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:
Sep. 06, 2011
Filed:
May. 19, 2008
John Haikin, Fremont, CA (US);
John Haikin, Fremont, CA (US);
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
Preservation of rendering intent when a rendering model encapsulated in a transform-based profile is used in a measurement-based CMS. Source device color values are converted to generate perceptually rendered values using a perceptual transform of the transform-based color profile. Perceptually rendered appearance values of a color appearance space are generated by converting the perceptually rendered values using predefined ICC viewing conditions. Using a gamut mapping model (GMM), the generated appearance values are converted to generate destination device color values within a color gamut of a destination device. The GMM uses a PRMG boundary description and a gamut boundary description of the destination device to perform the mapping. A transform is constructed from the source device color values and the corresponding destination device color values. Color values of an image generated by the source device are converted to color values of a destination device using the constructed transform.