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.:

US 8830545 B1

PDF
Full Text
Expired
Date of Patent:
Sep. 09, 2014

Filed:

Feb. 14, 2011
Applicant:

Naoaki Kodaira, Tokyo, JP;

Inventor:

Naoaki Kodaira, Tokyo, JP;

Assignees:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03F 3/08 (2006.01); H04N 1/64 (2006.01); G06K 9/00 (2006.01); G06K 9/46 (2006.01); G06K 9/38 (2006.01);
U.S. Cl.
CPC ...
G06K 9/4652 (2013.01); H04N 1/642 (2013.01); G06K 9/00449 (2013.01); G06K 9/38 (2013.01);
Abstract

A document image processing system includes an extraction portion, an estimation portion, a calculation portion, a substitution portion, and a generation portion. The extraction portion extracts first and second document elements of an inputted document image and a preprint data. The estimation portion estimates first and second representative colors due to first and second document elements in a color space, respectively. The calculation portion calculates first and second planes to separate the color space into first and second sub-spaces which each includes each of the first and second representative colors, respectively. The substitution portion substitutes a color of a first pixel of the first document elements with the first representative color and a color of a second pixel of the second document elements with the second representative color. The generation portion subtracts each of the substituted first pixel from each of the substituted second pixel to generate a difference image.


Find Patent Forward Citations

Kodaira, Naoaki. (2014). Document image processing system including pixel color substitution (U.S. Patent No. 8830545). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8830545

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