WO2022064648A1 - 画像取得装置、画像取得方法および記録媒体 - Google Patents

画像取得装置、画像取得方法および記録媒体 Download PDF

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Publication number
WO2022064648A1
WO2022064648A1 PCT/JP2020/036359 JP2020036359W WO2022064648A1 WO 2022064648 A1 WO2022064648 A1 WO 2022064648A1 JP 2020036359 W JP2020036359 W JP 2020036359W WO 2022064648 A1 WO2022064648 A1 WO 2022064648A1
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WIPO (PCT)
Prior art keywords
image
face
image acquisition
notification
acquisition device
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Ceased
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PCT/JP2020/036359
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English (en)
French (fr)
Japanese (ja)
Inventor
昂右 吉田
伸寿 高橋
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NEC Corp
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NEC Corp
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Priority to JP2022551531A priority Critical patent/JP7772452B2/ja
Priority to PCT/JP2020/036359 priority patent/WO2022064648A1/ja
Publication of WO2022064648A1 publication Critical patent/WO2022064648A1/ja
Anticipated expiration legal-status Critical
Priority to JP2024221011A priority patent/JP2025038123A/ja
Ceased legal-status Critical Current

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    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q50/00—Information and communication technology [ICT] specially adapted for implementation of business processes of specific business sectors, e.g. utilities or tourism
    • G06Q50/10—Services

Definitions

  • the present invention relates to an image acquisition device, an image acquisition method, and a recording medium.
  • Patent Document 1 describes an automatic ID photo machine for taking a facial photo image that meets the requirements for facial photographs specified in the application procedure. Has been done. This automatic ID photo machine notifies the applicant by image or voice of the requirements at the time of shooting, such as "Please take off your hat” or "Please face the front" before taking a face photo image. do.
  • this automatic ID photo machine determines whether or not the face image detected from the face photo image meets the face image requirements. If all the face image requirements are not met, the automatic ID photo machine notifies the applicant of the contents of the face image requirements that are not met by image or voice, and takes the face photo image again.
  • a standard for a face image it may take time to obtain a face image that meets the standard, for example, if the obtained face image does not meet the standard, it may be necessary to take a picture again. It is preferable that the time required to obtain a facial image satisfying the standard is short.
  • An example of an object of the present invention is to provide an image acquisition device, an image acquisition method, and a recording medium capable of solving the above problems.
  • the image acquisition device satisfies the image acquisition means for acquiring a plurality of face images and the standard defined according to the purpose of use of the face image among the plurality of face images. It is provided with an image selection means for selecting a face image.
  • the image acquisition method is to acquire a plurality of face images and to satisfy the standard specified according to the purpose of use of the face image among the plurality of face images. To select and include.
  • the recording medium satisfies the standard defined by acquiring a plurality of facial images on a computer and using the facial images among the plurality of facial images. It is a recording medium for recording a program for selecting and executing a facial image.
  • FIG. 1 is a schematic configuration diagram showing a configuration example of a license renewal system according to an embodiment.
  • the license renewal system 10 includes a license renewal server device 100 and an image acquisition device 200.
  • the license renewal server device 100 and the image acquisition device 200 communicate with each other via the communication network 900.
  • the license renewal system 10 is a system for renewing a driver's license.
  • the license renewal target person can perform a part of the license renewal procedure in advance by using the image acquisition device 200.
  • the prior point here is before going to a facility for renewing a license, such as a license center, and performing the license renewal procedure.
  • a driver's license renewal target person can take a driver's license face image using the image acquisition device 200.
  • the driver's license face image is a face image used for the driver's license after the driver's license is renewed.
  • the license renewal server device 100 determines whether or not the license renewal target person who has performed the license renewal procedure satisfies the conditions for license renewal. If it is determined that the conditions are satisfied, the license renewal server device 100 issues a license after renewal of the license. When a license renewal target person takes a license photograph using the image acquisition device 200, the license renewal server device 100 acquires a driver's license face image from the image acquisition device 200 and issues a license after renewal of the license. do.
  • the license renewal server device 100 may be configured by using a computer such as a workstation or a personal computer (PC).
  • the image acquisition device 200 is a device used by a license renewal target person. As described above, a part of the procedure for renewing the license can be performed in advance using the image acquisition device 200. A user who is a license renewal target can take a driver's license face image using the image acquisition device 200. Further, the image acquisition device 200 determines whether or not the captured face image satisfies the standard of the driver's license face image. For example, the image acquisition device 200 may determine whether or not the captured face image satisfies all of the following standards.
  • the background is colorless.
  • the person to be photographed is facing the front.
  • the photographed person does not wear a hat.
  • the image has not been processed.
  • the facial expression is expressionless.
  • -The size of the face image (the size of the entire image including the part other than the image of the face) is a predetermined size.
  • the size of the face image is 3 cm in length and 2.4 cm in width.
  • -The size of the face image among the face images is a predetermined size.
  • the height and width of the facial image are each within a predetermined range.
  • -The photographed person is not using color contact lenses.
  • the standard to be determined by the image acquisition device 200 is not limited to a specific one.
  • Various standards can be set as the standards to be determined by the image acquisition device 200 according to the standards required in the procedure for submitting the face image.
  • the image acquisition device 200 may determine whether or not the captured face image satisfies the standard for only some of the above standards. In this way, the image acquisition device 200 may determine whether or not it satisfies at least one of the above standards.
  • the image acquisition device 200 selects a face image determined to satisfy the standard from the acquired plurality of face images.
  • the image acquisition device 200 may present the plurality of face images to the user and have the user select any one of the face images.
  • the image acquisition device 200 may present to the user the reason why the face image that does not satisfy the conditions for the driver's license face image does not meet the standard for the driver's license face image.
  • the image acquisition device 200 may be configured by using a smartphone owned by a license renewal target person.
  • the function of preliminarily performing a part of the procedure for renewing the license of the image acquisition device 200 may be executed by the smartphone executing the application program for the preprocedure for renewing the license.
  • the configuration of the image acquisition device 200 is not limited to the configuration using a smartphone.
  • an illumination camera may be used as the image acquisition device 200.
  • a computer other than a smartphone such as a tablet terminal or a personal computer owned by a license renewal target person, may be provided with a camera to configure the image acquisition device 200.
  • the communication network 900 mediates communication between the license renewal server device 100 and the image acquisition device 200.
  • the communication network 900 is not limited to a specific type of communication network, and may be various types of communication networks depending on the license renewal server device 100 and the image acquisition device 200.
  • the communication network 900 is a wireless communication network by the access point, the Internet, and a license renewal server device that connects to the Internet. It may be configured to include a combination with a LAN (Local Area Network) on the 100 side.
  • LAN Local Area Network
  • FIG. 2 is a schematic block diagram showing an example of the functional configuration of the image acquisition device 200.
  • the image acquisition device 200 includes a communication unit 210, a display unit 220, an operation input unit 230, a camera 240, a storage unit 280, and a control unit 290.
  • the control unit 290 includes an image acquisition unit 291, an image selection unit 292, a notification unit 293, a cutting unit 294, and a processing determination unit 295.
  • the communication unit 210 communicates with other devices according to the control of the control unit 290.
  • the communication unit 210 communicates with the license renewal server device 100 via the communication network 900.
  • the display unit 220 includes a display screen such as a liquid crystal panel or an LED (Light Emitting Diode) panel, and displays various images under the control of the control unit 290.
  • the display unit 220 displays various messages to the user.
  • the display unit 220 may display the shot images continuously output by the camera 240 in real time.
  • the operation input unit 230 includes, for example, an input device such as a touch sensor provided on the display screen of the display unit 220 and constitutes a touch panel, and accepts user operations.
  • the camera 240 takes a picture by converting the incident light into image data, and outputs the taken image as image data.
  • the camera 240 captures a face image for a driver's license face image according to the control of the image acquisition unit 291 and outputs the captured still image.
  • the storage unit 280 stores various data.
  • the storage unit 280 is configured by using the storage device included in the image acquisition device 200.
  • the control unit 290 controls each unit of the image acquisition device 200 to perform various processes.
  • the function of the control unit 290 is executed, for example, by the CPU (Central Processing Unit) included in the image acquisition device 200 reading a program from the storage unit 280 and executing the program.
  • CPU Central Processing Unit
  • the image acquisition unit 291 acquires a plurality of face images as face images for a driver's license face image.
  • the image acquisition unit 291 corresponds to an example of an image acquisition means.
  • the image acquisition unit 291 may acquire a face image by taking a picture using the camera 240. Further, the image acquisition unit 291 may acquire the face image by reading the face image already stored in the storage unit 280 in addition to or instead of taking a picture with the camera 240.
  • the image acquisition unit 291 may perform a plurality of shootings with the camera 240 after the notification unit 293 starts the notification to the photographed person who is the user.
  • the notification unit 293 may perform a plurality of shootings with the camera 240 when or after the notification for urging the photographed person to move his / her face.
  • the image acquisition unit 291 can acquire face images of the photographed person's face in various directions, and can acquire a face image facing the front, which is one of the standards for face images for lighting certificates. Be expected.
  • the notification unit 293 may, in addition to or instead of moving the face of the photographed person, give a notification urging the camera 240 to move, such as by moving the image acquisition device 200. Then, while the notification unit 293 is giving this notification, or after giving this notification, the camera 240 may take pictures a plurality of times. As a result, the image acquisition unit 291 can acquire face images of the photographed person's face in various directions, and can acquire a face image facing the front, which is one of the standards for face images for lighting certificates. Be expected.
  • the image acquisition unit 291 may display the captured image continuously output by the camera 240 in real time on the portion of the display screen of the display unit 220 close to the camera 240 when the camera 240 captures the image. As a result, the user who is the photographed person can see the image without shifting the line of sight from the camera 240 and confirm whether or not the driver's license face image can be appropriately photographed.
  • the image acquisition unit 291 may associate the image taken by the camera 240 with meta information such as the shooting date.
  • the image selection unit 292 selects a face image that satisfies the standard of the driver's license face image from the plurality of face images acquired by the image acquisition unit 291.
  • the image selection unit 292 has a face image standard such that the background is colorless, the photographed person is facing the front, the photographed person is not wearing a cap, and the image is Unprocessed, there is a predetermined margin above the image of the photographed person, the photographed person is expressionless, the size of the entire image is a predetermined size, and the height and width of the image of the face are predetermined respectively. It is also possible to select a facial image that meets at least one of the criteria that is within the range of and that the photographed person does not wear a color contact lens.
  • the image selection unit 292 corresponds to an example of the image selection means.
  • the image selection unit 292 may accept the selection of any one face image by the user. For example, the image selection unit 292 may control the display unit 220 to display a plurality of face images satisfying the standard for a driver's license face image. Then, the image selection unit 292 may select any one of the plurality of face images according to the user operation received by the operation input unit 230.
  • the notification unit 293 gives a notification regarding shooting.
  • the notification regarding shooting performed by the notification unit 293 is not limited to a specific type of notification.
  • the notification regarding shooting performed by the notification unit 293 may be a notification of conditions relating to the photographed person, such as the person being photographed being uncapped.
  • the notification regarding shooting performed by the notification unit 293 may be a notification regarding an operation at the time of shooting, such as moving the face of the photographed person or moving the image acquisition device 200.
  • the notification unit 293 corresponds to an example of notification means.
  • the notification unit 293 notifies the user who is the photographed person.
  • a case where the user himself / herself is photographed by using the image acquisition device 200 will be described as an example.
  • the person who operates the image acquisition device 200 and the person to be photographed may be different.
  • a person who operates the image acquisition device 200 is also referred to as a photographer.
  • the notification method performed by the notification unit 293 is not limited to a specific method.
  • the notification unit 293 may cause the display unit 220 to display a message.
  • the notification unit 293 may output the message by voice to the speaker included in the image acquisition device 200 in addition to or instead of displaying the message by the display unit 220.
  • the notification unit 293 gives a notification regarding the shooting when the face image for the driver's license face image is shot.
  • the notification unit 293 may give a notification urging the user to move his / her face.
  • the notification unit 293 may give a notification urging the user to move his / her face left and right.
  • the notification unit 293 may give a notification urging the user to move his / her face up / down / left / right.
  • the notification unit 293 may give a notification urging the user to turn his / her face in a predetermined direction in a predetermined order.
  • the notification unit 293 may switch the direction of the arrow at predetermined time intervals so that the display unit 220 displays the arrow. Then, the notification unit 293 may urge the user to move his / her face in the direction of the arrow at the timing when the arrow is displayed.
  • the notification given by the notification unit 293 to urge the user to move his / her face is not limited to these.
  • the notification unit 293 may give a notification urging the camera 240 to move, such as by moving the image acquisition device 200.
  • the image acquisition unit 291 is intended to present to the user the reason why the face image that does not satisfy the conditions for the license face image does not meet the standard for the license face image. May be good.
  • the cutout unit 294 cuts out a partial image of the face image acquired by the image acquisition unit 291 according to the standard of the driver's license face image.
  • the cutting portion 294 corresponds to an example of the cutting means.
  • the cutout portion 294 performs enlargement / reduction and rotation for tilt correction with respect to the face image.
  • the cutout portion 294 cuts out a partial image having a length of 3 cm and a width of 2.4 cm, which is defined as the size of the driver's license face image.
  • the cutout portion 294 enlarges / reduces, rotates, and partially images the above-mentioned enlargement / reduction, rotation, and partial image so that the obtained image meets the standard of the license face image such as the size of the shoulder width and the overhead margin of the image of the photographed person. Cut out.
  • the cutout portion 294 may make a correction to make the background of the face image colorless.
  • the processing determination unit 295 determines whether or not the image is processed. In particular, when the image acquisition unit 291 acquires a face image already stored in the storage unit 280, the processing determination unit 295 determines whether or not the face image is processed.
  • the camera 240 may capture a user's face image, and the processing determination unit 295 may compare the captured face image with the face image acquired by the image acquisition unit 291 from the storage unit 280. For example, the processing determination unit 295 may compare the relative size and positional relationship of each part of the face such as eyes, nose and mouth. This is expected to be able to detect processing such as morphing in particular.
  • the processing determination unit 295 determines whether or not the brightness of the image is brighter than a predetermined threshold value and whether or not there is a discontinuous portion in the contour of the face. May be good.
  • FIG. 3 is a flowchart showing an example of a processing procedure in which the image acquisition device 200 acquires a face image satisfying the standard.
  • the notification unit 293 gives a notification regarding the shooting of the face image for the driver's license face image (step S101).
  • the notification unit 293 may give a notification urging the user to move his / her face.
  • the notification unit 293 may, or instead, give a notification prompting the camera 240 to move, such as moving the image acquisition device 200.
  • the camera 240 takes pictures a plurality of times according to the control of the image acquisition unit 291 (S102).
  • the image acquisition unit 291 may refer to the captured image of the camera 240 to determine whether or not the user is moving the face, and may cause the camera 240 to continue shooting while the user is moving the face.
  • the image acquisition unit 291 may acquire the face image stored in the storage unit 280 in addition to or instead of the image captured by the camera 240.
  • the cutting unit 294 cuts out a partial image from each of the images obtained in step S102 (step S103). As described above, the cutting unit 294 enlarges / reduces and rotates the image according to the standard of the driver's license face image, and cuts out the face image of the size specified in the standard of the driver's license face image. If a partial image satisfying the standard cannot be obtained, the cutout unit 294 may change to the partial image and output information indicating that the cutout has failed.
  • the processing determination unit 295 determines the presence or absence of processing for each of the partial images (face images) cut out by the cutting unit 294 (step S104). Then, the image selection unit 292 selects a face image that satisfies the standard of the driver's license face image from the face images determined to be unprocessed (step S105). When there are a plurality of face images determined to be face images satisfying the standard of the face image for a license, the image selection unit 292 selects one of the plurality of face images based on the user's selection. You may do it. After step S105, the image acquisition device 200 ends the process of FIG.
  • the image acquisition unit 291 acquires a plurality of face images.
  • the image selection unit 292 selects a face image that satisfies the standard for a licensed face image, which is a standard defined according to the purpose of use of the face image, from among a plurality of face images.
  • the image acquisition device 200 determines whether the standard is satisfied as compared with the method of further acquiring the face image. It is expected that the time will be short because the switching between the determination and the acquisition of the image does not occur repeatedly.
  • the notification unit 293 gives a notification regarding shooting.
  • the image acquisition unit 291 takes pictures with the camera 240 a plurality of times after the notification unit 293 starts the notification.
  • the photographer, the photographed person, or both of them are more likely to obtain a face image satisfying the standard of the face image for a driver's license.
  • the notification unit 293 gives a notification to urge the photographed person to move his / her face.
  • the image acquisition unit 291 can acquire face images of the photographed person's face in various directions, and can acquire a face image facing the front, which is one of the standards for face images for lighting certificates. Be expected.
  • the image acquisition unit 291 shoots a plurality of times with the camera 240 while the notification unit 293 gives a notification urging the photographed person to move his / her face.
  • the image acquisition unit 291 can take a picture at the timing when the photographed person is moving his / her face, and can acquire face images of the photographed person's face in various directions as described above. To.
  • the notification unit 293 gives a notification urging the camera 240 to move.
  • the image acquisition unit 291 can acquire face images of the photographed person's face in various directions, and can acquire a face image facing the front, which is one of the standards for face images for lighting certificates. Be expected.
  • the image acquisition unit 291 takes pictures with the camera 240 a plurality of times while the notification unit 293 gives the notification urging the camera 240 to move.
  • the image acquisition unit 291 can take a picture at the timing when the photographer is moving the camera, and can acquire face images of the photographed person's face in various directions as described above. ..
  • the notification unit 293 notifies the photographed person.
  • the photographed person even when the user is the photographed person, that is, when the user photographs himself / herself, the photographed person follows the notification of the notification unit 293 to satisfy the standard of the face image for the driver's license. The chances of getting a face image are high.
  • the cutout unit 294 cuts out a partial image of the face image according to the standard.
  • the image acquisition device 200 can obtain a face image having a size corresponding to the standard of the face image for the illumination certificate.
  • FIG. 4 is a diagram showing an example of the configuration of the image acquisition device according to the embodiment.
  • the image acquisition device 610 includes an image acquisition unit 611 and an image selection unit 612.
  • the image acquisition unit 611 acquires a plurality of face images.
  • the image selection unit 612 selects a face image satisfying a standard specified according to the purpose of use of the face image from a plurality of face images acquired by the image acquisition unit 611.
  • the image acquisition unit 611 corresponds to an example of an image acquisition means.
  • the image selection unit 612 corresponds to an example of the image selection means.
  • the image acquisition unit 611 By acquiring a plurality of face images by the image acquisition unit 611 in this way, it is expected that the time required to obtain a face image satisfying the standard is short. In particular, when one face image is acquired and it is determined that the obtained face image does not meet the standard, the image acquisition device 610 determines whether the standard is satisfied as compared with the method of further acquiring the face image. It is expected that the time will be short because the switching between the determination and the acquisition of the image does not occur repeatedly.
  • FIG. 5 is a flowchart showing an example of a processing procedure in the image acquisition method according to the embodiment.
  • the image acquisition method shown in FIG. 5 includes acquiring an image (step S611) and selecting an image (step S612).
  • step S611 In acquiring an image (step S611), a plurality of face images are acquired. In selecting an image (step S612), a face image satisfying a standard specified according to the purpose of use of the face image is selected from the plurality of face images obtained in step S611.
  • the standard is compared with the method of acquiring one face image and further acquiring the face image when it is determined that the obtained face image does not satisfy the standard. It is expected that the time will be short because the process of determining whether the condition is satisfied and the process of acquiring the image are not repeatedly switched.
  • FIG. 6 is a schematic block diagram showing the configuration of a computer according to at least one embodiment.
  • the computer 700 includes a CPU 710, a main storage device 720, an auxiliary storage device 730, and an interface 740.
  • any one or more of the above-mentioned image acquisition device 200 and image acquisition device 610 may be mounted on the computer 700.
  • the operation of each of the above-mentioned processing units is stored in the auxiliary storage device 730 in the form of a program.
  • the CPU 710 reads the program from the auxiliary storage device 730, expands it to the main storage device 720, and executes the above processing according to the program. Further, the CPU 710 secures a storage area corresponding to each of the above-mentioned storage units in the main storage device 720 according to the program. Communication between each device and other devices is executed by the interface 740 having a communication function and performing communication according to the control of the CPU 710.
  • the operations of the control unit 290 and each unit thereof are stored in the auxiliary storage device 730 in the form of a program.
  • the CPU 710 reads the program from the auxiliary storage device 730, expands it to the main storage device 720, and executes the above processing according to the program. Further, the CPU 710 secures a storage area corresponding to the storage unit 280 in the main storage device 720 according to the program.
  • Communication by the communication unit 210 is executed when the interface 740 has a communication device and operates according to the control of the CPU 710.
  • the display by the display unit 220 is executed by the interface 740 having a display device and displaying various images according to the control of the CPU 710.
  • the reception of the user operation by the operation input unit 230 is executed by having the interface 740 have an input device and outputting information indicating the received user operation to the CPU 710.
  • the shooting by the camera 240 is executed by the interface 740 including the camera and shooting according to the control of the CPU 710.
  • the operations of the image acquisition unit 611 and the image selection unit 612 are stored in the auxiliary storage device 730 in the form of a program.
  • the CPU 710 reads the program from the auxiliary storage device 730, expands it to the main storage device 720, and executes the above processing according to the program. Further, the CPU 710 secures a storage area in the main storage device 720 for the image acquisition device 610 to perform processing according to the program.
  • the communication performed by the image acquisition device 610 is executed when the interface 740 has a communication device and operates according to the control of the CPU 710.
  • the display performed by the image acquisition device 610 is executed by displaying various images according to the control of the CPU 710, with the interface 740 having the display device.
  • the reception of the user operation by the image acquisition device 610 is executed by having the interface 740 have an input device and outputting information indicating the received user operation to the CPU 710.
  • the shooting by the image acquisition device 610 is executed by the interface 740 provided with a camera and the shooting is performed according to the control of the CPU 710.
  • a program for executing all or part of the processing performed by the image acquisition device 200 and the image acquisition device 610 is recorded on a computer-readable recording medium, and the program recorded on the recording medium is read into the computer system. You may process each part by executing it.
  • the term "computer system” as used herein includes hardware such as an OS and peripheral devices.
  • the "computer-readable recording medium” includes a flexible disk, a magneto-optical disk, a portable medium such as a ROM (Read Only Memory) and a CD-ROM (Compact Disc Read Only Memory), and a hard disk built in a computer system. It refers to a storage device such as.
  • the above-mentioned program may be for realizing a part of the above-mentioned functions, and may be further realized for realizing the above-mentioned functions in combination with a program already recorded in the computer system.
  • the embodiment of the present invention may be applied to an image acquisition device, an image acquisition method, and a recording medium.
  • License renewal system 100 License renewal server device 200, 610 Image acquisition device 210 Communication unit 220 Display unit 230 Operation input unit 240 Camera 280 Storage unit 290 Control unit 291, 611 Image acquisition unit 292, 612 Image selection unit 293 Notification unit 294 Cutout Part 295 Processing judgment part 900 Communication network

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PCT/JP2020/036359 2020-09-25 2020-09-25 画像取得装置、画像取得方法および記録媒体 Ceased WO2022064648A1 (ja)

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JP2022551531A JP7772452B2 (ja) 2020-09-25 2020-09-25 画像取得装置、画像取得方法およびプログラム
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