| 摘要 |
PROBLEM TO BE SOLVED: To provide a mechanism that attains improvement in personal authentication accuracy.SOLUTION: Provided area a collation processing part 1343 that performs; a first collation process of collating a first authentication object image serving as an image of a right side half of a mouth when viewing from an authentication objet person in a second mouth area image with a first registration image, which is extracted from the first mouth area image and includes teeth positioned on a right side of a mouth of an authentication registrant and adjacent to upper/lower and right/left directions; a second collation process of collating a second authentication object image serving as an image of a left side half of the mouth when viewing from the authentication object person in a second mouth area image with a second registration image, which is extracted from the second mouth area image and includes teeth positioned on a left side of the mouth of the authentication registrant and adjacent to upper/lower and right/left directions; and a third collation process of collating a third authentication object image serving as a teeth area image of the authentication object person with a third registration image serving as the teeth area image of the authentication registrant, and an authentication processing part 1344 that performs an authentication process of the authentication object person on the basis of collation process results in the first to third collation processes. |
