| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an image collation device and an image collation method in which image collation is executed at high speed and similarity of images can be determined highly accurately. <P>SOLUTION: An image collation device 1 has: image dividing sections 22, 25 that divide the first image and the second image into a plurality of blocks; feature vector calculation sections 23, 26 that calculate a feature vector of the first image and a feature vector of the second image on the basis of the sum total and the square sum of a normalized pixel value of pixels included in each block regarding the first image and the second image; an upper limit value calculation section 27 that calculates an upper limit value of normalized cross collation of the first image and the second image on the basis of the feature vector of the first image and the feature vector of the second image by using a formula for calculating the upper limit value of normalized cross collation which is derived by using Lagrange's undetermined multiplication determining method; and a first collation section 28 that collates the first image and the second image on the basis of whether or not the upper limit value is a first threshold value or higher. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
