Feature attribute calculation device, feature quantity extraction device, pattern matching device, method and program

摘要

An object of the present invention is to provide an apparatus that can accurately detect the correspondence relation of pattern features even when a pattern is deformed. The apparatus detects a stream line from a pattern signal (S1), sets a stream line coordinate system determined by the stream line (S2), and calculates an attribute of the pattern feature based on the stream line coordinate system (S3).