Face image candidate determination apparatus for authentication, face image candidate determination method for authentication, program, and recording medium

An apparatus for face image candidate determination for authentication, comprising a storage and at least one processor:

• the storage stores a reference face image in association with an attribute of the reference face image for each registered person,
• the storage stores a score threshold value for each combination of attributes of face images to be collated,
• the attribute is an attribute based on a feature of the face image,
• the score threshold value is a threshold value for determining that face images to be collated are likely to be of the same person,
• the processor configured to:
• acquire a face image of a person to be determined as a face image for determination,
• determine an attribute of the face image for determination,
• collate the reference face image with the face image for determination and calculates a score indicating a degree of matching, and
• select a reference face image satisfying the score threshold value as a face image candidate for authentication and selects the face image candidate and a calculated score thereof as authentication information of the face image for determination.

A computer-implemented method for a face image candidate determination for authentication, comprising:

• storing a reference face image in association with an attribute of the reference face image for each registered person,
• storing a score threshold value for each combination of attributes of face images to be collated,
• the attribute is an attribute based on a feature of a face image,
• the score threshold value is a threshold value for determining that face images to be collated are likely to be of the same person,
• acquiring a face image of a person to be determined as a face image for determination,
• determining an attribute of the face image for determination,
• collating the reference face image with the face image for determination and calculating a score indicating a degree of matching, and
• selecting a reference face image satisfying the score threshold value as a face image candidate for authentication and selects the face image candidate and a calculated score thereof as authentication information of the face image for determination.

A non-transitory computer readable recording medium with a program, wherein the program causes a computer to execute a method for a face image candidate determination for authentication, comprising:

• storing a reference face image in association with an attribute of the reference face image for each registered person,
• storing a score threshold value for each combination of attributes of face images to be collated,
• the attribute is an attribute based on a feature of a face image,
• the score threshold value is a threshold value for determining that face images to be collated are likely to be of the same person,
• acquiring a face image of a person to be determined as a face image for determination,
• determining an attribute of the face image for determination,
• collating the reference face image with the face image for determination and calculating a score indicating a degree of matching, and
• selecting a reference face image satisfying the score threshold value as a face image candidate for authentication and selects the face image candidate and a calculated score thereof as authentication information of the face image for determination.