IMAGE COLLATING APPARATUS, IMAGE COLLATING METHOD, IMAGE COLLATING PROGRAM AND COMPUTER READABLE RECORDING MEDIUM STORED WITH IMAGE COLLATING PROGRAM

摘要

PROBLEM TO BE SOLVED: To provide an image collating apparatus, etc. capable of performing collation processing at high speed. SOLUTION: When images A and B are inputted from an image input part 101, a partial image feature calculating part 1045 calculates feature values of partial images of the two images. A maximum matching score position searching part 105 searches for a position of a partial image of the image B that attains to the highest matching score with each of the partial images of the image A. This searching area is narrowed down to the partial image selected according to the feature value. A movement-vector-based similarity score calculating part 106 calculates similarity between the images A and B from information related to the partial image whose movement vector has direction and length within a prescribed range among movement vectors presenting positional relation between a reference position for measuring the position of the partial image in the image A for each of the partial images and the position of the maximum matching score corresponding to the partial image searched out by the maximum matching score position searching part 105. The images as the object of collation may belong to the same category classified based on the feature values. COPYRIGHT: (C)2005,JPO&NCIPI