JP2006099374A - Biological information collation device and biological information collation system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a biological information collation device and system for notifying a user who is frequently unauthenticated of necessity for re-registration, and for promoting the user to re-register the registration data by preventing the user from feeling any discomfort. <P>SOLUTION: This biological information collation device is configured to preliminarily register biological information as biological identification information for personal authentication, and to acquire biological information for personal authentication from an authentication object person, and to collate the biological information with the biological identification information for personal authentication, and provided with an authentication deciding part 14 for deciding whether or not the personal authentication has been normally performed, a re-registration determination part 15 for determining whether or not the re-registration of the biological identification information is necessary based on the unauthenticated frequency calculated by storing the authentication results from the authentication deciding part and a re-registration notifying part 16 for notifying the user that the re-registration of the biological identification information is necessary based on the determination result of the re-registration determination part. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a biometric information collating apparatus and a biometric information collating system.

  Biometric information that can identify an individual such as an iris or a fingerprint is used for personal authentication. The personal authentication using the biometric information is a technique for performing personal authentication by comparing the biometric information of the person to be authenticated with biometric identification information held in advance. In order to realize this technique, biometric information registration processing and biometric authentication are performed. Information verification process. In the biometric information registration process, the biometric information of the person to be authenticated is acquired, the feature amount of the biometric information is extracted, converted into digital data, and stored in advance as biometric identification information. When the biometric information is acquired from the person to be authenticated, the collation process collates the authentication biometric information obtained by extracting the feature amount of the biometric information and converting it into digital data, and the biometric identification information held in advance, and the similarity Authenticate yourself.

By the way, in patent document 1, in order to acquire the biometric identification information (registration data) for performing personal authentication, the optimal biometric identification information is selected from a plurality of collected biometric information and registered data is registered. Iris recognition device registered as
JP 2001-292981 A

  However, in the case of the iris recognition apparatus of Patent Document 1, in order to register the optimal biological information, the biological information that is considered to be optimal is registered from a plurality of temporarily stored biological information. Thus, the quality of the feature quantity of the biometric information registered in this way is not always at a level at which authentication is performed accurately. For this reason, when biometric identification information with low feature quantity quality has been registered, there is a risk of frequent unauthenticating that reduces the similarity of collation. It will have a bad impression on usability.

  Accordingly, an object of the present invention is to notify a user who frequently receives unauthentication that re-registration is necessary and prevent re-registration of registration data in order to prevent the user from feeling uncomfortable. An object of the present invention is to provide a biometric information matching device and a biometric information matching system.

In order to solve the above points, the biometric information collation apparatus of the present invention employs the following configuration.
<Configuration 1>
A biometric information collation device that preregisters biometric information as biometric identification information for personal authentication and performs biometric authentication against the biometric identification information by collating the biometric information with the biometric identification information. In this case, it is necessary to re-register biometric identification information based on a verification determination unit that determines whether or not personal authentication has been performed normally and a frequency of non-authentication obtained by accumulating verification results from the verification determination unit. A re-registration determination unit that determines whether or not bio-identification information needs to be re-registered based on a determination result of the re-registration determination unit. .

<Configuration 2>
A counter that counts the normal number indicating the number of times that the personal authentication has been normally performed by the verification determination unit and the number of rejects indicating the number of times that the personal authentication is determined to be unauthenticated is provided for each individual, When the number of rejects of the counter exceeds a predetermined number within a certain time, it is determined that re-registration of biometric identification information is necessary.
<Configuration 3>
The re-registration determining unit determines that re-registration of biometric identification information is necessary based on a ratio between a normal number and a reject number within a predetermined time.
<Configuration 4>
A timer is provided for measuring an elapsed time indicating a time elapsed from the time when the verification process is performed a predetermined number of times by the verification determination unit and the identification is determined to have failed, and the re-registration determination unit has a predetermined elapsed time. The accumulated number of rejects is cleared when the value exceeds the specified value.

<Configuration 5>
The biometric information collation system of the present invention includes a registration database in which biometric information is registered in advance as biometric identification information for authenticating the user, a biometric information acquisition function for acquiring biometric information for authenticating the user, and the acquired biometric information. In a biometric information collating system having at least one collating means having a collating function for collating biometric identification information and performing personal authentication, collation determining means for determining whether or not personal authentication by the collating means has been performed normally. A re-registration determination unit that determines whether or not re-registration of biometric identification information is necessary based on the frequency of non-authentication obtained by accumulating the verification result from the verification determination unit, and a determination result of the re-registration determination unit And re-registration notification means for notifying that re-registration of biometric identification information is necessary.

<Configuration 6>
The re-registration judging means is provided with a counting means for counting the normal number indicating the number of times that the personal authentication is normally performed by the collation determining means and the number of rejects indicating the number of times that the personal authentication is determined to be non-authenticated for each individual. The biometric identification information is judged to be re-registered when the number of rejects of the counting means exceeds a predetermined number within a certain time.
<Configuration 7>
The re-registration determination means determines that re-registration of biometric identification information is necessary based on a ratio between the normal number and the reject number within a predetermined time.
<Configuration 8>
A time limit unit is provided for measuring an elapsed time indicating a time elapsed from the time when the authentication is determined to be unsuccessful after the verification by the verification determination unit, and the re-registration notification unit determines the elapsed time in advance. The accumulated number of rejects is cleared when the value exceeds the specified value.

<Configuration 9>
Collation management means for managing the biometric information collation system is provided, and the collation management means receives and accumulates the judgment results as to whether or not re-registration performed by each re-registration judgment means is necessary, and aggregates and statistics for each collation means It is characterized by processing.
<Configuration 10>
When the collation management means obtains the judgment result as to whether or not re-registration of each collation means is necessary, the collation result related to the obtained judgment result and the time when the collation was performed (year, month, day, hour, minute, second) ), And the determination result, the collation result, and the execution time are accumulated in a corresponding manner.
<Configuration 11>
The biometric information is preferably data relating to an iris, a fingerprint, a voiceprint, or a face.

  According to the biometric information collation apparatus of the present invention, based on the frequency of non-authentication obtained by accumulating collation results, notification that bioregistration information needs to be re-registered and prompting re-registration of biometric identification information Therefore, the user who has received the notification can re-register the biometric identification information. Therefore, the biometric identification information of the user who has been frequently subjected to inaccurate biometric information authentication is optimized, and the occurrence of non-authentication can be reduced. As a result, it is possible to prevent a decrease in the reliability of the user's biometric information collating device due to the non-authentication and to improve the reliability.

  Embodiments of the present invention will be described in detail with reference to the drawings. In the following description, the same constituent elements in the drawings used in each embodiment will be given the same reference numerals, and redundant description will be omitted as much as possible.

  The iris collating apparatus of the first embodiment has an iris data registration function and a collating function. Already, an iris pattern is obtained from a large number of users, the feature amount of the pattern is extracted, converted into digital data, and stored and managed in the iris registration information database as iris registration data. Such an iris collating device is shown in FIG.

Prior to the description of the iris verification device, the iris verification performed by the iris verification device will be described. Iris matching is to authenticate the person based on the feature quantity of the iris as a special physical feature (biometric), and the process includes registration processing and matching processing.
The registration process is a function of acquiring an iris pattern from an authentication target person, extracting a feature amount of the pattern, converting it into digital data, and storing it as iris registration data (biometric identification information). A function of acquiring an iris pattern from the image, extracting and digitizing the feature quantity of the pattern, comparing the iris verification data (authentication biometric information) obtained by digitization with the previously stored iris registration data, and authenticating the person It is.

By the way, for iris collation, iris registration data corresponding to the identification number (ID) of the user is acquired from the iris registration information database, and the iris generated based on the acquired iris registration data and the biometric information acquired from the authentication target person. One-to-one matching that authenticates a user who is given an ID number by collating the data, and a large number of iris registration data are acquired from the iris registration information database, and the acquired large number of iris registration data and authentication There is one-to-many matching for authenticating that the person to be authenticated is a member of the registered member by sequentially comparing the iris data generated based on the biological information acquired from the subject.
In the iris collating apparatus 10 of the first embodiment, a one-to-one matching will be described as an example in the two matching described above.

  As shown in FIG. 1, the iris collating apparatus according to the first embodiment cuts out an iris portion from a user image obtained by a video camera and acquires an iris pattern, and the acquired iris information acquisition unit 11 A feature amount extraction unit 12 that extracts and digitizes features of the gray value change of the iris pattern and generates iris data, and iris data generated by the feature amount extraction unit 12 is used as iris registration data (biometric identification information). A registrant list in which registration data and an ID are associated with each other is generated, and an iris registration information database 13 that holds and manages the registration list, and iris authentication data (authentication biometric information) generated based on an iris pattern acquired from an authentication target person ) And the iris registration data to obtain the similarity and authenticate the person to be authenticated based on the similarity. Authentication determination unit 14 that performs determination, accumulates the result of the authentication determination, obtains the frequency of non-authentication, and re-registers to determine whether re-registration of iris registration data is necessary based on the frequency of non-authentication A determination unit 15, a re-registration notification unit 16 that notifies that re-registration of iris registration data is necessary based on a determination result of the re-registration determination unit, and accepts input from the user, An operation display unit 17 for displaying contents according to processing, and a control unit 19 that controls and controls each unit are provided.

  The authentication determination unit 14 obtains the iris collation data obtained by converting from the iris pattern obtained from the user from the feature amount extraction unit 12, and is held and managed in the iris collation data and the iris registration information database 13. Comparison with iris registration data is performed, and if the similarity obtained by the comparison is large, it is determined that the person is the person, and if the similarity is small, it is determined that the authentication is not performed.

  The iris registration data held and managed in the iris registration information database 13 is rare but has poor quality. For example, the following are mentioned. That is, in the acquired eye image, registration data obtained from a narrow eye opening, registration data obtained from an image with a poor focus, registration data obtained from a blurred image, and image processing There is registration data obtained by mistake in the pupil position, and such iris registration data is referred to as having poor quality of the feature quantity in the data.

  The authentication determination unit 14 outputs an authentication result after the determination. Reject is defined as a similarity that is low when the iris collation data and the iris registration data are collated and is determined to be unauthenticated. In general, the iris collating device tries collation continuously for a predetermined number of times even when the rejection occurs. The number of retries can be arbitrarily set, but is generally set to several times based on design specifications.

  The authentication determination unit 14 includes a reject counter 141 that counts the number of rejects indicating the number of rejects, and a threshold holding memory 142 that holds a threshold for the number of rejects used to determine whether or not the personal authentication has passed. If the user is authenticated even once among the scheduled retries, the determination result is output as pass (OK). Along with the determination of acceptance (OK) as the authentication result, the number of rejects is output to the re-registration determination unit 15 and the operation display unit 17.

When the number of rejects indicated by the reject counter 141 exceeds the threshold value stored in the threshold value holding memory 142, the authentication result is output to the re-registration determination unit 15 and the operation display unit 17 as NG (NG).
Upon receiving the authentication result (OK / NG), the operation display unit 17 displays “authenticated as the person” or “failed to authenticate the person” on the display and displays the authentication result (OK / NG) to the user. Notice.

In the iris matching device, the feature quantity quality of the iris matching data converted from the iris pattern acquired from the user and the iris registration data held and managed in the iris registration information database is important, and these feature quantity qualities are authenticated. The success or failure of In order to maintain the feature quantity quality in the iris collation data converted based on the iris pattern obtained from the user for each collation, the iris pattern is acquired a plurality of times until one iris collation data is generated. Done. That is, in order to acquire optimal iris collation data, photographing for acquiring an iris pattern is performed a plurality of times.
Note that it is extremely rare that the quality of the iris collation data generated from the plurality of iris patterns acquired by re-taking is poor.

  In contrast, the iris registration data used for the verification is held and managed in the iris registration information database 13 without objectively judging the quality of the feature quantity in the registration iris data. The quality of the feature quantity may be poor, and if the user authentication is performed based on the low-quality iris registration data, there is a risk of non-authentication.

  The re-registration determination unit 15 receives and accumulates the output of the authentication result from the authentication determination unit 14, and the normal number indicating the number of times that the individual authentication is determined to pass by the individual based on the authentication result and the number of times the personal authentication has failed. A personal data counter 151 that counts the number of rejects indicating, a calculation unit 152 that calculates the frequency of non-authentication from the normal number and the reject number for each individual, a cumulative value of the normal number and the reject number for each individual, and the A re-registration data memory 153 that accumulates the frequency of non-authentication obtained by the computing unit 152; and a timer 154 that counts an elapsed time indicating a time that has elapsed since it was determined to be rejected (NG). Whether or not it is necessary to re-register the iris registration data based on the frequency of non-authentication obtained for each individual. To cross.

The re-registration determination unit 15 determines that the number of rejects of the individual data counter 151 exceeds a predetermined value within a certain time, and the value of the expression indicating the frequency of non-authentication exceeds a predetermined value. At this time, it is determined that re-registration of the registration data is necessary. When the re-registration determination unit 15 determines that re-registration is necessary, the re-registration determination unit 15 outputs to the re-registration notification unit 16 that registration data needs to be re-registered.
Further, when the elapsed time measured by the timer 154 exceeds a predetermined value, the cumulative value of the individual rejection number held in the re-registration data memory 153 is cleared to zero.

  The re-registration notification unit 16 notifies the user by displaying on the display of the operation display unit 17 that the re-registration of the iris registration data is necessary based on the determination result of the re-registration determination unit.

  The operation display unit 17 has a keyboard for accepting input from the user and a display for displaying a desired screen. The user can input, for example, a password or identification number (ID) from the keyboard. Further, based on the information from the re-registration notification unit 16, the display indicates that the re-registration of the iris registration data is necessary. As a result, the user can be notified that re-registration of the iris registration data is necessary.

  The one-to-one matching operation in the iris collating apparatus 10 according to the first embodiment will be described with reference to a flowchart (FIG. 2).

  When the operation display unit 17 receives an ID input from the user (S200), ID information (hereinafter simply referred to as ID) is sent to the iris registration information database 13. The iris registration information database 13 that has received the ID searches the registrant list that is held and managed using the ID as a key, and acquires the name of the person to be authenticated (step S201). The iris registration information database 13 searches for iris registration data associated with the ID (step S202). The authentication determination unit 14 performs matching between the acquired iris information and the searched iris registration data, and authenticates the person based on the similarity (step S203). The authentication determination unit 14 determines whether the personal authentication has been performed normally, and outputs the determination result to the re-registration determination unit 15 and the operation display unit 17 (step S204).

  If it is determined in S204 that the authentication is unauthenticated, the reject counter 141 (hereinafter simply referred to as Rej) is counted up (step S205). The authentication determination unit 14 determines whether or not the value of Rej is equal to or greater than a threshold value ThlRej that determines that the verification fails (NG) (step S206). When the value of Rej has not reached ThlRej, the process proceeds to S203. If the value of Rej is equal to or greater than ThlRej, the authentication determination unit 14 outputs that the verification is unacceptable (NG) to the operation display unit 17 and the re-registration determination unit 15 (step S207). The operation display unit 17 that has received the notification displays that the verification is unacceptable (NG).

If it is determined that the verification is acceptable (OK) in S204, the authentication determination unit 14 outputs a message indicating that the verification is acceptable (OK) to the operation display unit 17 and the re-registration determination unit 15 (step S208). The operation display unit 17 that has received the notification displays that the verification is acceptable (OK).
In step S207, the re-registration determination unit 15 that has received the OK notification controls the counter (step S209). In other words, upon receiving the OK notification, the re-registration determination unit 15 counts up AccNum (A) that is the total number of verification OK and RejNum (A) that is the total number of rejections. Specifically, in the case of collation with the person to be authenticated as Mr. A, if the collation is acceptable (OK), 1 is added to AccNum (A), which is the total number of times of Mr. A's collation, and Mr. A's The value of Rej is added to RejNum (A), which is the total number of rejects, and Rej is cleared to zero.

When the calculation unit 152 calculates the frequency of non-authentication from the normal number and the number of rejects for each individual, the re-registration determination unit 15 determines whether or not re-registration of registration data is necessary based on the calculation result. If it is determined that re-registration is necessary (step S210), the re-registration notification unit 16 displays a screen indicating that re-registration of registration data is necessary, and notifies the user to that effect (step S211).
The expression for determining whether to notify that re-registration of registration data is necessary may be an expression representing the frequency of rejection. For example, RejNum (A) / AccNum (A)
RejNum (A) / {AccNum (A) + RejNum (A)} may be used.

  As described above, according to the iris collation device of the present invention, the re-registration determination unit 15 receives the authentication result from the authentication determination unit 14 and the number of OK times and personal authentication that are determined to have passed individual authentication. The individual data counter 151 that counts the number of rejects determined to have failed, the calculation unit 152 that calculates the frequency of non-authentication from the individual normal number and the reject number, and the individual normal number and reject number And the re-registration data memory 153 for accumulating the accumulated values of the re-registration data to determine whether or not re-registration is necessary based on the frequency of non-authentication calculated and obtained. Is notified to the operation display unit 17 and displayed on the screen, the user can be prompted to re-register.

  Therefore, since the user who is frequently determined to be unauthenticated re-registers the iris registration data according to the display guidance, the iris registration data with poor feature quantity quality is deleted from the feature quantity database, so that the user authentication is normally performed. As a result, the authentication rate can be improved and the bad impression of the user on the iris matching device can be wiped out.

The configuration of the iris collation system of the second embodiment is shown in FIG.
The iris verification system is a system that manages entrance / exit with iris information. When a user who has already registered his / her iris data enters or exits the room, he / she can authenticate himself / herself by comparing the iris verification data acquired by the iris verification device installed at the gate with the iris registration data. It is a system that can enter and leave the room. There are usually a plurality of gates, which are the entrance / exit gates, and each is configured by an iris collation device 10 </ b> A to 10 </ b> C and a management device 40. The iris collation device and the management device installed at the plurality of gates are communicably connected via a communication line 30. The communication line 30 is preferably a local line such as a LAN (Local Area Network).
Hereinafter, the iris collating apparatus according to the second embodiment will be described in detail with reference to FIG.
Since the iris collating devices 10A to 10C of the second embodiment have the same block configuration, the iris collating device 10A will be described.
The iris matching device 10A extracts an iris information acquisition unit 11 that cuts out an iris portion from a user's image obtained by a video camera and acquires an iris pattern, and extracts a characteristic of a gray value change of the acquired iris pattern to obtain a digital code A feature quantity extraction unit 12 that converts data into data, an iris registration information database 13A that holds and manages the digital data generated by the feature quantity extraction unit 12 as iris registration data, and iris collation data converted from the acquired iris pattern; The authentication registration unit 14 performs matching with the iris registration data, authenticates the person based on the similarity, determines whether the person authentication is passed, and outputs the authentication result. The frequency of authentication is obtained, and re-registration of iris registration data is necessary based on the frequency of the non-authentication Re-registration determination unit 15A for determining whether or not, re-registration notification unit 16 for notifying that re-registration of iris registration data is necessary based on the determination of the re-registration determination unit, and receiving input from the user An operation display unit 17 that displays a message or the like to the user based on the display information, and a control unit 19 that controls and controls each unit are provided.

  The iris registration information database 13A receives from the feature amount extraction unit 12 the iris data that has been extracted from the user by the feature of the iris pattern obtained by the iris information acquisition unit 11 and converted into digital data. Is previously managed as iris registration data. In the first embodiment, the registrant list associated with the ID is included. However, the iris registration information database 13A according to the second embodiment does not necessarily require the registrant list associated with the ID. Does not have.

  The authentication determination unit 14 acquires the iris data converted from the iris pattern acquired from the user from the feature amount extraction unit 12, and the iris registration data stored and managed in the acquired iris collation data and the iris registration information database. If the similarity of collation is large, it is determined that the person is the person. If the similarity is small, the person is determined to be the non-person.

The authentication determination unit 14 determines whether the personal authentication has passed, and outputs an authentication result after the determination. Reject is defined as a similarity between the iris collation data and the iris registration data being small and determined to be unauthenticated. Normally, the iris collating apparatus retries collation several times continuously even if the rejection occurs. If it is determined that the authentication has succeeded even once among the several retries, the number of rejects is output to the re-registration determination unit 15A together with the determination of pass (OK) as the authentication result.
If all the retries are rejected, it is determined that the personal authentication has failed. In this case, the authentication result is determined to be rejected (NG), and the fact is output.
The authentication result (OK / NG) is also output to the operation display unit 17. The display of the operation display unit 17 displays “authenticated as principal” or “personal authentication failed”, and notifies the user of the authentication result (OK / NG).

The re-registration determination unit 15A receives and accumulates the output of the authentication result from the authentication determination unit 14, and indicates the normal number indicating the number of times that the personal authentication is determined to be acceptable for each individual from the authentication result and the number of times the personal authentication has failed. Individual data counter 151 that counts the number of rejects, counter 151A that counts the normal number and the number of rejects that have occurred in the device every predetermined time, and the frequency of non-authentication from the individual normal number and the number of rejects A calculation unit 152 for calculating the number of normals and rejections for each individual, the normal number and the number of rejections generated in the device every predetermined time, and the non-authentication obtained by the calculation unit 152 The re-registration data memory 153 for accumulating the frequency and the elapsed time indicating the time that has elapsed since the authentication was determined to be unacceptable (NG) Equipped with a timer 154,
The re-registration determination unit 15A receives and accumulates and outputs the output of the authentication result from the authentication determination unit, and determines whether or not re-registration of the iris registration data is necessary based on the frequency of non-authentication obtained for each individual. to decide.

The re-registration determination unit 15A determines whether the number of individual rejections of the individual data counter 151 exceeds a predetermined value within a predetermined time, or the value of an expression indicating the frequency of occurrence of individual rejections. When a predetermined value is exceeded, it is determined that re-registration of the registration data is necessary. When the re-registration determination unit 15A determines that re-registration of registration data is necessary, the re-registration determination unit 15A outputs to the re-registration notification unit 16 that re-registration of registration data is necessary.
Further, when the elapsed time counted by the timer 154 exceeds a predetermined value, the cumulative value of the number of individual rejections indicated by the re-registration data memory 153 is cleared to zero.

  The re-registration determination unit 15A determines the authentication result (OK / NG) from the authentication determination unit 14 and the normal number, the reject number, and the personal authentication that have occurred in the device every predetermined time. Is notified to the management apparatus 40 via the communication line 30.

  Based on the determination result of the re-registration determination unit, the re-registration notification unit 16 displays on the display of the operation display unit 17 that the re-registration of the iris registration data is necessary and notifies the user.

  The operation display unit 17 has an input keyboard and an output display. The user can input from the input keyboard. In response to the information from the re-registration notification unit 16, the display indicates that the re-registration of the iris registration data is necessary, and notifies the user.

  The management device (collation management means) 40 receives a determination result such as “re-registration of registration data is necessary” from the re-registration determination unit of each iris collation device from each iris collation device 10A to 10C via the communication line 30. Receive. When the determination result is received, the administrator is notified, the determination result (OK / NG) from the verification determination unit, the normal number of verifications and the number of rejections that occurred in the device at predetermined intervals, and determination The time and the determination result are accumulated, and the number of re-registrations of registration data for each iris collating device is totaled and statistical processing is performed.

When the management device 40 acquires the determination result determined by each re-registration determination unit, the management device 40 also acquires the determination result of collation and the time (year / month / day / hour / minute / second) when the collation was performed. Is managed in a corresponding manner.
An administrator who manages the iris collation system can know from the management apparatus where a situation has occurred in which re-registration of biometric identification information is required. It is possible to go to the gate and give appropriate advice to a user who needs re-registration, and store iris registration data with good feature quantity quality in the iris registration information database.

The operation of the iris collation system of the second embodiment will be described.
The iris collating devices 10A to 10C used in the iris collating system of the second embodiment employ one-to-many matching that collates the iris collating data acquired from the user with a large number of iris registration data. Since the operations of the iris collating devices 10A to 10C of the second embodiment are the same, the operation of the iris collating device 10A will be described with reference to FIG.
FIG. 5 is a flowchart of the re-registration determination process (one-to-many matching).
The re-registration determination unit 15A determines whether or not T time has elapsed since the previous collation (step S501). Upon receiving a notification from the re-registration determination unit 15A that more than T time has elapsed, the authentication determination unit 14 clears Rej (step S502). The authentication determination unit 14 performs matching between the acquired iris collation data and the iris registration data, and authenticates the person based on the similarity (step 503). The authentication determination unit 14 determines whether the personal authentication has been performed normally and outputs the collation result (step S504).

  When the collation result in S504 is unauthenticated, 1 is added to Rej (step S505). The authentication determination unit 14 determines whether or not the value of Rej is equal to or greater than ThlRej (step S506). When the value of Rej has not reached ThlRej, the process proceeds to step S503. If the value of Rej is equal to or greater than ThlRej, the authentication determination unit 14 displays the authentication NG on the operation display unit 17 and notifies the user (step S507).

  If it is determined in step S504 that the authentication is OK, the process proceeds to step S508. The fact that the authentication is OK is displayed on the operation display unit 17 to notify the user (step S508). For each user (Mr. X), AccNum (X), which is the total number of times of verification, and RejNum (X), which is the total number of rejections, are calculated (step S509). For example, when Mr. A is collated, if authentication is OK, 1 is added to AccNum (A), which is the total number of times Mr. A is collated, RejNum (A) is added with the value of Rej, and Rej is set to 0. To clear.

The re-registration determination unit 15A determines whether or not re-registration of registration data is necessary (step S10). In the determination, if the value of the following expression is equal to or greater than a predetermined value, the process proceeds to step S511. The expression for determining whether or not re-registration of registration data is necessary may be an expression representing the frequency of rejection, and may be, for example, RejNum (A) / AccNum (A).
The re-registration notification unit 16 displays on the operation display unit 17 that registration data needs to be re-registered, and notifies the user (step S511).

  When the re-registration determination unit 15A determines that re-registration of registration data is necessary, the re-registration determination unit 15A notifies the management apparatus 100 accordingly (step S512).

When the user is unauthenticated, the next verification process is usually performed immediately. In step S501, the elapsed time from the previous verification is checked, which is based on such user behavior. Therefore, if the time from the non-authentication to the start of the next verification process is within T time, the value of Rej is held as it is and added in step 509. When the time T is exceeded, the user changes, and it is determined that another user has performed the collation process, and the value of Rej is cleared to zero.
The method performed in step S501 is not limited to the above. For example, the value of Rej may be cleared to 0 for each matching process.

According to the iris collation system that manages the entrance and exit of the second embodiment, the iris collation devices 10A to 10C installed at a plurality of gates, and the management device 40,
The re-registration determination unit 15A of each iris matching device determines that re-registration of registration data is necessary based on the obtained frequency of non-authentication, and re-registration of registration data when it is determined that re-registration is necessary Is output to the re-registration notification unit 16 and the management device 40.
The management device 40 receives a determination result such as “re-registration of registration data is necessary” from each of the iris verification devices 10A to 10C via the communication line 30. When the determination result is received, the administrator is notified and the determination result is accumulated, and the number of re-registrations of the registration data for each individual person is collated for statistical processing. The cause of the rejection can be automatically pursued by the statistical processing.
The administrator can know from the management device 40 at which gate a situation that requires re-registration of biometric identification information has occurred. It is possible to go to the gate and give appropriate advice to a user who needs re-registration, and store iris registration data with good feature quantity quality in the iris registration information database.
In the first embodiment, only the user is notified that re-registration is necessary and prompted to re-register, but the user in that case may continue to use the iris verification device without re-registration. . In the second embodiment, by notifying the administrator, the administrator can request the user to re-register, and the registration data can be re-registered more reliably.

It is a block diagram of the iris collation apparatus of Example 1 concerning this invention. It is a flowchart which shows operation | movement (1 to 1 matching) of the iris collation apparatus of Example 1. FIG. It is a block diagram of the iris collation system of Example 2 concerning this invention. It is a block diagram of the iris collation device of Example 2. It is a flowchart which shows operation | movement (1 to many matching) of the iris collation apparatus of Example 2.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10, 10A, 10B, 10C Iris collation apparatus 11 Iris information acquisition part 12 Feature-value extraction part 13, 13A Iris registration information database 14 Authentication determination part 141 Reject counter 142 Threshold holding memory 15, 15A Re-registration judgment part 151 Individual data counter 151A Counter 152 Operation Unit 153 Re-Registration Memory 154 Timer 16 Re-Registration Notification Unit 17 Operation Display Unit 19 Control Unit 30 Communication Line 40 Management Device

Claims (11)

Biometric information is registered in advance as biometric identification information for personal authentication, and when biometric authentication information is acquired from a person to be authenticated, the biometric authentication is performed by comparing the authentication biometric information with the biometric identification information. In the information verification device,
An authentication determination unit that performs personal authentication based on the authentication biometric information and the biometric identification information;
A re-registration determination unit that determines whether or not re-registration of the biometric identification information is necessary based on the frequency of non-authentication obtained by accumulating authentication results from the authentication determination unit;
A re-registration notification unit for notifying that re-registration of the biometric identification information is necessary based on a determination result of the re-registration determination unit;
A biometric information collating apparatus comprising: A counter is provided that counts the number of normals indicating the number of times that the user authentication is normally performed by the verification determination unit and the number of rejects indicating the number of times the person authentication is determined to be unauthenticated,
The re-registration determination unit determines that re-registration of the biometric identification information is necessary when the number of rejects of the counter exceeds a predetermined number within a predetermined time. Biological information collation device.   3. The biometric device according to claim 2, wherein the re-registration determination unit determines that re-registration of the biometric identification information is necessary based on a ratio between the normal number and the reject number within a predetermined time. Information verification device. A timer is provided for measuring an elapsed time indicating the time that has elapsed since it was determined that the authentication failed and failed after a predetermined number of verifications by the verification determination unit,
The biometric information matching apparatus according to claim 2, wherein the re-registration determination unit clears the cumulative value of the number of rejects when the elapsed time exceeds a predetermined value. A registration database in which biometric information is pre-registered as biometric identification information for personal authentication, a biometric information acquisition function for acquiring biometric information for personal authentication, and the acquired biometric information and the biometric identification information are collated. In a biometric information matching system having at least one matching means having a matching function for performing authentication,
Collation determination means for determining whether or not the personal authentication by the collation means has been normally performed;
Re-registration judgment means for judging whether or not re-registration of the biometric identification information is necessary based on the frequency of non-authentication obtained by accumulating the collation results from the collation judgment means;
Re-registration notification means for notifying that re-registration of the biometric identification information is necessary based on the determination result of the re-registration determination means;
A biometric information matching system comprising: Providing a counting means for counting the normal number indicating the number of times that the personal authentication has been normally performed by the matching determination means and the number of rejects indicating the number of times the personal authentication is determined to be unauthenticated,
6. The re-registration judging means judges that re-registration of the biometric identification information is necessary when the number of rejects of the counting means exceeds a predetermined number within a certain time. Biometric information matching system.   The said re-registration judgment means judges that re-registration of the said biometric identification information is required based on the ratio of the said normal number in the predetermined time and the said rejection number. Biometric information matching system. A time limit unit is provided for measuring an elapsed time indicating a time elapsed from the time when the personal authentication fails and is determined to be rejected after a predetermined number of verifications by the verification determination unit;
7. The biometric information matching system according to claim 6, wherein the re-registration notification means clears the cumulative value of the number of rejects when the elapsed time exceeds a predetermined value. Providing collation management means for managing the biometric information collation system;
6. The collation management means receives and accumulates a judgment result as to whether or not re-registration performed by each of the re-registration judgment means is necessary, aggregates each collation means, and performs statistical processing. The biometric information matching system described.   When the collation management means obtains the determination result as to whether or not re-registration of each collation means is necessary, the collation result related to the obtained judgment result and the time when the collation was performed (year / month / date / time) The biometric information matching system according to claim 9, wherein the determination result, the matching result, and the execution time are accumulated in a corresponding manner. The biometric information collating apparatus according to claim 1 and the biometric information collating system according to claim 5, wherein the biometric information is data relating to an iris, a fingerprint, a voiceprint, or a face.

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