Invention Grant
- Patent Title: Converting digital values corresponding to colors of an image from a source color space to a destination color space
- Patent Title (中): 将与源颜色空间的图像颜色对应的数字值转换为目标色彩空间
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Application No.: US12346732Application Date: 2008-12-30
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Publication No.: US08411106B2Publication Date: 2013-04-02
- Inventor: Arkady Ten , John S. Haikin
- Applicant: Arkady Ten , John S. Haikin
- 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:
Conversion of colors of an image from a source color space to a destination color space by use of both a color profile and an image profile. The source and destination color spaces are respectively represented by source and destination color space transformations associated with source and destination color profiles. Colors in an image are converted from the source color space to a device-independent color space, using the source color space transformation. A gamut mapping is determined from a source color gamut to a destination color gamut, by using a gamut boundary description constructed either from a source image profile which is separate from the source color profile, or from a destination image profile which is separate from the destination color profile. The gamut mapping is applied, and the gamut mapped colors are transformed from the device-independent color space to the destination color space, using the destination color space transformation.
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