发明名称 Color appearance space to CMYK mapping
摘要 Color management which converts internal color appearance space color values to CMYK device values. CMY values are interpolated from a plurality of CMY to color appearance space lookup tables, wherein each CMY table is associated with a specific value of K. A target internal color value is received and one of the plurality of CMY lookup tables is selected based on a lightness value and neutrality of the target internal color value. A CMY value is interpolated from the selected lookup table and the target internal color value. The interpolated CMY value together with the associated K value from the selected table is provided as the converted CMYK color value. Advantageously, the conversion effects control over the output K value in a color appearance space to CMYK conversion. Accordingly, both neutral and non-neutral colors can be reproduced with better accuracy and higher quality.
申请公布号 US7505625(B2) 申请公布日期 2009.03.17
申请号 US20050245244 申请日期 2005.10.07
申请人 CANON KABUSHIKI KAISHA 发明人 HAIKIN JOHN
分类号 G06K9/00;G03F3/08;G06F15/00;G06K15/02;H04N1/40 主分类号 G06K9/00
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