Invention Grant
- Patent Title: Color management of halftoned images
- Patent Title (中): 半色调图像的颜色管理
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Application No.: US11218966Application Date: 2005-09-02
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Publication No.: US08049929B2Publication Date: 2011-11-01
- Inventor: Robert Paul Loce , Beilei Xu , Raja Bala
- Applicant: Robert Paul Loce , Beilei Xu , Raja Bala
- Applicant Address: US CT Norwalk
- Assignee: Xerox Corporation
- Current Assignee: Xerox Corporation
- Current Assignee Address: US CT Norwalk
- Agency: Fay Sharpe LLP
- Main IPC: H04N1/405
- IPC: H04N1/405 ; H04N1/40

Abstract:
Aspects of color of a halftoned image are controlled or adjusted. A method for adjustment can include determining a color description of a color of an area or window associated with a target halftoned pixel, determining a desired adjustment to the color associated with the target pixel, determining a color change value based on the desired adjustment and the color description associated with the target pixel, combining the color change value with at least one value of the target halftoned pixel, thereby generating at least one combined target pixel value and quantizing the at least one combined target pixel value. For instance error diffusion and/or rank-ordered error diffusion is used to perform the quantization. Color adjustments can be based on user preference and/or calibration compensations between original and target devices.
Public/Granted literature
- US20070053003A1 Color management of halftoned images Public/Granted day:2007-03-08
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