JP2007226549A - Id card system and id card preparing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an ID card system and an ID card preparing method, for further increasing characteristic points of a photographed face image. <P>SOLUTION: A second camera 52 is disposed in a position different from a first camera 51. A controller 55 drives the first camera 51 and the second camera 52 to input an image, and acquires the face image of an applicant from the first camera 51 and the second camera 52. Photographing of the first camera 51 and photographing of the second camera 52 are simultaneously performed. The controller 55 performs identification by collating the face images acquired by the cameras 51, 52 with the previously photographed face images. After identification completion, the photographed face image is printed on an ID card by a printer 80. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an ID card system and an ID card creation method.

  Recently, a small IC chip having a non-volatile memory and a CPU has become widespread, and an ID card incorporating such an IC chip is applied to an employee card, a license, or the like. On ID cards, face photos and personal information (ID number, address, name, age, affiliation, etc.) are printed directly on the surface of a paper or plastic card, and digital data is stored on an IC chip built into the card. Personalized personal information is recorded.

In addition, to prevent ID card misissuance for those who pretend to be registrants, register the registrant's face image as electronic data, or determine whether the applicant is a registrant. Technologies have been developed (see, for example, Patent Document 1, Patent Document 2, Patent Document 3, and Patent Document 4). In general, when determining whether an applicant who has applied for an ID card issuance is a registrant, the applicant's face image is taken with an electronic camera, and the face image is collated with the registered face image. Verification is performed by the device. In this case, the collation device extracts feature points from the captured face image, extracts feature points from the registered face image, and compares both feature points.
JP 2005-71059 A JP 2005-141379 A JP 2005-151316 A JP 2005-308966 A

  In order to improve the collation accuracy by the collation device, it is important to increase the number of feature points of the captured face image. Accordingly, an object of the present invention is to provide an ID card system and an ID card creation method that can increase the number of feature points of a captured face image.

  The ID card system according to claim 1 is arranged at a position different from each other, a plurality of cameras that photograph a person and input a face image of the person by photoelectric conversion, and are input by each of the cameras A controller that acquires a face image from each camera, and a filing device that stores the face image acquired by the controller.

  The ID card system according to claim 2 is arranged at a position different from each other, a plurality of cameras that photograph a person and input a face image of the person by photoelectric conversion, and are input by each of the cameras A controller that acquires a face image from each camera, and a printer that prints the face image acquired by the controller on an ID card.

  The ID card system according to claim 3 is the ID card system according to claim 2, further comprising a filing device that stores feature point data, wherein the controller uses the feature point data from the face image acquired from each camera. And the feature point data calculated and the feature point data stored in the filing device are collated to confirm whether or not the user is the original person. The face image acquired by the controller is printed on an ID card.

  The ID card system according to claim 4 is the ID card system according to claim 3, wherein the filing device stores a plurality of feature point data in association with ID numbers.

  The ID card system according to claim 5 is the ID card system according to any one of claims 1 to 4, wherein the plurality of cameras have different angles for photographing a subject.

  The ID card system according to claim 6 is the ID card system according to any one of claims 1 to 5, wherein the plurality of cameras have different shooting magnifications.

  The ID card system according to claim 7 is the ID card system according to any one of claims 1 to 6, wherein the plurality of cameras have different wavelength bands of light indicating sensitivity.

  An ID card system according to an eighth aspect is the ID card system according to any one of the first to seventh aspects, wherein the controller causes the plurality of cameras to perform photographing simultaneously.

  The ID card system according to claim 9 is the ID card system according to any one of claims 1 to 8, wherein the controller compresses the face images acquired from the plurality of cameras at different compression rates. It is characterized by.

  The ID card creation method according to claim 10, wherein a step of photographing a person to be photographed by a plurality of cameras arranged at different positions and inputting a face image of the person to be photographed by photoelectric conversion; An acquisition step of acquiring a face image input by each camera from each camera, and a printer includes a printing step of printing the face image acquired by the controller on an ID card.

  The ID card creation method according to claim 11 is the ID card creation method according to claim 10, wherein the controller calculates feature point data from the face image acquired in the acquisition step, and the calculated feature point data. And a feature point data stored in the filing device to confirm whether or not the person is the person, and when the identity is confirmed by the controller in the confirmation step, the printer A process is performed.

  According to the present invention, since the subject is photographed by a plurality of cameras arranged at different positions, a plurality of face images are acquired in the controller. For this reason, the number of feature points increases, and when matching is performed based on the plurality of face images, the matching accuracy is improved.

  The best mode for carrying out the present invention will be described below with reference to the drawings. However, although various technically preferable limitations for implementing the present invention are given to the embodiments described below, the scope of the invention is not limited to the following embodiments and illustrated examples.

  FIG. 1 is a diagram showing a system configuration of the ID card system 100. As shown in FIG. 1, the ID card system 100 includes a host computer 1, a registration terminal 10, a photographing / collating device 50, a face image filing device 70, a card printer 80, an issuing terminal 90, and the like. Data is transmitted and received through N.

  The host computer 1 has a function as a server that manages the ID card system 100 in an integrated manner, and includes a database (not shown) that manages data transmitted and received in the ID card system 100. The host computer 1 receives the applicant's personal information and ID number transmitted from the registration terminal 10 and the applicant's face image and feature point data transmitted from the imaging / collation device 50, and associates the received information with each other. Save it in the database. Further, the host computer 1 sends the requested personal information and ID number of the applicant to the card printer 80, the photographing / collating device 50, and the issuing terminal in response to requests from the photographing / collating device 50, the card printer 80, and the issuing terminal 90. 90.

  The registration terminal 10 is a terminal operated by an operator who accepts an application form. The registration terminal 10 is an apparatus that inputs personal information related to the applicant based on the description of the application form and issues an ID number corresponding to the personal information. is there. Further, the registration terminal 10 transmits the input personal information to the host computer 1 in association with the ID number.

  The photographing / collating device 50 is a device that includes a plurality of cameras that input an applicant's (photographer's) face image by photoelectric conversion, and acquires the applicant's face image using these cameras. This photographing / collating device 50 performs processing for extracting feature point data from the face image photographed by each camera, further performs processing for compressing the face image photographed by each camera, and the face image and feature point data. Are transmitted to the face image filing device 70 in association with each other. Further, the image capturing / collation device 50 performs identity verification by collating the face image captured by each camera and its feature point data with the face image received from the face image filing device 70 and its feature point data.

  The face image filing device 70 receives the face image and feature point data associated with the ID number from the photographing / collation device 50. The face image filing device 70 stores and manages the feature point data of the face image and the face image based on the ID number.

  The card printer 80 includes a printing device and the like, receives personal information from the host computer 1, and receives an ID number and a face image from the face image filing device 70 and the photographing / collating device 50. Then, the ID number included in the received personal information is matched with the ID number attached to the face image, and an ID card on which the personal information and the face image are described is printed and created.

  The issuing terminal 90 includes a reader / writer, receives personal information and an ID number from the host computer 1, and receives a face image and its feature point data from the face image filing device 70, and stores each received information in a built-in memory of the ID card. Record.

  Next, the photographing / collating device 50 will be described in detail with reference to FIGS. FIG. 2 is a side view of the photographing / collating device 50, and FIG. 3 is a block diagram of the photographing / collating device 50.

  As shown in FIG. 2, the photographing / collating device 50 includes a first camera 51, a second camera 52, a flash device 53, and a control box 54.

  The flash machine 53 is constituted by, for example, a fluorescent lamp, a halogen lamp, or a metal halide lamp, and irradiates light to an applicant sitting on a chair at the time of photographing.

  Each of the first camera 51 and the second camera 52 is an optical lens that forms an image of the applicant's face sitting on a chair, and a photosensor that converts an image formed by the optical lens into an electrical signal by photoelectric conversion. Array (for example, CCD (Charge Coupled Device) type solid-state imaging device, CMOS (Complementary Metal Oxide Semiconductor) type solid-state imaging device) and image signal output from the photosensor array are sampled with a predetermined resolution and the image signal is converted into digital data. A signal processing circuit that converts the image of the applicant into an image, and inputs the face image of the applicant through an optical lens, a photosensor array, a signal processing circuit, and the like.

  The first camera 51 and the second camera 52 are arranged at positions separated from each other, and an angle at which the applicant is photographed by the first camera 51 and an angle at which the applicant is photographed by the second camera 52 are different from each other. The first camera 51 is arranged in front of the applicant's face, and the face image photographed by the first camera 51 is used for printing an ID card by the card printer 80, and also for verification for identity verification. Used. On the other hand, the second camera 52 is disposed below the first camera 51, and the face image photographed by the second camera 52 is used for verification for identity verification.

  In addition, the angle of view of the first camera 51 and the angle of view of the second camera 52 may be the same, but more preferably different.

  Further, the shooting magnification of the first camera 51 and the shooting magnification of the second camera 52 may be the same, but more preferably different. For example, the shooting magnification of the first camera 51 is set so that the portion from the chest to the top of the applicant falls within the shooting range of the first camera 51, and the shooting magnification of the second camera 52 is set to the first shooting. By setting the magnification larger than the magnification, the applicant's face is greatly within the photographing range of the second camera 52. Further, the shooting magnification of the second camera 52 may be set to be larger so that a part of the applicant's face (for example, eyes, nose, mouth, etc.) is raised.

  Further, the spectral characteristics of the first camera 51 and the spectral characteristics of the second camera 52 may be the same, but more preferably different. For example, the first camera 51 inputs a visible light image by showing sensitivity to light in the visible wavelength range, and the second camera 52 shows sensitivity to light in the infrared wavelength range, thereby giving an infrared image. Enter.

  As shown in FIG. 3, the photographing / collating device 50 further includes a controller 55, an input unit 56, a display unit 57, a communication unit 58, and a storage unit 59. The controller 55, the communication unit 58, and the storage unit 59 are built in the control box 54 shown in FIG. 2, and the display unit 57 is placed on the display box 54.

  The controller 55 performs various processes according to the program recorded in the storage unit 59 and drives the first camera 51, the second camera 52, the display unit 57, and the communication unit 58. The face image photographed by the first camera 51 is transferred to the controller 55, and the face image photographed by the second camera 52 is also transferred to the controller 55.

  The input unit 56 includes a keyboard having cursor keys, numeric input keys, and various function keys, and transfers an operation signal corresponding to the key pressed on the keyboard to the controller 55. Further, the input unit 56 is a pointing device such as a mouse or a touch panel, an OCR (Optical Character Reader) device that optically reads an ID number printed on an ID card or an ID card application, and a magnetic field of an ID card as necessary. Various other input devices such as a reader / writer (R / W) device that reads an ID number or image information stored in a stripe or a semiconductor memory may be provided.

  The display unit 57 is a CRT (Cathode Ray Tube) or an LCD (Liquid Crystal Display), and performs various displays according to a display control signal transferred from the controller 55.

  The communication unit 58 performs control for communicating with other devices via the network N. Data received by the communication unit 58 via the network N is transferred to the controller 55, and the data transferred from the controller 55 to the communication unit 58 is transmitted to other devices by the communication unit 58.

  The storage unit 59 includes a recording medium (not shown) in which a program is stored in advance, and this recording medium is configured by a magnetic storage medium, an optical recording medium, or a semiconductor memory. The program stored in the recording medium of the recording unit 59 is stored in the form of program code that can be read by the controller 55 as a computer, and the controller 55 sequentially executes operations according to the program code.

  FIG. 4 is a block diagram of the issuing terminal 90. As shown in FIG. 4, the issuing terminal 90 performs display by being driven by the controller 95, a storage unit 99 that stores the issuing program, a controller 95 that performs various processes in accordance with the program stored in the storage unit 99. The display unit 97, a communication unit 98 that performs control for communicating with other devices via the network N by being driven by the controller 95, and an operation signal corresponding to the operation content when operated by the controller 95. And a reader / writer 94 that is driven by the controller 95 to write data to the ID card and read data from the ID card. The reader / writer 94 includes an antenna, a transmission / reception circuit, a control circuit, an I / F unit, etc., and supplies and communicates power to the ID card by electromagnetic induction, and transmits data to the built-in memory of the ID card. Read or write.

  With reference to FIG. 5, the information acquisition process performed at the time of new registration or update registration will be described. FIG. 5 is a flowchart showing a flow of information acquisition processing by the controller 55 of the photographing / collating device 50 at the time of new registration or update registration. A program for causing the controller 55 to realize each function described in the flowchart of FIG. 5 is stored in the storage unit 59.

  As shown in FIG. 5, the controller 55 inputs the ID number of the applicant issued by the registration terminal 10 from the input unit 56 (step S1), and determines whether or not the preparation for photographing the face image is complete (step S1). S2). Here, as a method for determining whether or not the face image is ready for photographing, a sensor is provided in a photographing chair for the applicant to be seated, and a predetermined time (for example, 5 When a shooting preparation OK instruction is input via the input unit 56 by a method for determining that the preparation for shooting has been completed, or by a photographer or an applicant for shooting a face image, the preparation for shooting is completed. There is a method to determine that it is in order.

  Next, when it is determined that the face image is ready to be photographed (step S2; Yes), the controller 55 drives the first camera 51 and the second camera 52 to drive the first camera 51 and the second camera 52. The camera 52 is caused to input an image. And the controller 55 acquires the applicant's face image input by the 1st camera 51 and the 2nd camera 52 from the 1st camera 51 and the 2nd camera 52 (step S3). Here, it is preferable that the controller 55 causes the first camera 51 and the second camera 52 to perform photographing simultaneously.

  Then, the controller 55 compresses the face image acquired from the first camera 51 and compresses the face image acquired from the second camera 52 (step S4). Here, in step S <b> 4, the controller 55 makes the compression rate of the face image acquired from the first camera 51 lower than the compression rate of the face image acquired from the second camera 52. Hereinafter, the face image acquired and compressed from the first camera 51 is referred to as a main face image, and the face image acquired from the second camera 52 and compressed is referred to as a sub-face image.

  Subsequently, the controller 55 extracts feature point data from the main face image according to a predetermined algorithm (step S5). Further, the controller 55 extracts feature point data from the sub-face image according to a predetermined algorithm (step S6). Hereinafter, feature point data extracted from the main face image is referred to as main feature point data, and feature point data extracted from the sub face image is referred to as sub feature point data.

Then, the controller 55 associates the main face image and the main feature point data with the ID number and transmits them to the face image filing device 70, and then associates the sub face image and the sub feature point data with the ID number to perform face image filing. It transmits to the apparatus 70 (step S7). The face image filing device 70 stores the received main face image, main feature point data, sub face image, and sub feature point data in the database in association with the ID number. Furthermore, the controller 55 associates the main face image and main feature point data with the ID number and transmits them to the host computer 1, and then associates the sub face image and sub feature point data with the ID number and sends them to the host computer 1. (Step S8). Thereby, the host computer 1 stores the received main face image, main feature point data, sub face image, and sub feature point data in the database in association with the ID number.
Then, the process of the controller 55 ends.

  Next, referring to FIG. 6, a verification process for performing personal authentication using face images and feature point data when an ID card is created / issued will be described. FIG. 6 is a flowchart showing the flow of verification processing in the ID card creation method. A program for causing the controller 55 to realize each function described in the flowchart of FIG. 6 is stored in the storage unit 59.

  As shown in FIG. 6, the controller 55 inputs the ID number of the applicant who performs identity verification from the input unit 56 (step S11), and determines whether or not the preparation for photographing the face image is complete (step S12). Next, when it is determined that the face image is ready to be captured (step S12; Yes), the controller 55 drives the first camera 51 and the second camera 52 to drive the first camera 51 and the second camera 52. The camera 52 is caused to input an image. Then, the controller 55 acquires the applicant's face image input by the first camera 51 and the second camera 52 (step S13). The controller 55 compresses the face image acquired from the first camera 51 and compresses the face image acquired from the second camera 52 at a higher compression rate than the face image acquired from the first camera 51. (Step S14). Subsequently, the controller 55 extracts feature point data from the face image acquired from the first camera 51 according to a predetermined algorithm (step S15). The controller 55 extracts feature point data from the face image acquired from the second camera 52 according to a predetermined algorithm (step S16). Further, the controller 55 transmits a request instruction for main feature point data and sub feature point data together with the input ID number of the applicant to the face image filing device 70 (step S17). The main feature point data and sub feature point data corresponding to the number are received (step S18).

  Then, the controller 55 collates the feature point data acquired in step S15 with the main feature point data received in step S18, and the sub feature point received in step S18 the feature point data acquired in step S16. The data is collated and it is confirmed whether or not the user is the person himself (step S19). Then, the feature point data acquired in step S15 matches the main feature point data received in step S18, and the feature point data acquired in step S16 is the sub feature point data received in step S18. (Step S19: Yes), the controller 55 determines that the personal authentication has succeeded, confirms the identity, displays an authentication OK message on the display unit 57 (Step S25), and ends the verification process. .

  On the other hand, if the feature point data acquired in step S15 does not match the main feature point data received in step S18, or the feature point data acquired in step S16 is not the sub feature point data received in step S18. In the case (step S19: No), the controller 55 transmits the request instruction for the main face image and the sub face image together with the applicant ID number to the face image filing device 70 (step S20). Next, the controller 55 receives the main face image and the sub face image corresponding to the ID number from the face image filing device 70 (step S21). Then, the controller 55 extracts feature point data from the received main face image (step S22). Next, the controller 55 extracts feature point data from the received sub-face image (step S23). Then, the controller 55 collates the feature point data acquired in step S15 with the feature point data acquired in step S22, and the feature point data acquired in step S16 and the feature point data acquired in step S23. Collation is performed and it is confirmed whether or not the user is the person himself (step S24).

  Here, the feature point data acquired in step S15 matches the feature point data acquired in step S22, and the feature point data acquired in step S16 matches the feature point data acquired in step S23. In the case (step S24: Yes), the controller 55 determines that the personal authentication is successful, confirms the identity, and causes the display unit 57 to display an authentication OK message (step S25). Then, the controller 55 associates the face image acquired from the first camera 55 with the ID number and transmits it to the card printer 80, and ends the collation process. On the other hand, if the feature point data acquired in step S15 does not match the feature point data acquired in step S22, or the feature point data acquired in step S16 matches the feature point data acquired in step S23. In the case (step S24: No), the controller 55 determines that the personal authentication has failed, displays an authentication error message on the display unit 57 (step S26), and ends the matching process.

  When the card printer 80 receives the face image and the ID number from the controller 55, the card printer 80 requests the host computer 1 for personal information corresponding to the ID number. Receiving the request, the host computer 1 transmits personal information corresponding to the ID number to the card printer 80 in association with the ID number. The card printer 80 prints the face image and ID number received from the controller 55 on the ID card, and prints the personal information received from the host computer 1 on the ID card.

  Next, an ID card creation process for creating an ID card will be described with reference to FIG. FIG. 7 is a flowchart showing an ID card creation process executed by the controller 95 of the issuing terminal 90. A program for causing the controller 95 to realize each function described in the flowchart of FIG. 7 is stored in the storage unit 99.

  The ID card created here is verified as a result of the collation process as shown in FIG. 6 as a pre-process (Step S19: Yes, Step S24: Yes), and is printed on the surface by the card printer 80. It is assumed that an ID card printed with personal information, a face image, and an ID number is used. As shown in FIG. 7, the controller 95 inputs the applicant's ID number (step S31), and sends a request instruction for personal information to the host computer 1 together with the input ID number of the applicant (step S32). . Then, personal information corresponding to the ID number is received from the host computer (step S33).

  Further, the controller 95 transmits a request instruction for main feature point data and / or sub feature point data together with the ID number of the applicant to the face image filing device 70 (step S34). Corresponding main feature point data and / or sub feature point data is received (step S35).

  Further, the controller 95 transmits a request instruction for the main face image and / or the sub face image together with the applicant's ID number to the face image filing device 70 (step S36), and corresponds to the ID number from the face image filing device 70. The main face image and / or the sub face image to be received is received (step S37).

  When the ID card is set in the reader / writer 94, the controller 95 controls the reader / writer 94 to control the ID number, personal information, main feature point data, sub feature point data, main face image, sub face. The image is recorded in the internal memory of the ID card (step S38). When the recording of information is completed, the controller 95 ends the ID card creation process.

  Note that some of the functions shown in FIG. 6 may be implemented in a collation device different from the image capturing / collation device 50. The collation device is connected to the network N, and the collation device realizes steps S11 and S15 to S26 in FIG. Here, the controller 55 of the photographing / collation apparatus 50 performs steps S13 to S14, and transmits the face image acquired by the first camera 51 and the face image acquired by the second camera 52 to the collation apparatus. And the collation apparatus performs step S15-step S26 of FIG. 6 like the controller of the imaging | photography and collation apparatus 50. FIG.

  As described above, since the face image of the applicant is acquired by the first camera 51 and the second camera 52, the controller 55 acquires two face images. Therefore, the feature points increase. Since collation is performed based on these two face images, the collation accuracy is improved and the identity can be confirmed with high accuracy. In other words, impersonation of a third party in the ID card creation process can be prevented appropriately.

  Further, since the angle of the first camera 51 and the angle of the second camera 52 are different, the feature points can be extracted as three-dimensional data (for example, the height of the nose, the height of the cheek, the unevenness of the face). it can. In addition, if either the first camera 51 or the second camera 52 is an infrared camera, it is possible to extract feature points that could not be extracted in the case of visible light (for example, facial scratches, spots, etc.). .

The present invention is not limited to the above embodiment, and various improvements and design changes may be made without departing from the spirit of the present invention.
For example, the number of cameras provided in the photographing / collating device 50 may be three or more.

It is the block diagram which showed the structure of the ID card system. It is a side view of the imaging | photography and collation apparatus shown in FIG. It is the block diagram which showed the structure of the imaging | photography / collation apparatus shown in FIG. It is the block diagram which showed the structure of the issuing terminal shown in FIG. It is the flowchart which showed the flow of the information acquisition process performed by the controller shown in FIG. It is the flowchart which showed the flow of the authentication process performed by the controller shown in FIG. It is the flowchart which showed the flow of ID card creation processing performed by the controller shown in FIG.

Explanation of symbols

50 Imaging / Verification Device 51 First Camera 52 Second Camera 55 Controller

Claims (11)

A plurality of cameras that are arranged at different positions, photograph the subject and input the face image of the subject by photoelectric conversion,
A controller for acquiring a face image input from each camera from each camera;
An ID card system comprising: a filing device that stores a face image acquired by the controller. A plurality of cameras that are arranged at different positions, photograph the subject and input the face image of the subject by photoelectric conversion,
A controller for acquiring a face image input from each camera from each camera;
An ID card system comprising: a printer that prints a face image acquired by the controller on an ID card. Further comprising a filing device storing feature point data,
The controller calculates feature point data from the face image acquired from each camera, and checks whether or not the person is the person by comparing the calculated feature point data with the feature point data stored in the filing device. Confirmed,
The ID card system according to claim 2, wherein the printer prints the face image acquired by the controller on the ID card when the controller confirms the identity.   The ID card system according to claim 3, wherein the filing device stores a plurality of feature point data in association with ID numbers.   The ID card system according to any one of claims 1 to 4, wherein the plurality of cameras have different angles for photographing a subject.   The ID card system according to any one of claims 1 to 5, wherein the plurality of cameras have different shooting magnifications.   The ID card system according to any one of claims 1 to 6, wherein the plurality of cameras have different wavelength bands of light indicating sensitivity.   The ID card system according to claim 1, wherein the controller causes the plurality of cameras to perform photographing simultaneously.   The ID card system according to any one of claims 1 to 8, wherein the controller compresses face images acquired from the plurality of cameras at different compression rates. Photographing a subject with a plurality of cameras arranged at different positions and inputting a face image of the subject by photoelectric conversion;
An acquisition step in which a controller acquires a face image input from each camera from each camera;
A method for creating an ID card, wherein the printer includes a printing step of printing the face image acquired by the controller on the ID card. The controller calculates feature point data from the face image acquired in the acquisition step, and confirms whether or not the person is the person by comparing the calculated feature point data with the feature point data stored in the filing device. Further including a confirmation step
The ID card creation method according to claim 10, wherein the printer performs the printing step when the person is verified by the controller in the confirmation step.

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