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:
Mar. 19, 2002
Filed:
Sep. 29, 1998
Applicant:
Inventor:
Shin-Ywan Wang, Tustin, CA (US);
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06K 9/00 ;
U.S. Cl.
CPC ...
G06K 9/00 ;
Abstract
A system to identify features of a color document in which primary color values representing a color document are input, a threshold binarizing range is calculated based on the input values, the input values are binarized into binary values based on the threshold binarizing range, a colored region is identified within the document, and a frame is defined surrounding the identified colored region. A second threshold binarizing range is calculated based on input primary values corresponding to the colored region, and the input primary values corresponding to the colored region are binarized into binarized values based on the second threshold binarizing range.