by searching for a corresponding point corresponding to the feature point in the predetermined subject detected from an image other than the reference image;
After determining the reference subject and the corresponding subject, when determining the shooting condition of each of the plurality of photographing means based on the reference subject and the corresponding subject, when the shooting condition is a focal position, A program for causing a computer to execute a control method of a compound eye photographing apparatus including a procedure for determining a focal position of each of the plurality of photographing means so as to focus on a reference subject and the corresponding subject .

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