Dictionary generation system, dictionary generation method, and a dictionary generator

摘要

This dictionary generation system (300) is characterized by: acquiring a first distance within a feature quantity space between a selected area which is selected from among a first group of areas in a first image and a first area and a second distance within a feature quantity space between the selected area and a second area, said first area being an area selected from among the first group of areas other than the selected area, and said second area being an area selected from among a second group of areas in a second image; determining whether or not the selected area should be used as a dictionary pattern on the basis of the ratio between the first distance and second distance which were acquired; and registering the selected area in a dictionary where a group of dictionary patterns are stored if the determination result suggests that the selected area be used as a dictionary pattern.