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 7280690 B1

PDF
Full Text
Expired
Date of Patent:
Oct. 09, 2007

Filed:

Feb. 13, 2004
Applicant:

Masaki Nogiwa, Kanagawa, JP;

Inventor:

Masaki Nogiwa, Kanagawa, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06K 9/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

A gradation correction curve creation apparatus for creating gradation correction curves for improving color reproducibility in UCR process includes a first gradation correction curve creation section creating a first gradation correction curve based on measured density values and target density values of monochromatic patches, a second gradation correction curve creation section creating a second gradation correction curve based on measured calorimetric values and target calorimetric values of gray patches, a start position calculation section calculating start positions on the first and second gradation correction curves at which the gray component in color mixture starts replacement with K through UCR process, and a gradation correction curve combining section creating a third gradation correction curve by smoothly connecting the more shadowed side of the first gradation correction curve than the start position and the more highlighted side of the second gradation correction curve than the start position.


Find Patent Forward Citations

Nogiwa, Masaki. (2007). Gradation correction curve creation method, gradation correction curve creation apparatus, and gradation correction curve creation program storage medium (U.S. Patent No. 7280690). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7280690

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