Invention Grant
US08665290B2 Image-based source gamut adjustment for compression-type gamut mapping algorithm
有权
用于压缩型色域映射算法的基于图像的源色域调整
- Patent Title: Image-based source gamut adjustment for compression-type gamut mapping algorithm
- Patent Title (中): 用于压缩型色域映射算法的基于图像的源色域调整
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Application No.: US12474272Application Date: 2009-05-28
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Publication No.: US08665290B2Publication Date: 2014-03-04
- Inventor: Rocklin Sloan
- Applicant: Rocklin Sloan
- Applicant Address: JP Tokyo
- Assignee: Canon Kabushiki Kaisha
- Current Assignee: Canon Kabushiki Kaisha
- Current Assignee Address: JP Tokyo
- Agency: Fitzpatrick, Cella, Harper & Scinto
- Main IPC: G09G5/02
- IPC: G09G5/02

Abstract:
Color management which converts source device colors into counterpart colors in a destination device color space. Device independent source and destination device gamut boundaries are obtained. A color image is generated in the source device color space. The color image is transformed into an image in a device independent color space. A gamut boundary for the device independent image is generated, based on the content of the device independent image. The source device gamut boundary is shrunk in a hue symmetric manner, such that color hues do not change, until it touches the image gamut boundary. Colors of the device independent image are mapped onto a gamut of the destination device by invoking a compression-type gamut mapping algorithm that uses the modified source device gamut boundary and the destination device gamut boundary to perform gamut mapping. The gamut mapped colors are converted into colors in destination device dependent color space.
Public/Granted literature
- US20100302271A1 IMAGE-BASED SOURCE GAMUT ADJUSTMENT FOR COMPRESSION-TYPE GAMUT MAPPING ALGORITHM Public/Granted day:2010-12-02
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