Patent Document ID: 20110229042
Application ID: 13131813
Patent Status: 0

Claim One:
1. An image signature matching device, comprising: a margin region specifying unit for specifying, from an image signature of a first image and an image signature of a second image, a margin region of each of the images, wherein the image signature of the first image and the image signature of the second image are generated by a generation method including: extracting region features from respective sub-regions of a plurality of pairs of sub-regions in an image; for each of the pairs of sub-regions, quantizing a difference value between the region features of two sub-regions forming a pair; and generating a collection of elements which are quantization values calculated for the respective pairs of sub-regions as an image signature to be used for discriminating the image, and a matching unit for matching the image signature of the first image and the image signature of the second image in such a manner that a weight of an element, in which at least one of two sub-regions forming a pair is included in the specified margin region, is reduced.