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:
Jul. 19, 2011
Filed:
May. 02, 2008
Shugo Higuchi, Inagi, JP;
Shugo Higuchi, Inagi, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A color signal conversion apparatus for converting a color signal of an input gamut to a color signal of an output gamut is provided. First, a target gamut for gamut mapping carried out on the input gamut is set, after which an evaluation function is determined for evaluating the difference between the target gamut and the results of gamut mapping performed on the input gamut using initialized mapping parameters. Then, the mapping parameters are determined based on the evaluation function so that the difference is minimum. The color signal of the input gamut is then mapped to the output gamut based on the determined mapping parameters and constraining conditions. This makes it possible to achieve favorable gamut mapping based on optimal mapping parameters that have been determined automatically.