Invention Grant
- Patent Title: Reduction of dependence of color appearance on light source
- Patent Title (中): 减少颜色外观对光源的依赖
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Application No.: US12454964Application Date: 2009-05-26
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Publication No.: US07883168B2Publication Date: 2011-02-08
- Inventor: Yuko Yamamoto
- Applicant: Yuko Yamamoto
- Applicant Address: JP Tokyo
- Assignee: Seiko Epson Corporation
- Current Assignee: Seiko Epson Corporation
- Current Assignee Address: JP Tokyo
- Agency: Martine Penilla & Gencarella, LLP
- Priority: JP2001-047776 20010223; JP2001-143616 20010514
- Main IPC: B41J2/205
- IPC: B41J2/205
Abstract:
A look up table LUT with specific gray reproduction characteristics is used for converting RGB image data to multi-tone data of ink colors. The gray reproduction characteristics of LUT are set such that the color difference ΔE of a gray color area with an arbitrary tone level in the L*a*b* color system is kept at about 4 or less, assuming that the results are observed under two different light sources, such as standard light D50 and standard light A, respectively.
Public/Granted literature
- US20090244156A1 Reduction of dependence of color appearance on light source Public/Granted day:2009-10-01
Information query
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