Passage management computer program product, passage management method, and passage management device

A passage management method executed by a control unit, the passage management method comprising:

• acquiring identification information of a user read by a reading unit that is installed in a passage area and that reads the identification information from an authentication medium;
• acquiring a photographed image of the passage area;
• specifying, among one or more face image regions in the photographed image, a face image region of a user who is carrying the authentication medium as a passerby face image;
• and
• when the passerby face image matches with a pre-stored face image corresponding to the identification information, authenticating the user who is carrying the authentication medium as an authorized person, and when the passerby face image does not match with the pre-stored face image, authenticating the user who is carrying the authentication medium as an unauthorized person, wherein
• the specifying includes
• specifying a carrying part of the authentication medium in a body of a user captured in the photographed image, from the photographed image, and
• among the one or more face image regions in the photographed image, specifying the face image region of the user having the specified carrying part as a part of the body, as the passerby face image.

A passage management device comprising:

• an identification information acquisition unit that acquires identification information of a user read by a reading unit that is installed in a passage area and that reads the identification information from an authentication medium;
• a photographed image acquisition unit that acquires a photographed image of the passage area;
• a specification unit that, among one or more face image regions in the photographed image, specifies a face image region of a user who is carrying the authentication medium as a passerby face image;
• and
• an authentication unit that, when the passerby face image matches with a pre-stored face image corresponding to the identification information, authenticates the user who is carrying the authentication medium as an authorized person, and when the passerby face image does not match with the pre-stored face image, authenticates the user who is carrying the authentication medium as an unauthorized person, wherein
• the specification unit specifies the face image region of the user by
• specifying a carrying part of the authentication medium in a body of a user captured in the photographed image, from the photographed image, and
• among the one or more face image regions in the photographed image, specifying the face image region of the user having the specified carrying part as a part of the body, as the passerby face image.