1 : An image search method comprising: a normalization step of extracting a plurality of regions from one or more model images and normalizing the regions as standard regions; a classification step of setting a specific region in each normalized standard region and classifying the plurality of standard regions under two or more subsets on the basis of a feature of the specific region; a recursive classification step of iteratively performing an operation of setting an other specific region at a location different from that of said specific region in each standard region classified in each subset and classifying the plurality of standard regions under still more subsets on the basis of a feature of the other specific region; and an output step of outputting the locations of the specific regions in the standard regions in the respective classifications and the features of the specific regions in the classifications.