An image feature extractor, an image feature analyzer and an...

Details An image feature extractor, an image feature analyzer and an... An image feature extractor, an image feature analyzer and an...

G - Physics

06

K

G06K 9/46 (2006.01) G06K 9/00 (2006.01)

Patent

CA 2224770

For providing an efficient image pattern matching system, an image feature extractor of the invention comprises a feature vector extraction means for extracting a feature vector from the pattern image, a quality index extraction means for extracting quality index information of the pattern image, an error distribution information storing means wherein error distribution information representing correlation between error distribution of the feature vector and the quality index information is prepared, and a confidence attribution means for obtaining confidence estimation information referring to the error distribution information retrieved with the quality index information. The image feature analyzer prepares the error distribution information. An image feature matching system collates feature information of an image pattern extracted by the image feature extractor by comparing it to registered feature information.

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