JP2006085265A - Identification device, method and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To rapidly and easily update biological information in identifying a person to be identified using the biological information. <P>SOLUTION: A card reader 10 reads from the IC chip 32 of the ID card 30 of the person to be identified his or her ID information, and a registered characteristic quantity that is the registered characteristic quantity of his or her face. An imaging part 12 images the person to be identified and a characteristic quantity creating part 20 creates an imaged characteristic quantity on the basis of face image data obtained by the imaging. An identification process part 14 performs an authentication process by collating the imaged characteristic quantity with the registered characteristic quantity. If the identification is successful, a determination is made as to whether the imaged characteristic quantity is stored in a storage part 16 for the same person to be identified; if it is stored, the registered characteristic quantity stored in the IC chip 32 is updated according to the imaged characteristic quantity stored. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an authentication apparatus and method for authenticating a person to be authenticated using biometric information such as a face and a fingerprint, and a program for causing a computer to execute the authentication method.

  Various methods for authenticating individuals have been proposed. For example, various systems have been proposed that perform personal authentication using biometric information such as eye iris, voiceprint, fingerprint, face, face contour, and other features. Also, biometric information and ID information for identifying an individual are recorded on an ID card equipped with an IC chip, the biometric information and the ID information are read from the ID card, the biometric information of the person to be authenticated is photographed, and acquired by photographing A system has also been proposed in which authentication is performed by comparing captured biometric information with biometric information read from an ID card.

  By the way, biometric information such as a face changes with age and further by plastic surgery. In addition, the biological information changes depending on the hairstyle and makeup state. For this reason, in the authentication system using biometric information, there exists a problem that there exists a tendency for authentication precision to fall with progress of time.

  For this reason, when biometric information of the face is created based on the face image of the person to be authenticated imaged at the time of authentication, and the biometric information of the created face is compared with the biometric information stored in the ID card, authentication is performed. When authentication is successful, it is determined whether or not the biometric information stored in the ID card is an update time. If it is determined that it is the update time, the biometric information in the ID card is rewritten with the acquired biometric information. A system that updates biometric information recorded on an ID card has been proposed (see Patent Document 1).

  In addition, the registered signature data (referred to as data 2) stored in the ID card is compared with the signature data at the time of authentication (referred to as data 1), and if the verification is passed, the authentication is successful. There has also been proposed a system in which data 1 and data 2 are weighted and averaged to obtain new registration data, and data 2 in the ID card is rewritten with the new registration data (see Patent Document 2).

According to such a system, the authentication target person can always be authenticated based on the latest information, so that it is possible to prevent a decrease in authentication accuracy even if the biometric information changes over time.
JP 2003-337926 A JP-A-11-110544

  However, in the system described in Patent Document 1, it is necessary to determine whether or not the biometric information stored in the ID card is at an update time. In the system described in Patent Document 2, it is necessary to obtain new registration data by weighted averaging of newly obtained data. For this reason, in the system described in the said patent documents 1 and 2, there exists a problem that the process for updating biometric information requires time. In addition, since the systems described in Patent Documents 1 and 2 require that an ID card be loaded into an authentication device until authentication is completed, an authentication operation is very troublesome for an authentication target person. Yes.

  The present invention has been made in view of the above circumstances, and it is an object of the present invention to update biometric information quickly and easily when authenticating a person to be authenticated using biometric information.

An authentication apparatus according to the present invention includes an information reading unit that reads the ID information and the biological information from an authentication card having a storage unit in which the ID information and biological information of the person to be authenticated are stored.
Imaging means for capturing the biometric information by capturing the person to be authenticated;
Authentication processing means for performing authentication processing for comparing the read biometric information and the captured biometric information;
When the recognition target person is authenticated, the captured biological information storage unit stores the captured biological information in association with the read ID information;
When the authentication process is performed again for the person to be authenticated in which the captured biometric information is stored, the biometric information stored in the storage unit is updated with the captured biometric information stored in the captured biometric information storage unit, And updating means for updating the photographed biometric information stored in the photographed biometric information storage means with the photographed biometric information acquired during the re-authentication process.

  “Biometric information” means information unique to an authentication target, such as feature amounts such as iris, voice print, fingerprint, face, and face outline, acquired from the authentication target. Note that signature data as described in Patent Document 2 is also unique to the person to be authenticated, and is therefore included in the biometric information.

An authentication method according to the present invention includes an information reading unit that reads the ID information and the biological information from an authentication card having a storage unit that stores the ID information and biological information of the person to be authenticated.
Imaging means for capturing the biometric information by capturing the person to be authenticated;
In an authentication method in an authentication apparatus comprising an authentication processing means for performing an authentication process for comparing the read biometric information and the captured biometric information,
When the recognition target person is authenticated, the captured biometric information is stored in association with the read ID information,
When the authentication process is performed again for the person to be authenticated in which the captured biometric information is stored, the biometric information stored in the storage unit is updated with the captured biometric information stored in the captured biometric information storage unit,
The biometric information stored in the biometric information storage unit is updated with the biometric information acquired during the re-authentication process.

  The authentication method according to the present invention may be provided as a program for causing a computer to execute the authentication method.

  According to the present invention, when the biometric information acquired by imaging is stored and the authentication process is performed again for the person to be authenticated who stores the biometric information, the stored biometric information is stored in the storage unit. The biometric information thus updated is updated, and the captured biometric information stored by the captured biometric information acquired during the second authentication process is updated. Therefore, unlike the systems described in Patent Documents 1 and 2, it is not necessary to determine whether or not it is an update time or to perform a process for obtaining a weighted average. As a result, biometric information is updated. Processing can be performed quickly. Further, since the authentication target person can immediately remove the authentication card from the authentication device after the biometric information is photographed, it is possible to reduce troublesomeness when performing an operation for authentication.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a schematic block diagram showing the configuration of the authentication device according to the present embodiment. As illustrated in FIG. 1, the authentication device 1 according to the present embodiment includes a card reader 10, a photographing unit 12, an authentication processing unit 14, a storage unit 16, an update unit 18, and a feature amount generation unit 20.

  The card reader 10 receives the ID information and the feature amount of the IC chip 32 of the ID card 30 including the IC chip 32 that stores the ID information for identifying the subject of authentication and the feature amount of the face of the subject of authentication. Reading and writing of feature values described later are performed. The card reader 10 may read and write information in a non-contact manner with respect to the IC chip 32, or may read and write information in contact with the IC chip 32.

  The imaging unit 12 captures the face of the person to be authenticated and acquires face image data.

  The authentication processing unit 14 uses a feature amount read from the IC chip 32 by the card reader 10 (hereinafter referred to as a registered feature amount since it has already been registered) and face image data acquired by photographing as described later. Authentication processing of the person to be authenticated is performed by collating with the generated feature amount (hereinafter referred to as a shooting feature amount). Then, information indicating the authentication result (that is, information indicating whether the authentication has succeeded or failed) is output. Information representing the authentication result is used in various security systems using the authentication device according to the present embodiment.

  The storage unit 16 stores the imaging feature amount when authentication is successful in association with the ID information of the person to be authenticated.

  The update unit 18 performs the authentication process again for the authentication target person whose shooting feature value is stored in the storage unit 16, and when the authentication is successful, the IC chip 32 uses the shooting feature value stored in the storage unit 16. In addition to updating the registered feature quantity stored in the photographic feature quantity, the photographic feature quantity stored in the storage unit 16 is updated with the new photographic feature quantity acquired during the second authentication process. Note that whether or not the shooting feature value is stored in the storage unit 16 is determined whether or not the shooting feature value associated with the ID information read by the card reader 10 is stored in the storage unit 16. By doing.

  The feature amount generation unit 20 generates a feature amount of a face from face image data acquired by the photographing unit 12 photographing the face of the person to be authenticated. Note that the positional relationship between the eyes, nose, ears, and mouth is used as the feature quantity, but the face outline or the like may be used. When the feature amount is the positional relationship between the eyes, nose, ears, and mouth, the authentication processing unit 14 determines that the positional relationship between the eyes, nose, ears, and mouth based on the registered feature amounts is based on the imaging feature amounts. It is determined that the degree of coincidence with the positional relationship between the ear and mouth is successful, and if the degree of coincidence exceeds a predetermined threshold, the authentication of the person to be authenticated is successful.

  Next, processing performed in the present embodiment will be described. FIG. 2 is a flowchart showing processing performed in the present embodiment. First, the card reader 10 reads the ID information and the registered feature amount from the IC chip 32 of the authentication target person's ID card 30 (step ST1), and the photographing unit 12 captures the face of the authentication target person and acquires face image data. (Step ST2). Then, the feature amount generation unit 20 generates a shooting feature amount from the face image data (step ST3).

  Next, the authentication processing unit 14 performs an authentication process by comparing the registered feature value and the shooting feature value (step ST4). Then, it is determined whether or not the authentication is successful (step ST5). If step ST5 is denied, information indicating the authentication result of the authentication failure is output (step ST6), and the process is terminated.

  When step ST5 is affirmed, information indicating the authentication result of successful authentication is output (step ST7), and the updating unit 18 further determines whether or not the same authentication target person's imaging feature quantity is stored in the storage unit 16. Determination is made (step ST8). If step ST8 is negative, the shooting feature amount generated by the feature amount generation unit 20 is stored in the storage unit 16 (step ST9), and the process ends.

  When step ST8 is affirmed, the update unit 18 updates the registered feature amount stored in the IC chip 32 with the shooting feature amount via the card reader 10 (step ST10), and the shooting feature stored in the storage unit 16 The amount is updated with a new shooting feature amount (step ST11), and the process is terminated.

  As described above, according to the present embodiment, the authentication process is again performed on the person to be authenticated in which the shooting feature amount is stored, and when the authentication is successful, the authentication feature is stored in the IC chip 32 by the stored shooting feature amount. The registered feature amount is updated, and the photographed feature amount stored by the photographed feature amount acquired at the time of the second authentication process is updated. Therefore, as in the systems described in Patent Documents 1 and 2, the update time Therefore, it is no longer necessary to perform a process for obtaining a weighted average, and as a result, a process for updating a registered feature value stored in the IC chip 32 can be quickly performed. Further, since the person to be authenticated can immediately remove the ID card 30 from the authentication device immediately after shooting, it is possible to reduce troublesomeness when performing an operation for authentication.

  In the above-described embodiment, the registered feature amount is updated when the authentication is successful. However, at the start of the update process, first, the shooting feature amount associated with the ID information read by the card reader 10 is stored. It may be determined whether or not it is stored in the unit 16, and if this determination is affirmative, only the registered feature amount may be updated first before the authentication processing.

  In addition, in the above embodiment, when authentication of a valid authentication target person fails, the number and rate of authentication failure are recorded for the authentication target person, and the number and ratio of authentication failure satisfy a predetermined condition. The authentication target person is notified to the administrator who manages the authentication, and for the authentication target person, a new registered feature value is generated and the new registered feature value generated in the IC chip 32 of the ID card 30 is stored. It may be. Thereby, the accuracy of authentication for the person to be authenticated can be improved.

  Also, a history about the success or failure of authentication may be stored. As a result, it is possible to analyze the tendency and cause of failure in authenticating the authorized person to be authenticated. For example, it is possible to analyze whether authentication has failed for only a specific person, whether authentication has failed for a plurality of persons, the degree of authentication failure of the imaging unit, or the time zone, age, gender, etc. where authentication fails. .

  In the above embodiment, the authentication process is performed using the facial feature amount of the person to be authenticated, but the authentication process may be performed using the face image data itself. In addition, the authentication process may be performed using any biological information as long as it is unique to the person to be authenticated, such as an eye iris, a voice print, a fingerprint, and signature data.

The schematic block diagram which shows the structure of the authentication apparatus by embodiment of this embodiment. A flowchart showing processing performed in the present embodiment

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Authentication apparatus 10 Card reader 12 Image | photographing 14 Authentication process part 16 Storage part 18 Update part 20 Feature-value production | generation part 30 ID card 32 IC chip

Claims (3)

Information reading means for reading the ID information and the biometric information from an authentication card having a storage unit in which the ID information and biometric information of the person to be authenticated are stored;
Imaging means for capturing the biometric information by capturing the person to be authenticated;
Authentication processing means for performing authentication processing for comparing the read biometric information and the captured biometric information;
When the recognition target person is authenticated, the captured biological information storage unit stores the captured biological information in association with the read ID information;
When the authentication process is performed again for the person to be authenticated in which the captured biometric information is stored, the biometric information stored in the storage unit is updated with the captured biometric information stored in the captured biometric information storage unit, An authentication apparatus comprising: an updating unit that updates the captured biometric information stored in the captured biometric information storage unit with the captured biometric information acquired during the second authentication process. Information reading means for reading the ID information and the biometric information from an authentication card having a storage unit in which the ID information and biometric information of the person to be authenticated are stored;
Imaging means for capturing the biometric information by capturing the person to be authenticated;
In an authentication method in an authentication apparatus comprising an authentication processing means for performing an authentication process for comparing the read biometric information and the captured biometric information,
When the recognition target person is authenticated, the captured biometric information is stored in association with the read ID information,
When the authentication process is performed again for the person to be authenticated in which the captured biometric information is stored, the biometric information stored in the storage unit is updated with the captured biometric information stored in the captured biometric information storage unit,
An authentication method, comprising: updating imaging biometric information stored in the imaging biometric information storage unit with imaging biometric information acquired during the second authentication process. Information reading means for reading the ID information and the biometric information from an authentication card having a storage unit in which the ID information and biometric information of the person to be authenticated are stored;
Imaging means for capturing the biometric information by capturing the person to be authenticated;
In a program for causing a computer to execute an authentication method in an authentication device comprising an authentication processing means for performing an authentication process for comparing the read biometric information and the captured biometric information,
When the recognition target person is authenticated, the captured biometric information is stored in association with the read ID information;
A procedure for updating the biometric information stored in the storage unit with the captured biometric information stored in the captured biometric information storage means when the authentication process is performed again for the person to be authenticated in which the captured biometric information is stored. When,
And a procedure for updating the captured biometric information stored in the captured biometric information storage unit with the captured biometric information acquired during the second authentication process.

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