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:
Feb. 25, 2003
Filed:
Jan. 27, 2000
Applicant:
Inventor:
Mitsutoshi Arai, Tokyo, JP;
Assignee:
NEC Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06K 9/36 ;
U.S. Cl.
CPC ...
G06K 9/36 ;
Abstract
A dot angle conversion unit converts the dot angle of image data in an image area, separated by a boundary tracing unit , into 0 degree or 45 degrees. An in-mark correlation checking unit determines a dot frequency of the image data whose dot angle has been converted. A mark re-dividing unit generates small-sized marks based on the dot frequency. A match determination unit checks if a library contains a mark that matches the extracted mark. If the library contains a matching mark, the match determination unit outputs both the extracted mark and the matching mark in the library to a match template processing unit