发明名称 |
COLOR CHARACTERIZATION WITH ENHANCED PURITY |
摘要 |
The present invention creates a color transform for transforming color image data from a device-independent color space to a device-dependent color space of a color device. A forward model is accessed which transforms color image data from the device-dependent color space to the device-independent color space. The forward model is iteratively inverted to obtain a plurality of distinct device-dependent data point value sets, wherein the device-dependent data point value sets are colorimetrically identical to each other in the device-independent color space. One device-dependent data point value set is then selected from the plurality of distinct device-dependent data point value sets based on the application of a color purity function to the plurality of distinct device-dependent data point value sets. The color transform is populated with the selected device-dependent data point value set. Because one device-dependent data point value set is selected from the plurality of obtained distinct device-dependent data point value sets based on the application of a color purity function, the inverse color transform provides the best color estimate among all color candidates that are colorimetrically equivalent, and accurately recovers original device-dependent color space values. |
申请公布号 |
WO2005109855(A3) |
申请公布日期 |
2007.10.25 |
申请号 |
WO2005US14648 |
申请日期 |
2005.04.29 |
申请人 |
CANON KABUSHIKI KAISHA;TIN, SIU-KEI |
发明人 |
TIN, SIU-KEI |
分类号 |
G03F3/08;G06F15/00;G09G5/02;H04N1/60 |
主分类号 |
G03F3/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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