Patent ID: 6175640
Filing Date: 2001-01-16
Classification: G06K,G07C

Abstract:
A fingerprint comparing apparatus for judging the presence or absence of a coincidence between a first and a second image, comprising:a plurality of individual areas cut out of said first image being sequentially displaced over said second image, with degrees of coincidence between said individual areas and said second image being sequentially detected using coordinates of said second image as a reference, and a distribution of degrees of coincidence being detected for each of said individual areas;coordinates of the distributions of said degrees of coincidence being corrected with relative positions among said plurality of individual areas, and the distributions of the degrees of coincidence in said individual areas being summed up;the coincidence or non-coincidence of said images being judged from a peak value of said summed distributions;wherein degrees of coincidence between said individual areas and said second image are detected and corrected, thereby detecting the distributions of said degrees of coincidence, andwherein said degree correction comprises selection of a prescribed number of degrees of coincidence in a descending order of the degree of coincidence, setting the degrees of coincidence in a prescribed area around each of the selected degrees of coincidence to a central degree of coincidence, and setting other degrees of coincidence to a bottom level.