The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 05, 2001
Filed:
Mar. 02, 2000
Toshio Kamei, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
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 errors 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.