Shooting device and program

Abstract

To provide an imaging terminal, configured to improve convenience of identity verification.SOLUTION: A user terminal 5 is an imaging terminal which images an ID card. The user terminal 5 includes: display means 501 for displaying an imaging frame indicating proper position of the ID card on an imaging screen for the ID card; acquisition means 502 which acquires an image of the ID card displayed on the imaging screen; and transmission means 503 which transmits the image of the ID card to a server 3 which determines authenticity of the ID card using the image. The display means 501 displays, on the imaging screen, a side of the imaging frame corresponding to a position of a side of the ID card so as to be discriminated from a side of the imaging frame not corresponding to the position of the side of the ID card.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] The present invention relates to a photographing terminal for photographing personal identification authentication and its program.

Background Art

[0002] In financial institutions, it is necessary to confirm the identity of a person by using an ID card (personal identification authentication) such as a My Number card when opening an account. In recent years, cases of forging or altering ID cards in order to open an account by impersonating someone else for criminal purposes such as fraud have been increasing, and it is required to detect such forged or altered ID cards when confirming the identity of a person.

[0003] In ordinary financial institutions, it is common for a user to visit the financial institution and submit an ID card, and for the financial institution side to confirm the identity of the person face-to-face using the submitted ID card. In this case, the person in charge can carefully observe the ID card and can also detect any unnaturalness by the touch of the card.

[0004] On the other hand, recently, financial institutions on the Internet such as online banks have become common. In this type of financial institution, there are cases where the face of an ID card is photographed with a camera such as a smartphone and the image is sent to the financial institution to confirm the identity of the person. In Patent Documents 1 and 2, an example of a method for determining the authenticity of an ID card from an image of an ID card photographed with a camera such as a smartphone in such a case is disclosed. [[ID= XXI]]

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0006] For authenticating an ID card, it is crucial that the ID card is photographed properly. For example, if the ID card and camera are not parallel, the image of the ID card will be distorted, which will negatively impact the accuracy of the authenticity determination. Correcting distortion through image manipulation is also not advisable, as it may affect the outcome of the authenticity determination.

[0007] In this regard, Patent Document 1 describes a method for photographing ID cards, which involves displaying a shooting frame on the display unit of a smartphone or the like, prompting the user to place the ID card within the shooting frame, and ensuring that the ID card is photographed correctly. However, users may take too long to place the ID card within the shooting frame, or may be unable to place the ID card within the frame properly, which hinders the convenience of identity verification.

[0008] This invention has been made in view of the above-mentioned problems, and aims to provide a camera terminal or the like that can improve the convenience of identity verification. [Means for solving the problem]

[0009] The first invention for solving the aforementioned problems is a photographing terminal for photographing an identification document, comprising a display means that provides an auxiliary display indicating the correct placement of the identification document on the photographing screen, wherein the display means displays the portion of the auxiliary display corresponding to the position of the identification document in a distinguishable manner from the portion of the auxiliary display that does not correspond to the position of the identification document on the photographing screen. The auxiliary display and the identification document are rectangular in shape, the portion is the side of the auxiliary display, the display means displays the side of the auxiliary display that corresponds to the position of the side of the identification document in the captured screen in a distinguishable manner from the side of the auxiliary display that does not correspond to the position of the side of the identification document, and the display means determines that if the positions of two adjacent corners of the auxiliary display in the circumferential direction coincide with the positions of two corners of the identification document, the side between the two corners of the auxiliary display corresponds to the position of the side of the identification document. This is a camera terminal characterized by the following:

[0010] In this invention, by varying the display modes of the auxiliary displays described above, the portion of the identification document that is in the correct position is displayed in the image capture screen. The user can then use this display as a reference to position the identification document correctly within the capture screen. This simplifies the acquisition of images of the identification document and improves the convenience of identity verification. As described above, by using a rectangular shooting frame as the auxiliary display and clearly indicating which sides of the shooting frame correspond to the sides of the identification document, visibility is improved. In this case, by comparing the positions of the corners of the shooting frame with the positions of the corners of the identification document, if the positions of two adjacent corners of the shooting frame match the positions of two corners of the identification document, then the side between those two corners of the shooting frame can be considered to correspond to the side of the identification document.

[0011] Ma Furthermore, it is desirable that the camera terminal has an acquisition means for acquiring an image of the identification document displayed on the camera screen when the positions of all the corners of the auxiliary display coincide with the positions of the corners of the identification document. As described above By acquiring an image of the identification document when the positions of all the corners of the auxiliary display match the positions of the corners of the identification document, a correctly positioned image of the identification document can be obtained.

[0012] Preferably, the aforementioned camera terminal includes an acquisition means for acquiring an image of the identification document displayed on the camera screen, and a transmission means for transmitting the image of the identification document acquired by the acquisition means to an authenticity determination device that uses the image to determine the authenticity of the identification document. This makes it possible to build a counterfeit verification system using a network that uses images of identification documents transmitted from a camera to determine their authenticity.

[0013] The second invention relates to a photographing terminal for photographing an identification document, the photographing terminal having a display means that displays an auxiliary indication on the photographing screen of the identification document indicating the correct placement of the identification document, wherein the display means displays on the photographing screen, in a way that distinguishes the portion of the auxiliary indication corresponding to the position of the identification document from the portion of the auxiliary indication that does not correspond to the position of the identification document. The auxiliary display and the identification document are rectangular in shape, the portion is the side of the auxiliary display, the display means displays the side of the auxiliary display that corresponds to the position of the side of the identification document in the captured screen in a distinguishable manner from the side of the auxiliary display that does not correspond to the position of the side of the identification document, and the display means determines that if the positions of two adjacent corners of the auxiliary display in the circumferential direction coincide with the positions of two corners of the identification document, the side between the two corners of the auxiliary display corresponds to the position of the side of the identification document. This is a program for enabling a camera terminal to function in a manner characterized by the following: [Effects of the Invention]

[0014] The present invention provides a camera terminal and the like that can improve the convenience of identity verification. [Brief explanation of the drawing]

[0015] [Figure 1] A diagram illustrating the authenticity determination system 1. [Figure 2] A diagram showing the hardware configuration of the authenticity determination device 3. [Figure 3]A diagram showing the hardware configuration of the user terminal 5. [Figure 4] A block diagram showing the functions of the user terminal 5. [Figure 5] A flowchart showing an overview of the processing of the authenticity determination system 1. [Figure 6] An example of a shooting screen of the ID card 10. [Figure 7] A flowchart showing the shooting procedure of the ID card 10. [Figure 8] A diagram for explaining the comparison of the position between the shooting frame 531 and the ID card 10. [Figure 9] An example of a shooting screen of the ID card 10. [Figure 10] An example of a shooting screen of the ID card 10.

Embodiments for Carrying out the Invention

[0016] Hereinafter, preferred embodiments of the present invention will be described in detail based on the drawings.

[0017] (1. Authenticity Determination System 1) FIG. 1 is a diagram showing an authenticity determination system 1 including a user terminal 5 according to an embodiment of the shooting terminal of the present invention. The authenticity determination system 1 is configured by communicably connecting an authenticity determination device 3 and a user terminal 5 via a network. In the authenticity determination system 1, an image of the user's ID card 10 taken by the user terminal 5 is transmitted from the user terminal 5 to the authenticity determination device 3, and the authenticity determination device 3 performs an authenticity determination of the ID card 10 from the image.

[0018] The ID card 10 is an identity verification document subject to authenticity determination by the authenticity determination device 3. The identity verification document refers to a medium used for identity verification by financial institutions, mobile phone carriers, various administrative agencies, etc., and includes a driver's license, a my number card, a residence card, etc. The ID card 10 is square-shaped, and on its face, the user's face image, name, address, date of birth, expiration date of the ID card 10, etc. are printed as face information (not shown).

[0019] Figure 2 shows the hardware configuration of the authenticity determination device 3. The authenticity determination device 3 can be implemented by a computer configured by connecting a control unit 31, a storage unit 32, a communication unit 33, etc., via a bus or the like. However, it is not limited to this, and various configurations can be taken as appropriate, and it is also possible to implement the authenticity determination device 3 using multiple computers.

[0020] The control unit 31 consists of a CPU, ROM, RAM, etc. The CPU calls and executes programs related to the processing of the authenticity determination device 3, which are stored in storage media such as the memory unit 32 and ROM, into a work area on the RAM. ROM is a non-volatile memory that permanently holds programs and data such as the boot program and BIOS. RAM is a volatile memory that temporarily holds programs and data loaded from the memory unit 32, ROM, etc., and also has a work area used by the control unit 31 to perform various processes.

[0021] The storage unit 32 is a hard disk drive, solid-state drive, flash memory, etc., and stores the program executed by the authenticity determination device 3, the data necessary for program execution, the OS, and so on.

[0022] The communication unit 33 is a communication interface that mediates communication over the network and communicates with the user terminal 5.

[0023] User terminal 5 is a device owned by the user, which takes a picture of the ID card 10 to acquire the image and transmits it to the authenticity determination device 3. User terminal 5 functions as the shooting terminal of the present invention, and a mobile device such as a smartphone or tablet can be used.

[0024] Figure 3 shows the hardware configuration of the user terminal 5. As shown in Figure 3, the user terminal 5 is configured by connecting a control unit 51, a storage unit 52, a display unit 53, an input unit 54, a communication unit 55, a camera 56, an audio input / output unit 57, etc., via a bus or the like. However, it is not limited to this, and various configurations can be taken as appropriate.

[0025] The control unit 51, storage unit 52, and communication unit 55 are substantially the same as the control unit 31, storage unit 32, and communication unit 33 described above, and the storage unit 52 stores a dedicated application program for the user terminal 5 to perform the processing described later.

[0026] The display unit 53 has a display device such as an LCD panel, and a touch panel is provided as an input unit 54 for inputting data to the user terminal 5. The audio input / output unit 57 is equipped with a microphone and speaker for inputting and outputting audio.

[0027] Camera 56 is an area camera composed of an optical lens, an image sensor such as a CCD (Charge Coupled Device) or CMOS (Complementary Metal-Oxide Semiconductor), and an A / D (Analog / Digital) conversion unit. Camera 56 receives the subject image input via the optical lens, converts it photoelectrically using the image sensor to generate an analog image signal, and then converts the analog image signal into digital image data using the A / D conversion unit.

[0028] Figure 4 is a block diagram showing the functions of user terminal 5. User terminal 5 includes display means 501, acquisition means 502, transmission means 503, etc.

[0029] The display means 501 is used by the control unit 51 of the user terminal 5 to provide an auxiliary display on the ID card 10's capture screen, indicating the correct placement of the ID card 10. The ID card 10's capture screen and auxiliary display will be described later.

[0030] The acquisition means 502 is a method by which the control unit 51 of the user terminal 5 acquires an image of the ID card 10 displayed on the ID card 10's capture screen.

[0031] The transmission means 503 is used by the control unit 51 of the user terminal 5 to transmit the image of the ID card 10 acquired by the acquisition means 502 to the authenticity determination device 3 via the communication unit 55.

[0032] (2. Outline of the processing of the authenticity determination system 1) Figure 5 is a flowchart illustrating the processes performed by the authenticity determination system 1. In Figure 5, S1-S2 and S7-S8 are processes executed by the control unit 51 of the user terminal 5, which controls various parts of the user terminal 5, while S3-S6 are processes executed by the control unit 31 of the authenticity determination device 3, which controls various parts of the authenticity determination device 3.

[0033] In this embodiment, the user first operates the user terminal 5 to launch a dedicated application program pre-stored in the storage unit 52. The user terminal 5 then displays a menu screen (not shown) on the display unit 53, and activates the camera 56 according to the user's selection on the menu screen to photograph the surface of the ID card 10 (S1).

[0034] Figure 6 shows an example of the ID card 10 shooting screen at this time. In this embodiment, when the camera is started, instructions are displayed on the display unit 53 of the user terminal 5 to prompt the user to place the ID card 10, which is displayed in live view on the shooting screen, within a predetermined shooting frame 531, and the ID card 10 is photographed.

[0035] The shooting frame 531 is an auxiliary indicator that shows the correct placement of the ID card 10. In this embodiment, the position of the shooting frame 531 and the ID card 10 are compared, and the display mode of the shooting frame 531 is changed according to the result, making it easier for the user to correctly photograph the ID card 10 and improving the convenience of identity verification. Details of this method will be described later.

[0036] Returning to the explanation of Figure 5, the user terminal 5 transmits the image obtained by photographing the ID card 10 to the authenticity determination device 3 (S2). The authenticity determination device 3 receives the image of the ID card 10 (S3) and uses the image of the ID card 10 to determine its authenticity (S4). The specific method of authenticity determination is not limited; for example, the methods described in Patent Documents 1 and 2 can be used.

[0037] If the authenticity determination device 3 determines that the ID card 10 is fake (S5; NO), it transmits a message to the user terminal 5 indicating that the ID card 10 is fake (S6). When the user terminal 5 receives the message that the ID card 10 is fake (S7), it displays this on the display unit 53 (S8) and terminates the process.

[0038] On the other hand, if the authenticity determination device 3 determines that the ID card 10 is genuine (S5; YES), it completes the authenticity determination process. For example, when authenticity determination is performed as identity verification when opening an account at an online financial institution, after the authenticity determination process, the user information (such as name and date of birth) on the surface of the ID card 10 is obtained from the image of the ID card 10 as information necessary for opening the account, registered, and stored in the storage unit 52.

[0039] (3. Take a photo of ID card 10) Figure 7 is a flowchart showing the procedure for photographing the ID card 10 in S1 of Figure 5. In S1, the user terminal 5 first calculates the positions of corners a to d of the ID card 10 within the shooting screen, as shown in Figure 8(a) (S101).

[0040] The method for calculating the positions of corners a to d of the ID card 10 is not particularly limited, but for example, as shown in Figure 8(b), the area of ​​the ID card 10 is cut out from the image 100 captured by the camera 56 (the image displayed in live view on the shooting screen together with the shooting frame 531), the four sides of the ID card 10 are detected, and the intersections of adjacent sides in the circumferential direction of the ID card 10 are defined as corners a to d of the ID card 10.

[0041] Then, as shown in Figure 8(c), the distance d1 from the horizontal edge of the image 100 closest to each corner a to d to that corner a to d, and the distance d2 from the vertical edge of the image 100 closest to each corner a to d to that corner a to d, can be calculated as the position of each corner a to d.

[0042] Next, the user terminal 5 compares the positions of corners a to d of the ID card 10 shown in Figure 8(a) with the positions of corners A to D of the shooting frame 531 (S102). The positions of corners A to D of the shooting frame 531 can be determined in advance using the same method as shown in Figure 8(c) for the horizontal and vertical sides of the shooting screen.

[0043] Then, if the positions of two adjacent corners of the shooting frame 531 in the circumferential direction do not match the positions of the two corners of the ID card 10 corresponding to those two corners (S103; mismatch), the user terminal 5 displays the edge between the two corners of the shooting frame 531 as indicating that it does not correspond to the position of the edge of the ID card 10 (non-correspondence state) (S104). For example, if the positions of two adjacent corners A and B of the shooting frame 531 in the circumferential direction in Figure 8(a) do not match the positions of the two corners a and b of the ID card 10 corresponding to those two corners A and B, the edge between corners A and B of the shooting frame 531 is displayed as a dotted line to indicate a non-correspondence state.

[0044] On the other hand, if the positions of two adjacent corners of the shooting frame 531 in the circumferential direction coincide with the positions of two corners of the ID card 10 corresponding to those two corners (S103; coincidence), the user terminal 5 displays the edge between the two corners of the shooting frame 531 as corresponding to the position of the edge of the ID card 10 (correspondence state) (S105). For example, if the positions of two adjacent corners A and B of the shooting frame 531 in the circumferential direction in Figure 8(a) coincide with the positions of two corners a and b of the ID card 10 corresponding to those two corners A and B, the edge between corners A and B of the shooting frame 531 is displayed as a solid line to indicate the correspondence state.

[0045] The user terminal 5 repeats the determination in S103 until it has determined all two adjacent corners in the circumferential direction of the shooting frame (in the example of Figure 8(a), there are four pairs: corners A and B, corners B and C, corners C and D, and corners D and A) (S106; NO). Once the determination has been made for all two adjacent corners in the circumferential direction of the shooting frame (S106; YES), it proceeds to S107, which will be described later.

[0046] In Figure 9(a), the shooting frame 531 is an example where the determination in S103 shows a mismatch for all two adjacent corners in the circumferential direction of the shooting frame 531, and a dotted line indicating the non-correspondence state is displayed for all sides of the shooting frame 531. On the other hand, in Figure 9(b), the determination in S103 shows a match for one pair of two adjacent corners in the circumferential direction of the shooting frame 531, and a solid line indicating the correspondence state is displayed for the side L between that pair of corners. This makes it possible to distinguish between the sides of the shooting frame 531 that correspond to the positions of the sides of the ID card 10 and the other sides that do not correspond to the positions of the sides of the ID card 10.

[0047] The display on the shooting frame 531 indicating the compatible or incompatible state is not limited to the shape of the edges (solid or dotted line) as described above, but can be any method that allows for the distinction between the two. For example, the two can be distinguished by the color of the edges, or by the temporal change of the edges (e.g., whether or not they blink).

[0048] The user checks the display on each side of the shooting frame 531, rearranges the user terminal 5 and ID card 10, and aligns the position of the ID card 10 in the shooting screen with the shooting frame 531.

[0049] In this process, the user terminal 5 repeats the S101-S106 process with respect to the ID card 10 displayed in live view on the shooting screen until all corners A-D of the shooting frame 531 match the positions of corners a-d of the ID card 10 (S107; NO). Then, when all corners A-D of the shooting frame 531 match the positions of corners a-d of the ID card 10 (S107; YES), the image of the ID card 10 displayed on the shooting screen at that time is acquired as a still image (S108).

[0050] The acquired image is transmitted to the authenticity determination device 3 (see S2 in Figure 5), and the authenticity of the ID card 10 is determined using this image. It is also possible to display a confirmation button (not shown) on the display unit 53 before acquiring the image of the ID card 10 in S108, allowing the user to confirm before acquiring the image.

[0051] As described above, in this embodiment, due to the difference in the display mode of the shooting frame 531, as shown in Figure 9(b), the portion of the shooting screen where the ID card 10 is in the correct position is displayed so that it can be identified, and the user can place the ID card 10 in the correct position on the shooting screen by referring to that display. This makes it easier to acquire an image of the ID card 10 and improves the convenience of identity verification.

[0052] Furthermore, in this embodiment, visibility is enhanced by clearly displaying the sides of the rectangular shooting frame 531 that correspond to the positions of the sides of the ID card 10. In this case, the positions of corners A to D of the shooting frame 531 are compared with the positions of corners a to d of the ID card 10. If the positions of two adjacent corners of the shooting frame 531 match the positions of two corners of the ID card 10, then the side between those two corners of the shooting frame 531 can be considered to correspond to the side of the ID card 10. Also, by acquiring an image of the ID card 10 when the positions of all corners of the shooting frame 531 match the positions of the corners of the ID card 10, a correctly positioned image of the ID card 10 can be obtained.

[0053] Furthermore, in this embodiment, a counterfeit determination system 1, which determines the authenticity of the ID card 10 from an image of the ID card 10 transmitted from the user terminal 5, can be constructed using a network.

[0054] However, the present invention is not limited to the embodiments described above. For example, in this embodiment, an image of ID card 10 is obtained when verifying identity for account opening, but the purpose of identity verification is not particularly limited.

[0055] In this embodiment, image acquisition of the ID card 10 is supported by indicating the corresponding and non-corresponding states on each side of the shooting frame 531. In addition, it is also possible to provide voice support. For example, if there is a side of the shooting frame 531 that corresponds to a side of the ID card 10, or if all corners A to D of the shooting frame 531 coincide with the positions of corners a to d of the ID card 10, a voice message indicating these can be output.

[0056] In this embodiment, the display pattern of the edges of the shooting frame 531 is determined by calculating the positions of corners a to d of the ID card 10 and comparing them with the positions of corners A to D of the shooting frame 531. However, the display pattern of the edges of the shooting frame 531 may also be determined by directly calculating the position of each edge of the ID card 10 and comparing it with the position of each edge of the shooting frame 531. For example, in the case of a vertical edge, the position of each edge of the ID card 10 can be the distance from the vertical edge of the image 100 that is closer to the vertical edge of the ID card 10 in the aforementioned image 100 (see Figures 8(b) and (c)) to that vertical edge of the ID card 10. In the case of a horizontal edge, it can be the distance from the horizontal edge of the image 100 that is closer to the horizontal edge of the ID card 10 to that horizontal edge of the ID card 10. The positions of each edge of the shooting frame 531 can also be determined in advance for the horizontal and vertical edges of the shooting screen using the same method as described above.

[0057] In this embodiment, a rectangular shooting frame 531 is displayed on the shooting screen as an auxiliary indicator to show the correct placement of the ID card 10. However, as shown in Figure 10, for example, it is also possible to display only the corners 531a of the rectangle. In this case, in S102, the positions of each corner 531a and the corners a to d of the ID card 10 are compared. If the position of a corner 531a matches the position of the corresponding corner of the ID card 10, an indication of correspondence is displayed for that corner 531a; otherwise, an indication of non-correspondence is displayed. In addition, as an auxiliary indicator, a frame showing the correct position of the facial image area to be printed on the ID card 10 can be added to the shooting screen, which helps the user correctly determine the position of the ID card 10.

[0058] In this embodiment, the processes S101-S103 and S106-S107 in Figure 7 are performed by the user terminal 5, but depending on the communication environment, these processes can also be performed by a server not shown. In that case, the user terminal 5 transmits the image of the ID card 10 captured by the camera 56 to the server for these processes to be performed. The user terminal 5 displays each side of the shooting frame 531 as either the corresponding or non-corresponding state according to the determination result of S103, and acquires the image of the ID card 10 displayed on the shooting screen as a still image according to the determination result of S107. The authenticity determination device 3 can also be used as the server described above.

[0059] In this embodiment, the authenticity of the ID card 10 is determined by the authenticity determination device 3, but it is also possible to perform the authenticity determination on the user terminal 5. In this case, it is not necessary to transmit an image of the ID card 10 from the user terminal 5 to the authenticity determination device 3 (see S2 in Figure 5).

[0060] Preferred embodiments of the present invention have been described above with reference to the attached drawings, but the present invention is not limited to these examples. It will be obvious to those skilled in the art that various modifications or alterations can be conceived within the scope of the technical idea disclosed herein, and these will naturally also fall within the technical scope of the present invention. [Explanation of Symbols]

[0061] 1: Authenticity Verification System 3: Authenticity verification device 5: User terminal 10: ID card 501:Display means 502: Acquisition method 503: Transmission method 531: Filming slot 531a: Corner A-D: Corners (of the shooting frame) a~d: Corner (of an ID card) L: (The side of the shooting frame)

Claims

1. A camera terminal for taking pictures of identification documents, The system has a display means that provides an auxiliary display indicating the correct placement of the identification document on the screen where the identification document is photographed. The display means displays the portion of the auxiliary display corresponding to the position of the identification document in the shooting screen in a way that allows for identification of the portion of the auxiliary display that does not correspond to the position of the identification document. The aforementioned auxiliary display and the aforementioned identification document are rectangular in shape. The aforementioned portion is the side of the auxiliary indicator, The display means displays, in the captured image, the edges of the auxiliary display that correspond to the position of the edges of the identification document, in a way that allows them to be distinguished from the edges of the auxiliary display that do not correspond to the position of the edges of the identification document. The display means is characterized in that, when the positions of two adjacent corners of the auxiliary display in the circumferential direction coincide with the positions of two corners of the identification document, the side between the two corners of the auxiliary display corresponds to the position of the side of the identification document.

2. The aforementioned shooting terminal is The shooting terminal according to claim 1, characterized in that it has an acquisition means for acquiring an image of the identification document displayed on the shooting screen when the positions of all the corners of the auxiliary display coincide with the positions of the corners of the identification document.

3. The aforementioned shooting terminal is An acquisition means for acquiring an image of the identification document displayed on the aforementioned shooting screen, A transmission means for transmitting the image of the identity verification document obtained by the acquisition means to an authenticity determination device that uses the image to determine the authenticity of the identity verification document, A shooting terminal according to claim 1 or 2, characterized by having the following features.

4. A camera that takes a picture of your identification document, A camera terminal having a display means that provides an auxiliary display indicating the correct placement of the identification document on the screen for photographing the identification document, The display means displays the portion of the auxiliary display corresponding to the position of the identification document in the shooting screen in a way that allows for identification of the portion of the auxiliary display that does not correspond to the position of the identification document. The aforementioned auxiliary display and the aforementioned identification document are rectangular in shape. The aforementioned portion is the side of the auxiliary indicator, The display means displays, in the captured image, the edges of the auxiliary display that correspond to the position of the edges of the identification document, in a way that allows them to be distinguished from the edges of the auxiliary display that do not correspond to the position of the edges of the identification document. The program for causing the display means to function as a camera terminal is characterized in that, when the positions of two adjacent corners of the auxiliary display coincide with the positions of two corners of the identification document, the side between the two corners of the auxiliary display corresponds to the position of the side of the identification document.

5. The aforementioned shooting terminal, The program according to claim 4 for functioning as a shooting terminal, characterized in that it has an acquisition means for acquiring an image of the identification document displayed on the shooting screen when the positions of all the corners of the auxiliary display coincide with the positions of the corners of the identification document.

Images