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An image feature extractor (11) has a feature vector extraction means (102) for extracting a feature vector from a pattern image, a quality index extraction means (106) for extracting quality index information of the pattern image, an error distribution information storing means (105) wherein error...

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Bibliographic Details
Main Author TOSHIO KAMEI
Format Patent
LanguageEnglish
Published 17.06.1998
Edition6
Subjects
CALCULATING
COMPUTING
COUNTING
IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
PHYSICS
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Summary:An image feature extractor (11) has a feature vector extraction means (102) for extracting a feature vector from a pattern image, a quality index extraction means (106) for extracting quality index information of the pattern image, an error distribution information storing means (105) 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 (107) for obtaining confidence estimation information referring to the error distribution information retrieved with the quality index information. An image feature matching system identifies feature information of an image pattern extracted by the image feature extractor (11) by comparing it to registered feature information.
Bibliography:Application Number: GB19970026599