Patent ID: 6188780
Filing Date: 2001-02-13
Classification: G06K

Abstract:
An image collation apparatus for determining whether a first image and a second image coincide with each other comprising:means for extracting a plurality of linear images in a first frame of said first image, said first frame being a contiguous subset of said first image;means for extracting a plurality of linear images in said second image;means for comparing successively each of said linear images in said first frame of said first image with each corresponding linear image of said second image and for producing coordinate values, of locations in said second image, for each of said linear images in said first frame when a coincidence occurs;means for successively selecting produced coordinate values for each of said linear images in said first frame;first detecting means for detecting a first relative positional relationship between a combination of said selected coordinate values in said first frame;means for extracting a plurality of linear images in a second frame of said first image, said second frame being a different contiguous subset of said first image;means for comparing successively each of said linear images in said second frame of said first image with each corresponding linear image of said second image and for producing coordinate values, of locations in said second image, for each of said linear images in said second frame when a coincidence occurs;means for successively selecting produced coordinate values for each of said linear images in said second frame;second detecting means for detecting a second relative positional relationship between a combination of said selected coordinate values in said second frame; andthird detecting means for detecting whether said first and second images coincide with each other based on the results of said first and second detecting means.