Invention Grant
- Patent Title: Device and method for processing color image data
- Patent Title (中): 用于处理彩色图像数据的设备和方法
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Application No.: US12516785Application Date: 2007-11-20
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Publication No.: US08441498B2Publication Date: 2013-05-14
- Inventor: Matheus J. G. Lammers , Petrus M. De Greef
- Applicant: Matheus J. G. Lammers , Petrus M. De Greef
- Applicant Address: US CA San Diego
- Assignee: Entropic Communications, Inc.
- Current Assignee: Entropic Communications, Inc.
- Current Assignee Address: US CA San Diego
- Agency: Duane Morris LLP
- Agent Bruce Greenhaus; Richard Bachand
- Priority: EP06125110 20061130
- International Application: PCT/IB2007/054707 WO 20071120
- International Announcement: WO2008/065575 WO 20080605
- Main IPC: G09G5/02
- IPC: G09G5/02

Abstract:
The present invention relates to a video processing device comprising a luminance and saturation detector (LSHD) for detecting the luminance values (lum) and the saturation values (sat) of pixels of an input video signal (IN); and a white-point, saturation and hue modulator (WSH) for transforming luminance and saturation properties (lum, sat) of the pixels of the input video signal (IN) into white-point, saturation and hue correction factors (W, Wc; S, Sc; H, Hc). The video device also comprises a color gamut matrix generating unit (CGMG) for generating a color gamut matrix in the perception domain based on the white-point, saturation and hue correction factors (Wc, Sc, Hc) of the white-point, saturation and hue modulator (WSH); a color gamut mapping unit (20) for multiplying the pixels of the input video signal (IN) with a color gamut matrix generated by the color gamut matrix generating unit (CGMG); and a clipping unit (31) for clipping the results of the a color gamut mapping unit (20) which are out of a predefined range.
Public/Granted literature
- US20100020242A1 DEVICE AND METHOD FOR PROCESSIGN COLOR IMAGE DATA Public/Granted day:2010-01-28
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