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. 26, 2011
Filed:
Oct. 26, 2007
Yosuke Hayase, Kawasaki, JP;
Yosuke Hayase, Kawasaki, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An image processing method includes creating a conversion table for converting a color in a device-independent color space into a color in a device color space based on a colorimetry result of a color patch output by a device. Creating the conversion table includes converting a color in a three-dimensional color space dependent on a device into a color in a four-dimensional device color space including black. Converting a color in the three-dimensional color space includes separating an input color in the three-dimensional device-dependent color space into color components of the four-dimensional device color space based on a gradation from the input color to black, using a black generation curve of a gray line set by a user and black generation curves set for individual primary colors of RGBCMY, and performing saturation-increase conversion on the color components in accordance with an amount of a black colorant.