In a person identification apparatus, a normalized face image is used to identify a person. When the face image of the person is input, a face area extraction section extracts the face area from the face image. A feature point extraction section extracts a plurality of candidates of feature points from...http://www.google.de/patents/US5982912?utm_source=gb-gplus-sharePatent US5982912 - Person identification apparatus and method using concentric templates and feature point candidates
