A face image registration device includes an image input unit that inputs face images of a subject person, and an others face retention unit that retains a plurality of others faces. The device further includes: a false alarm characteristic calculation unit that collates the face images of the subject person with the retained others faces, and calculates a false alarm characteristic of the face images of the subject person; a correct alarm characteristic calculation unit that collates the face images of the subject person with each other to calculate a correct alarm characteristic of the face images of the subject person; and a registration face image selection unit that selects a registration face image from the face images of the subject person by using the false alarm characteristic of the face images of the subject person and the correct alarm characteristic of the face images of the subject person.
Face image registration device and method