JP2018120301A - Face authentication system, face authentication method, and face authentication program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a technique that can maintain (recover) past authentication performance when a person is re-registered as an authentication target person.SOLUTION: A face authentication system 1 includes: an authentication unit comparing face data F of a person A to be authenticated with face data F stored in a storage unit M and authenticating the person A to be authenticated as an authentication target person B; a registration deletion unit storing face data F of the authentication target person B subjected to registration deletion as face data F of a non-authentication target person C in the storage unit M; and a registration unit identifying face data F related to a processing target person D from among the face data F of the non-authentication target persons C stored in the storage unit M, with a person P to be registered as the authentication target person B as the processing target person D, and storing the identified face data F in the storage unit M as the face data of the processing target person D.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a face authentication system, a face authentication method, and a face authentication program.

  2. Description of the Related Art A face authentication system that authenticates a person to be authenticated as a registered person to be authenticated by comparing face data including a face image or a feature amount thereof is known. In such a system, for example, the face of the person to be authenticated registered in the system is acquired by photographing the face of the person to be authenticated at the entrance of a security-managed area (such as a server room in the data center). Authentication is performed against the data.

  In such a face authentication system, a method has been proposed in which learning content is added to face data of a person to be authenticated as needed to improve authentication accuracy.

  In the biometric authentication device of Patent Document 1, dictionary information (person-specific feature information) is updated in order to reduce the influence of authentication performance degradation factors (such as input environment fluctuations and secular changes).

  In the face image collation apparatus of Patent Document 2, an input face image having a certain similarity with the initial registration face image is additionally registered as a reference face image separately from the initial registration face image registered in advance as a reference face image. By doing so, the face of the registrant himself and the definition range (person definition range) to be authenticated are expanded. As a result, a decrease in authentication accuracy is suppressed in response to changes in facial features and environment.

JP 2006-31103 A Japanese Patent No. 5390228 JP 2003-109010 A

  In the entrance / exit authentication device of Patent Document 3, when the user temporarily exits the security area, the user's face pattern is registered, and re-entry is controlled by collating with the face pattern at the time of re-entry. When the user re-enters, the registered face pattern becomes unnecessary and is deleted.

  When the registration as the authentication target person is deleted as described above, the face data of the authentication target person is usually deleted. For example, if a person is allowed to enter the server room for a maintenance period of one week, when that maintenance period ends, the person's registration as a person to be authenticated will be deleted and authentication will be performed. The face data is no longer necessary and is deleted.

  Here, in the above example, when the next maintenance period arrives and the person in charge is registered as the person to be authenticated, the same person as the person in charge in the previous maintenance period may be the person in charge. In this case, the same person will be registered as the person to be authenticated, but the learning content related to the face data has been lost due to the deletion of the face data at the time of deregistration (previous). The authentication accuracy will be lower than the end point.

  In the biometric authentication device of Patent Document 1 described above, handling of dictionary information when a registrant is unregistered is not considered. Then, the dictionary information is updated many times for a certain registrant, and even if the authentication performance is improved, the dictionary information is deleted by deregistration of the registrant. When the person is registered in the biometric authentication device again, the updated dictionary information is lost, so the authentication performance is lower than when the registration is deleted.

  In the face image collation apparatus of Patent Document 2 described above, the handling of the reference face image (added learning content) when the registrant is unregistered is not considered. Then, even if a large number of reference face images are added for a certain registrant and the authentication accuracy is improved, the reference face image is deleted by deregistration of the registrant. When the person is registered again in the face image collation device, the added reference face image is lost, so that the authentication performance is lower than when the registration is deleted.

  The present invention has been made in view of the above-described problems, and provides a technique capable of maintaining past authentication performance when a person is re-registered as an authentication target, in other words, recovering past authentication performance. With the goal.

[Configuration 1]
The face authentication system of the present invention is
A face authentication system that verifies face data consisting of a face image or a feature amount thereof and authenticates the person to be authenticated as a registered person to be authenticated,
A storage unit that stores the face data of the person to be authenticated and the face data of the person to be authenticated;
An authentication unit that verifies the face data of the person to be authenticated and the face data stored in the storage unit to authenticate the person to be authenticated as the person to be authenticated;
A deregistration unit that stores the face data of the person to be authenticated to be deregistered in the storage unit as the face data of the person to be unauthenticated;
The person who is registered as the person to be authenticated or the person who is registered as the person to be authenticated is the person to be processed, and the person to be processed is selected from the face data of the person to be unauthenticated stored in the storage unit. And a registration unit that stores the specified face data in the storage unit as the face data of the person to be processed.

[Configuration 7]
The face authentication method of the present invention includes:
A face authentication method for authenticating a person to be authenticated as a registered person to be authenticated by collating face data comprising a face image or a feature amount thereof,
An authentication process for comparing the face data of the person to be authenticated with face data stored in a storage unit and authenticating the person to be authenticated as the person to be authenticated;
Deregistration processing for storing the face data of the authentication subject to be deleted in the storage unit as the face data of the non-authentication subject;
The person who is registered as the person to be authenticated or the person who is registered as the person to be authenticated is the person to be processed, and the person to be processed is selected from the face data of the person to be unauthenticated stored in the storage unit. And registration processing for storing the specified face data in the storage unit as the face data of the person to be processed.

[Configuration 8]
The face authentication program of the present invention is
A face authentication program for verifying a person to be authenticated as a registered person to be authenticated by collating face data consisting of a face image or a feature amount thereof,
An authentication processing procedure for verifying the person to be authenticated as the person to be authenticated by comparing the face data of the person to be authenticated and face data stored in a storage unit;
A registration deletion processing procedure for storing the face data of the authentication subject to be deleted in the storage unit as the face data of the non-authentication target;
The person who is registered as the person to be authenticated or the person who is registered as the person to be authenticated is the person to be processed, and the person to be processed is selected from the face data of the person to be unauthenticated stored in the storage unit. And the registration process procedure for storing the specified face data in the storage unit as the face data of the person to be processed is executed.

  According to the configuration described above, when the registration of the authentication target person is deleted, the face data of the authentication target person is stored in the storage unit as face data of the non-authentication target person. Then, the face data of the person who was the authentication target person remains in the storage unit as the face data of the non-authentication target person. Then, from the face data of the non-authentication target person, data related to the process target person (person registered as the authentication target person or person registered as the authentication target person) is specified, and the process target person who is the authentication target person Registered as face data. As a result, since the face data when the person who was the authentication target is used in the past is used for the authentication of the processing target person, the authentication performance is improved as compared with the case where the past face data is not reused. That is, according to the above-described configuration, it is possible to maintain past authentication performance when a person is re-registered as an authentication subject, in other words, it is possible to recover past authentication performance. Note that “maintaining past authentication performance” or “recovery” is not limited to realizing exactly the same performance as past authentication performance. If months or years have passed since you were previously certified, your hairstyle and personality will change to some extent. Even in such a case, according to the above-described feature configuration, the effect of improving the authentication performance can be obtained as compared with the case where the face data is registered without being reused as a completely new authentication target person.

[Configuration 2]
In the face authentication system of the present invention, the registration unit compares the face data of the person to be processed with the face data of the person to be unauthenticated stored in the storage unit, and the person to be processed It may be configured to identify the face data regarding.

  According to the above-described configuration, the identification of the face data related to the processing target person is performed by collation of the face data.

[Configuration 3]
In the face authentication system of the present invention,
The storage unit stores the face data of the authentication subject in association with personal identification data of the authentication subject,
It is preferable that the registration unit is configured to store the specified face data in the storage unit as the face data of the processing target person in a state associated with the personal identification data of the processing target person. The personal identification data is information that can identify an individual, such as name and affiliation, and is information other than face data.

[Configuration 4]
In the face authentication system of the present invention,
The storage unit stores the face data of the authentication subject in association with personal identification data of the authentication subject,
The registration deletion unit, when storing the face data of the authentication target person to be deleted in the storage unit as the face data of the non-authentication target person, the individual of the authentication target person to be deleted The identification data may be deleted from the storage unit.

  According to the above configuration, the personal identification data is deleted from the storage unit when the registration of the authentication target person is deleted, and the face data of the non-authentication target person is stored in a state not associated with the personal identification data. Become. Thereby, it is possible to reduce a risk related to the storage of face data (for example, a risk when information leakage occurs), which is preferable.

[Configuration 5]
In the face authentication system of the present invention,
The storage unit stores the face data of the non-authenticated person in association with personal identification data of the non-authenticated person,
The registration unit compares the personal identification data of the processing target person with the personal identification data of the non-authentication target person stored in the storage unit, and specifies the face data related to the processing target person It may be configured as follows.

  According to the above-described configuration, the identification of the face data related to the processing target person is performed by collation of the personal identification data.

[Configuration 6]
In the face authentication system of the present invention, the storage unit includes a first storage unit that stores the face data of the person to be authenticated and a second storage unit that stores the face data of the person to be authenticated. It may be configured as follows.

  According to the present invention, it is possible to provide a technique capable of maintaining (recovering) past authentication performance when a person is re-registered as an authentication subject.

Block diagram showing the configuration of the face authentication system The figure explaining the outline and authentication processing of the face authentication system The figure explaining the registration deletion process in a face authentication system The figure explaining the registration process in a face authentication system Flow chart showing the processing procedure of authentication processing Flow chart showing processing procedure of registration deletion processing Flow chart showing processing procedure of registration process Flow chart showing processing procedure of update processing The figure explaining the outline and authentication processing of the face authentication system The figure explaining the registration deletion process in a face authentication system The figure explaining the registration process in a face authentication system The figure explaining the registration process in a face authentication system

(First embodiment)
Hereinafter, a face authentication system, a face authentication method, and a face authentication program according to the present embodiment will be described with reference to FIGS.

  The face authentication system 1 is a system that verifies face data including a face image or a feature amount thereof and authenticates the person A to be authenticated as a registered person B to be authenticated. The face authentication system 1 is installed in a server room of a data center, for example, and manages entrance to a management area. Specifically, the face authentication system 1 permits entry only to the authenticated person who has been authenticated as an authentication target person.

  The face authentication system 1 includes a terminal device 10, an electric control door 20, and a control device 30, as shown in FIG.

  In the face authentication system 1 of the present embodiment, as shown in FIG. 2, when a person P01 (authenticated person A) stands in front of the electric control door 20, the terminal device 10 captures the face of the person P01, Data F01 is generated. The control device 30 collates the face data F01 of the person P01 with the face data F02 to F05 of the person to be authenticated B stored in the first storage unit 31. If the face data match, the person P01 (authenticated person A) is authenticated as the person to be authenticated B. Then, the electric control door 20 is unlocked, and the person P01 can enter the management area. In the face authentication system 1 of the present embodiment, the face data F06 to F08 of the non-authenticating person C is stored in the second storage unit 32.

  The person A to be authenticated is a person who is authenticated by the face authentication system 1. The person to be authenticated B is a person registered in the face authentication system 1 as a person permitted to enter the management area. The non-authentication target person C is a person who does not correspond to the authentication target person B and is not permitted to enter the management area.

  The face data F is a face image or a feature amount thereof. A face image is an image obtained by photographing a human face with a camera or the like. The feature amount is an amount obtained by quantifying a human face feature in a face image. The face data F may include a plurality of face images and feature amounts. For example, the face data F may include a plurality of face images with different shooting time points, shooting angles and light amounts, and feature amounts based on the face images. The personal identification data I is information that can identify an individual, such as name and affiliation, and is information other than face data. For example, the personal identification data I02 is information including the name, company name, department, job title, employee number, management number, contact telephone number, etc. of the person P02.

  Hereafter, each structure of the face authentication system 1 is demonstrated, referring FIG. 2 suitably.

  The terminal device 10 is a device that is arranged near the entrance of the management area and acquires face data from the person A to be authenticated. Specifically, the terminal device 10 is configured with a camera, captures the face of the person P01 standing in front of the terminal device 10, and transmits the face data F01 to the control device 30.

  Specifically, in the present embodiment, a face image captured by the terminal device 10 is transmitted to the control device 30, and the control device 30 calculates a feature amount from the face image. Hereinafter, the face image and the feature amount will be collectively referred to as “face data” without being distinguished.

  The terminal device 10 may be configured with a card reader. And the face authentication system 1 shall be used in combination with face authentication or authentication with an ID card using a card reader, etc., and when one authentication is successful, the person A to be authenticated is authenticated as the person B to be authenticated. It may be configured.

  The electric control door 20 is a door whose unlocking / locking (or opening / closing) is controlled by the control device 30. The electric control door 20 is installed at the entrance of the management area. When the person A to be authenticated is authenticated as the person B to be authenticated, the control device 30 unlocks (or opens) the electric control door 20, and the person A to be authenticated can enter the management area. Become.

  The control device 30 controls the overall operation of the face authentication system 1 and performs various processes. The control device 30 includes a first storage unit 31, a second storage unit 32, a control unit 33, and a communication unit 34.

  The first storage unit 31 and the second storage unit 32 are configured by a storage device such as an HDD (Hard Disk Drive) or a nonvolatile RAM (Random Access Memory). The first storage unit 31 and the second storage unit 32 may be physically separate storage devices, or may be two storage areas provided in one storage device. Moreover, the 1st memory | storage part 31 and the 2nd memory | storage part 32 may be provided in the place (for example, server room) where the face authentication system 1 was provided, and may be a storage area on what is called a cloud. Hereinafter, the first storage unit 31 and the second storage unit 32 may be collectively referred to as a storage unit M.

  In the present embodiment, as conceptually shown in FIG. 1, face data F and personal identification data I of the person to be authenticated B are stored in the first storage unit 31. In the example of FIG. 2, for the four persons P02 to P05 who are the authentication target person B, the first storage unit in a state where the face data F02 to F05 and the personal identification data I02 to I05 are associated with each person. 31. That is, “registration” to the face authentication system 1 as a person to be authenticated B is that the face data F and personal identification data I of the person are stored in the storage unit M in a state of being associated with each other. means.

  The second storage unit 32 stores the face data F of the non-authenticated person C. In the example of FIG. 2, the face data F06 to F08 are stored in the second storage unit 32 for the three persons P06 to P08 who are non-authenticated persons C. In the present embodiment, the personal identification data I of the non-authentication target person C is not stored in the storage unit. That is, the face data F06 to F08 are stored in the second storage unit 32 in a state that is not associated with information such as a name that can identify an individual, in other words, the face data F alone. In FIG. 2, each face data F and the person P are expressed in a state where they are connected by a line. However, this is merely conceptually showing that the person P that is the source of the face data F exists. I'm just there.

  The control unit 33 includes an authentication unit 33a, an update unit 33b, a registration deletion unit 33c, and a registration unit 33d. The control unit 33 includes, for example, a software program for realizing various processes, a CPU that executes the software program, and various hardware that is controlled by the CPU. The software program and data necessary for the operation of the control unit 33 are stored in the storage unit M, but the storage destination is not particularly limited, and is stored in a storage device such as a disk or flash memory provided separately. There may be a mode in which data is stored in a server or a storage device that is connected to be communicable.

  The authentication unit 33a compares the face data F of the person A to be authenticated with the face data F stored in the storage unit M, and authenticates the person A to be authenticated as the person B to be authenticated. In this embodiment, the face data F01 of the person P01 who is the person to be authenticated A and the face data F02 to F05 of the person to be authenticated B stored in the first storage unit 31 are collated, and the face data F matches. In this case, the person P01 is authenticated as the person to be authenticated B. For example, as shown in FIG. 2, when face data F01 of person A to be authenticated matches face data F04, person A to be authenticated is authenticated as person P04 of person B to be authenticated.

  In the present embodiment and the subsequent embodiments, “face data match” is not only the case where face images and feature amounts are completely the same, but also the case where face data of the same person is determined by face authentication. including.

  The update unit 33b updates the face data F of the person to be authenticated B using the face data F of the person to be authenticated A and the person to be processed D. For example, the update unit 33b additionally registers the face data F of the person to be authenticated A and the person to be processed D with the face data F of the person to be authenticated B. In the example of FIG. 2, the person P01 who is the person A to be authenticated is authenticated as the same person as the person P04 who is the person B to be authenticated. Therefore, the face data F01 of the person P01 is added to the face data of the person P04. Since the face data F01 is face data related to an image newly captured by the terminal device 10 recently, there are cases in which the expression and the light amount are different from the past captured images. Therefore, by adding the face data F01 to the face data F04 related to the past photographed image, the authentication performance for the person P04 (person P01) can be improved. The update of the face data F by the updating unit 33b is performed when the person A to be authenticated is authenticated as the person B to be authenticated (the above example) or when the person B to be authenticated is registered by the registration unit 33d. . Note that the update of the face data F of the person B to be authenticated by the update unit 33b can be performed in various modes such as addition and registration of the face data F described above, as well as changes and adjustments of the feature amount related to the face data F.

  The registration deletion unit 33c causes the storage unit M to store the face data F of the authentication target person B whose registration is to be deleted as the face data F of the non-authentication target person C. In the present embodiment, the registration deletion unit 33c deletes the personal identification data I of the person to be authenticated B whose registration is to be deleted from the storage unit M.

  The operation of the registration deletion unit 33c will be described in detail with reference to FIG. A case where the registration of the person P05 who is the authentication target person B is deleted will be described. The face data F05 and personal identification data I05 of the person P05 are stored in the first storage unit 31 as data relating to the person to be authenticated B.

  The registration deletion unit 33c stores (copies) the face data F05 of the person P05 in the second storage unit 32. Then, the registration deletion unit 33c deletes the face data F05 and the personal identification data I05 stored in the first storage unit 31. That is, the face data F05 is moved from the first storage unit 31 to the second storage unit 32. As a result, the face data F05 is handled as face data of the non-authenticated person C thereafter. That is, the person P05 is deregistered as the authentication target person B and becomes the non-authentication target person C. In other words, the handling (or attribute) of the person P05 is changed from the authentication target person B to the non-authentication target person C. The personal identification data I05 is deleted from the storage unit M (the first storage unit 31 and the second storage unit 32).

  In this embodiment, the registration unit 33d uses the person P registered as the authentication target person B as the processing target person D, and the processing target person D from the face data F of the non-authentication target person C stored in the storage unit M. And the specified face data F is stored in the storage unit M as the face data of the person to be processed D. Specifically, the registration unit 33d collates the face data F of the processing target person D with the face data F of the non-authentication target person C stored in the storage unit M, and specifies the face data F related to the processing target person D. . The registration unit 33d stores the identified face data F in the storage unit M as the face data F of the processing target person D in a state in which the specified face data F is associated with the personal identification data I of the processing target person D.

  The operation of the registration unit 33d will be described in detail with reference to FIG. A case where the person P09 is registered as the person to be authenticated B will be described. That is, the person P09 is the processing target person D. First, the face data F09 and personal identification data I09 of the person P09 are prepared for registration and input to the control device 30.

  The registration unit 33d compares the face data F09 of the processing target person D with the face data F stored in the second storage unit 32, and specifies the face data F related to the processing target person D. As illustrated in FIG. 4, when the face data F09 of the processing target person D matches the face data F08, the registration unit 33d specifies that the face data F08 is face data related to the processing target person D. That is, the person P08 related to the face data F08 is actually the person P09 related to the processing target person D.

  Then, the registration unit 33d stores the identified face data F08 in the first storage unit 31 as the face data F09 of the processing target person D in a state in which the specified face data F08 is associated with the personal identification data I09 of the processing target person D. That is, as shown in FIG. 4, the face data F08 and the personal identification data I09 are stored in the first storage unit 31 as data of the person P09. As a result, the face data F08 is handled as face data of the person to be authenticated B thereafter. That is, the person P09 of the process target person D becomes the authentication target person B. The face data F08 stored in the second storage unit 32 is deleted from the second storage unit 32 by the registration unit 33d.

  In addition, when the face data F09 of the process target person D does not match the face data F stored in the second storage unit 32, the registration unit 33d stores the face data F09 and the personal identification data I09 of the process target person D. In the state associated with each other, the first storage unit 31 stores them. That is, in this case, the processing target person D has never been the authentication target person B of the face authentication system 1 in the past, and is the person registered in the face authentication system 1 for the first time.

  At this time, the update unit 33b may update the face data F08 using the face data F09 input for registration of the person P09 as the person to be authenticated B. The registration unit 33d specifies that the face data F09 and the face data F08 are the face data F of the same person P09. Therefore, the authentication performance for the person P09 can be improved by the update.

  The face authentication method performed by the face authentication system 1 described above will be described with reference to the flowcharts of FIGS. The face authentication method of the present embodiment includes an authentication process, a registration deletion process, a registration process, and an update process.

<Authentication process>
In the authentication process, the authentication unit 33a compares the face data F of the person A to be authenticated with the face data F stored in the storage unit M, and authenticates the person A to be authenticated as the person B to be authenticated. Specifically, the authentication process is performed as follows along the flowchart shown in FIG.

  In the input step of step S <b> 101, face data F of the person A to be authenticated is input to the face authentication system 1. Specifically, the terminal device 10 captures the face of the person A (person P01) to be authenticated and transmits the face data F01 to the control device 30. Then, the process proceeds to step S102.

  In the authentication step of step S102, the authenticating unit 33a compares the input face data F of the person A to be authenticated with the face data F stored in the storage unit M, and identifies the person A to be authenticated B Authenticate that In the present embodiment, the authentication unit 33a collates the face data F01 of the person P01 who is the person A to be authenticated with the face data F02 to F05 of the person B to be authenticated stored in the first storage unit 31. If the face data F matches, the person P01 is authenticated as the person to be authenticated B. Then, the process proceeds to step S103.

  In the unlocking step of step S103, the control unit 33 unlocks the electric control door 20. Then, the authentication process ends.

<Deregistration processing>
In the registration deletion process, the registration deletion unit 33c causes the storage unit M to store the face data F of the authentication target person B whose registration is to be deleted as the face data F of the non-authentication target person C. Specifically, the registration deletion process is performed as follows along the flowchart shown in FIG.

  In the input step of step S201, the face authentication system 1 is input to specify the authentication target person B whose registration is to be deleted. Specifically, the control device 30 accepts input of personal identification data I (name, management number, etc.) of the person to be authenticated B whose registration is to be deleted. Then, the process proceeds to step S202.

  In the specifying step of step S202, the registration deleting unit 33c specifies a person (for example, person P05) whose registration is to be deleted from the authentication target person B based on the input content received in step S201. Specifically, the person whose data matches by the registration deletion unit 33c comparing the personal identification data I of the person B to be deleted with the personal identification data I stored in the first storage unit 31. P is specified. Then, the process proceeds to step S203.

  In the copying step of step S203, the registration deletion unit 33c stores (copies) the face data F of the person whose registration is to be deleted in the second storage unit 32. For example, the face data F05 of the person P05 is stored (copied) in the second storage unit 32. Then, the process proceeds to step S204.

  In the deletion step of step S204, the registration deletion unit 33c deletes the face data F05 and personal identification data I05 of the person P05 from the first storage unit 31. Through the above copying step and deleting step, the personal identification data I of the person to be authenticated B whose registration is to be deleted is deleted from the storage unit M, and the face data F is moved from the first storage unit 31 to the second storage unit 32. Then, the registration deletion process ends.

<Registration process>
In the registration process of the present embodiment, the registration unit 33d performs processing from the face data F of the non-authentication target person C stored in the storage unit M with the person P registered as the authentication target person B as the processing target person D. The face data related to the subject person D is specified, and the specified face data F is stored in the storage unit M as the face data of the processing subject person D. In the present embodiment, the registration unit 33d compares the face data F of the processing target person D with the face data F of the non-authentication target person C stored in the storage unit M, and obtains the face data F related to the processing target person D. Identify. Then, the registration unit 33d stores the identified face data F in the storage unit as the face data F of the processing target person D in a state where the specified face data F is associated with the personal identification data I of the processing target person D. Specifically, the registration process is performed as follows along the flowchart shown in FIG.

  In the input step of step S301, information related to the person P (processing target person D) registered as the authentication target person B is input to the face authentication system 1. Specifically, the control device 30 receives input of face data F09 and personal identification data I09 regarding the person P09 who is the processing target person D. Then, the process proceeds to step S302.

  In the specifying step of step S302, the registration unit 33d compares the face data F09 of the processing target person D with the face data F stored in the second storage unit 32, and determines the face data F related to the processing target person D. Identify. For example, when the face data F09 of the processing target person D matches the face data F08, the registration unit 33d specifies that the face data F08 is face data related to the processing target person D. Then, the process proceeds to step S303.

  In the registration step of step S303, the registration unit 33d associates the identified face data F09 with the personal identification data I09 of the process target person D in the first storage unit 31 as the face data F09 of the process target person D. Remember me. That is, the face data F08 and the personal identification data I09 are stored in the first storage unit 31 as the data of the person P09. As a result, the face data F08 is handled as face data of the person to be authenticated B thereafter. That is, the person P09 of the process target person D becomes the authentication target person B. Then, the registration process ends.

<Update process>
In the update process, the update unit 33b updates the face data F of the person to be authenticated B using the face data F of the person to be authenticated A and the person to be processed D. Specifically, the update unit 33b additionally registers the face data F of the person A to be authenticated and the person D to be processed with the face data F of the person B to be authenticated. This update process is performed when the authentication process is performed and the face data F of the person A to be authenticated is input to the face authentication system 1 or when the registration process is performed and the face data F of the process target person D is the face authentication system 1. It is performed when input to. Specifically, the update process is performed as follows along the flowchart shown in FIG.

  In the input processing in step S401, face data F for performing update processing is input to the face authentication system 1. When the update process is performed when the authentication process is performed, the face data F of the person A to be authenticated is the input data. When the update process is performed when the registration process is performed, the face data F of the process target person D becomes the input data. Then, the process proceeds to step S402.

  In the update step of step S402, the update unit 33b updates the face data F of the person to be authenticated B using the input data. Specifically, the update unit 33b additionally registers the face data F of the person A to be authenticated and the person D to be processed with the face data F of the person B to be authenticated. When the update process is performed when the authentication process is performed, the face data F is updated for the authentication target person B authenticated as the same person as the person A to be authenticated. When the update process is performed when the registration process is performed, the face data F is updated for the person P registered as the person to be authenticated B. Then, the update process ends.

(Second Embodiment)
In the first embodiment described above, the face authentication system 1 is configured in such a manner that the personal identification data I of the non-authentication subject C is not stored in the storage unit M. In the second embodiment, the storage unit M stores the face data F of the non-authentication subject person C in association with the personal identification data I of the non-authentication subject person C. Accordingly, the operations of the registration deletion unit 33c and the registration unit 33d are different from those in the first embodiment. In the following description of the second embodiment, components similar to those in the first embodiment are denoted by the same reference numerals, and description thereof may be omitted.

  The second storage unit 32 stores the face data F and personal identification data I of the non-authentication subject C. In the example of FIG. 9, the face data F06 to F08 and the personal identification data I06 to I08 are stored in the second storage unit 32 for the three persons P06 to P08 that are the non-authentication target person C. That is, the face data F06 to F08 are stored in the second storage unit 32 in a state associated with information that can identify an individual such as a name.

  The registration deletion unit 33c causes the storage unit M to store the face data F of the authentication target person B whose registration is to be deleted as the face data F of the non-authentication target person C. In the present embodiment, the registration deletion unit 33c does not delete the personal identification data I of the authentication target person B whose registration is to be deleted from the storage unit M.

  The operation of the registration deletion unit 33c will be described in detail with reference to FIG. A case where the registration of the person P05 who is the authentication target person B is deleted will be described. The face data F05 and personal identification data I05 of the person P05 are stored in the first storage unit 31 as data relating to the person to be authenticated B.

  The registration deletion unit 33c stores (copies) the face data F05 and the personal identification data I05 of the person P05 in the second storage unit 32. Then, the registration deletion unit 33c deletes the face data F05 and the personal identification data I05 stored in the first storage unit 31. That is, the face data F05 and the personal identification data I05 are moved from the first storage unit 31 to the second storage unit 32. As a result, the face data F05 is handled as face data of the non-authenticated person C thereafter. That is, the person P05 is deregistered as the authentication target person B and becomes the non-authentication target person C. In other words, the handling (or attribute) of the person P05 is changed from the authentication target person B to the non-authentication target person C. Unlike the first embodiment, the personal identification data I05 is not deleted from the storage unit M, but simply moved from the first storage unit 31 to the second storage unit 32.

  Similar to the first embodiment, the registration unit 33d uses the person P registered as the authentication target person B as the processing target person D, and processes the face data F of the non-authentication target person C stored in the storage unit M. The face data related to the subject person D is specified, and the specified face data F is stored in the storage unit M as the face data of the processing subject person D. Unlike the first embodiment, the registration unit 33d collates the personal identification data I of the processing target person D with the personal identification data I of the non-authentication target person C stored in the storage unit M, and the processing target person Face data F relating to D is specified. Then, the registration unit 33d stores the identified face data F in the storage unit as the face data F of the processing target person D in a state where the specified face data F is associated with the personal identification data I of the processing target person D.

  The operation of the registration unit 33d will be described in detail with reference to FIG. A case where the person P09 is registered as the person to be authenticated B will be described. That is, the person P09 is the processing target person D. First, the face data F09 and personal identification data I09 of the person P09 are prepared for registration and input to the control device 30.

  The registration unit 33d compares the personal identification data I of the processing target person D with the personal identification data I of the non-authentication target person C stored in the second storage unit 32, and obtains the face data F related to the processing target person D. Identify. In other words, the registration unit 33d, for example, from the face data F of the non-authentication target person C stored in the second storage unit 32 based on the personal identification data I such as a name and an employee number, The face data F is specified. As illustrated in FIG. 11, when the personal identification data I09 of the processing target person D matches the personal identification data I08, the registration unit 33d specifies that the face data F08 is face data related to the processing target person D. That is, the person P08 related to the face data F08 is actually the person P09 related to the processing target person D.

  Then, the registration unit 33d stores the identified face data F09 in the first storage unit 31 as the face data F09 of the processing target person D in a state associated with the personal identification data I09 of the processing target person D. That is, as shown in FIG. 11, the face data F08 and the personal identification data I09 are stored in the first storage unit 31 as data of the person P09. As a result, the face data F08 is handled as face data of the person to be authenticated B thereafter. That is, the person P09 of the process target person D becomes the authentication target person B. The face data F08 becomes the face data F09 of the person P09. The face data F08 and personal identification data I08 stored in the second storage unit 32 are deleted from the second storage unit 32 by the registration unit 33d.

  The face authentication method performed by the face authentication system 1 according to the second embodiment is slightly different from the first embodiment due to the difference in the aspect of the face authentication system 1. This will be described below.

<Deregistration processing>
In the registration deletion process of the present embodiment, the personal identification data I of the person whose registration is to be deleted is not deleted from the storage unit M but moved to the second storage unit 32.

  In the copying step of step S203, the registration deletion unit 33c stores (copies) the face data F and personal identification data I of the person whose registration is to be deleted in the second storage unit 32. For example, the face data F05 and personal identification data I05 of the person P05 are stored (copied) in the second storage unit 32. Then, the process proceeds to step S204.

  In the deletion step of step S204, the registration deletion unit 33c deletes the face data F05 and personal identification data I05 of the person P05 from the first storage unit 31. Through the above copying step and deleting step, the face data F and the personal identification data I are moved from the first storage unit 31 to the second storage unit 32. Then, the registration deletion process ends.

<Registration process>
In the registration process of the present embodiment, the registration unit 33d differs from the first embodiment in that the personal identification data I of the processing target person D and the personal identification data I of the non-authentication target person C stored in the storage unit M are used. The face data F related to the processing subject D is specified by collation.

  In the specifying step of step S302, the registration unit 33d collates the personal identification data I09 of the processing subject D with the personal identification data I stored in the second storage unit 32, and the face data related to the processing subject D Specify F. For example, when the personal identification data I09 of the processing target person D matches the personal identification data I08, the registration unit 33d specifies that the face data F08 is face data related to the processing target person D. Then, the process proceeds to step S303.

(Third embodiment)
In the first embodiment and the second embodiment described above, the registration process is performed with the person P registered in the face authentication system 1 as the person to be authenticated B as the person to be processed D. It is also possible to modify this and perform the registration process with the person P registered in the face authentication system 1 as the person to be authenticated B as the person to be processed D. FIG. 12 illustrates an example in which the registration process is performed with the person P09 who is the authentication target person B as the processing target person D.

  The registration unit 33d compares the face data F09 of the person P09 who is the processing target person D with the face data F stored in the second storage unit 32, and specifies the face data F related to the processing target person D. As illustrated in FIG. 12, when the face data F09 of the processing target person D matches the face data F08, the registration unit 33d specifies that the face data F08 is face data related to the processing target person D. That is, the person P08 related to the face data F08 is actually the person P09 related to the processing target person D.

  Then, the registration unit 33d stores the identified face data F09 in the first storage unit 31 as the face data F09 of the processing target person D in a state associated with the personal identification data I09 of the processing target person D. That is, as shown in FIG. 12, the face data F08 and the personal identification data I09 are stored in the first storage unit 31 as data of the person P09. As a result, the face data F08 is handled as face data of the person to be authenticated B thereafter.

  As described above, in the face authentication system 1 according to the third embodiment, the person P who has already been registered in the face authentication system 1 as the person to be authenticated B when the registration unit 33d performs the registration process. D. That is, the face data F of the person to be processed D is in a state stored in the first storage unit 31. For example, when a certain person P is registered in the face authentication system 1, it is registered using the face image taken at that time, and registered by the registration unit 33 d at night when the processing load of the face authentication system 1 is small. It is conceivable to execute the processing in a batch process. In such a case, the registration process according to the third embodiment is useful.

(Other embodiments)
(1) In the above-described embodiment, the authentication unit 33a has described a mode in which the face data F of the person A to be authenticated is compared with the face data F of the person B to be authenticated stored in the first storage unit 31. . The authentication unit 33a modifies the face data F of the person A to be authenticated and the face data F of the person to be authenticated B stored in the first storage unit 31 and the second storage unit 32, that is, the entire storage unit M. May be matched. In this case, even if the face data F of the person A to be authenticated matches the face data F of the person C to be unauthenticated, the person A to be authenticated is not permitted to enter the management area, and the electric control door 20 Not open.

(2) In the above-described embodiment, the control device 30 is configured to include two storage units, the first storage unit 31 and the second storage unit 32. That is, the storage unit M is divided into two. Then, the face data F of the person to be authenticated B is stored in the first storage unit 31, and the face data F09 of the person to be authenticated C is stored in the second storage unit 32. A configuration in which the control device 30 has one storage unit or a configuration in which three or more storage units are included is also possible. That is, the face data F09 of the authentication subject person B and the non-authentication subject person C may be stored in one storage unit, or may be distributed and stored in three or more storage units.

(3) There are no particular restrictions on the installation locations of the first storage unit 31 and the second storage unit 32. For example, the first storage unit 31 is installed in the vicinity of a plurality of management areas, and the face data F of the person to be authenticated B related to the installed management area is stored in each first storage unit 31, and each management area is stored. It is also possible to have a mode in which the second storage unit 32 is installed in the headquarters that oversees and the face data F of the unauthenticated person C is centrally managed.

(4) In the above-described embodiment, the case where the face authentication system 1 manages entry to a management area such as a data center server room has been described as an example. The face authentication system 1 is applicable not only to such admission management. For example, the present invention can be applied to a case where a person passing by a camera is photographed and a specific person is detected / notified. In this case, the “passing person” corresponds to the person A to be authenticated, and the “specific person” to be detected corresponds to the person B to be authenticated. In this case, face data of “specific person” photographed by the camera or face data of “specific person” prepared separately is registered. At this time, the “specific person” corresponds to the processing target person D, and the processing target “specific person” from the face data F of the non-authentication target person C registered as “specific person” in the past. The face data F of the person D is identified and stored in the first storage unit 31 as the face data F of the person D to be processed.

(5) In the above-described embodiment, “registration” to the face authentication system 1 as the person to be authenticated B is performed by the storage unit M in a state where the face data F and the personal identification data I of the person are associated with each other. The personal identification data I is not essential. For example, if at least the face data F of the person permitted to enter is stored in the storage unit M, the face data F of the person A to be authenticated can be checked and allowed to enter. Further, if at least the face data F of the “specific person” to be detected is stored in the storage unit M, the face data F of the “passing person” can be collated to detect / notify the “specific person”. . That is, “registration” means that at least the face data F is stored in the storage unit M.

  In addition, each configuration illustrated in the above-described embodiment is functionally schematic, and does not necessarily need to be physically configured as illustrated. That is, the form of distribution / integration of each device is not limited to that shown in the figure, and all or a part thereof may be functionally or physically distributed / integrated in an arbitrary unit according to various loads or usage conditions. Can be configured.

  As described above, the face authentication system and the like according to the present invention can provide a technique capable of improving authentication performance when a person is re-registered as an authentication target person.

1: Face authentication system 10: Terminal device 20: Electric control door 30: Control device 31: First storage unit 32: Second storage unit 33: Control unit 33a: Authentication unit 33b: Update unit 33c: Registration deletion unit 33d: Registration Unit 34: communication unit A: person to be authenticated B: person to be authenticated C: person to be authenticated D: person to be processed F: face data I: personal identification data M: storage unit P: person

Claims (8)

A face authentication system that verifies face data consisting of a face image or a feature amount thereof and authenticates the person to be authenticated as a registered person to be authenticated,
A storage unit that stores the face data of the person to be authenticated and the face data of the person to be authenticated;
An authentication unit that verifies the face data of the person to be authenticated and the face data stored in the storage unit to authenticate the person to be authenticated as the person to be authenticated;
A deregistration unit that stores the face data of the person to be authenticated to be deregistered in the storage unit as the face data of the person to be unauthenticated;
The person who is registered as the person to be authenticated or the person who is registered as the person to be authenticated is the person to be processed, and the person to be processed is selected from the face data of the person to be unauthenticated stored in the storage unit. A registration unit that identifies the face data relating to, and stores the identified face data in the storage unit as the face data of the person to be processed;
A face authentication system.   The said registration part collates the said face data of the said process target person, and the said face data of the said non-authentication target person memorize | stored in the said memory | storage part, and specifies the said face data regarding the said process target person. The face authentication system according to 1. The storage unit stores the face data of the authentication subject in association with personal identification data of the authentication subject,
The said registration part is memorize | stored in the said memory | storage part as the said face data of the said process subject person in the state linked | related with the personal identification data of the said process subject person with the specified said face data. Face recognition system. The storage unit stores the face data of the authentication subject in association with personal identification data of the authentication subject,
The registration deletion unit, when storing the face data of the authentication target person to be deleted in the storage unit as the face data of the non-authentication target person, the individual of the authentication target person to be deleted The face authentication system according to claim 1, wherein identification data is deleted from the storage unit. The storage unit stores the face data of the non-authenticated person in association with personal identification data of the non-authenticated person,
The registration unit compares the personal identification data of the processing target person with the personal identification data of the non-authentication target person stored in the storage unit, and specifies the face data related to the processing target person The face authentication system according to claim 1 or 2.   The said memory | storage part has a 1st memory | storage part which memorize | stores the said face data of the said authentication object person, and a 2nd memory | storage part which memorize | stores the said face data of the said non-authentication object person. The face authentication system according to item. A face authentication method for authenticating a person to be authenticated as a registered person to be authenticated by collating face data comprising a face image or a feature amount thereof,
An authentication process for comparing the face data of the person to be authenticated with face data stored in a storage unit and authenticating the person to be authenticated as the person to be authenticated;
Deregistration processing for storing the face data of the authentication subject to be deleted in the storage unit as the face data of the non-authentication subject;
The person who is registered as the person to be authenticated or the person who is registered as the person to be authenticated is the person to be processed, and the person to be processed is selected from the face data of the person to be unauthenticated stored in the storage unit. A registration process for identifying the face data relating to, and storing the identified face data in the storage unit as the face data of the person to be processed;
A face authentication method. A face authentication program for verifying a person to be authenticated as a registered person to be authenticated by collating face data consisting of a face image or a feature amount thereof,
An authentication processing procedure for verifying the person to be authenticated as the person to be authenticated by comparing the face data of the person to be authenticated and face data stored in a storage unit;
A registration deletion processing procedure for storing the face data of the authentication target person to be deleted in the storage unit as the face data of the non-authentication target person;
The person who is registered as the person to be authenticated or the person who is registered as the person to be authenticated is the person to be processed, and the person to be processed is selected from the face data of the person to be unauthenticated stored in the storage unit. A registration processing procedure for identifying the face data relating to, and storing the identified face data in the storage unit as the face data of the person to be processed;
A face authentication program that makes a computer execute.