Partial image retrieval method, the partial image retrieval apparatus, the partial image retrieval program, and a partial image retrieval program computer-readable recording medium recording the

摘要

PROBLEM TO BE SOLVED: To provide a partial image retrieval system, method and program capable of reducing the information quantity of indexes to reduce a storage capacity necessary for holding the indexes while causing retrieval omission.;SOLUTION: In this partial image retrieval device for detecting a position containing a similar partial image from a group of accumulated images, indexes are assigned to accumulated partial area characteristics, respectively, accumulated partial area characteristics similar to an intended partial area characteristic are extracted as retrieval candidate characteristics by use of the indexes, the distance of each retrieval candidate characteristic from the intended partial area characteristic is calculated, and whether the similar partial image is present in the group of accumulated images or not is determined based on the distance. For a position of an accumulated image in which the partial image similar to the intended image is determined to be present in a collation result determination part, a collation window of the same size as an intended image is set to the accumulated characteristics to calculate the distance from the intended characteristic, and whether the partial image similar to the intended image is present in this position in the group of accumulated images or not is determined based on the characteristic distance.;COPYRIGHT: (C)2006,JPO&NCIPI