Invention Grant
US07956868B2 Gamut map model with improved gradation fidelity at low chroma values
有权
色域映射模型，在低色度值下具有改进的灰度保真度
- Patent Title: Gamut map model with improved gradation fidelity at low chroma values
- Patent Title (中): 色域映射模型，在低色度值下具有改进的灰度保真度
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Application No.: US11862128Application Date: 2007-09-26
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Publication No.: US07956868B2Publication Date: 2011-06-07
- Inventor: Jared Wayne Takeo Clock
- Applicant: Jared Wayne Takeo Clock
- Applicant Address: US CA San Mateo
- Assignee: Konica Minolta Systems Laboratory, Inc.
- Current Assignee: Konica Minolta Systems Laboratory, Inc.
- Current Assignee Address: US CA San Mateo
- Agency: Chen Yoshimura LLP
- Main IPC: G09G5/02
- IPC: G09G5/02
Abstract:
An improved gamut map model (GMM) useful in conjunction with Windows Color System (WCS). The method uses the WCS Minimum Color Difference (MinCD) GMM to handle gamut mapping for the Saturation rendering intent at low input chroma values. For input values to the gamut map model profile (GMMP), if the chroma value C falls within a predetermined chroma value range, the MinCD GMM will be applied, otherwise the Hue Mapping GMM is applied. The predetermined chroma value range can be determined by experimentation. The range is 0≦C≦10 in a preferred embodiment. This method will improve the gradation fidelity of the rendered images and reduce or prevent major hue shifts at low chroma values. The method may be implemented as a plug-in utility for a computer.
Public/Granted literature
- US20090079755A1 GAMUT MAP MODEL WITH IMPROVED GRADATION FIDELITY AT LOW CHROMA VALUES Public/Granted day:2009-03-26
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