发明授权
- 专利标题： Undercolor removal gray color replacement with improved device color linearity
- 专利标题（中）： 底色更换灰色更换，改进了设备颜色线性
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申请号： US12391443申请日： 2009-02-24
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公开(公告)号： US08305636B2公开(公告)日： 2012-11-06
- 发明人: Zhigang Fan , Martin S. Maltz , Yao Rong Wang , Alvaro Enrique Gil
- 申请人： Zhigang Fan , Martin S. Maltz , Yao Rong Wang , Alvaro Enrique Gil
- 申请人地址： US CT Norwalk
- 专利权人： Xerox Corporation
- 当前专利权人： Xerox Corporation
- 当前专利权人地址： US CT Norwalk
- 代理机构： Fay Sharpe LLP
- 主分类号： G06F15/00
- IPC分类号： G06F15/00
摘要：
A system and methods for performing UCR/GCR (Undercolor Removal/Gray Color Replacement) in a digital printer is provided. The system and method includes maximizing the linearity of a color mapping function mapping a device independent color to a device dependent color through linear filtering and performing color projection to ensure color accuracy. The system and methods reduces graininess of printed color images having flesh-tones by also including a K reduction step.
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