Invention Application
WO2008086601A1 SYSTEM AND METHOD FOR ADAPTIVE CONTRAST ENHANCEMENT OF VIDEO SIGNALS
审中-公开
用于自适应对比度增强视频信号的系统和方法
- Patent Title: SYSTEM AND METHOD FOR ADAPTIVE CONTRAST ENHANCEMENT OF VIDEO SIGNALS
- Patent Title (中): 用于自适应对比度增强视频信号的系统和方法
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Application No.: PCT/CA2008/000069Application Date: 2008-01-16
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Publication No.: WO2008086601A1Publication Date: 2008-07-24
- Inventor: JIA, Yunwei , KARUTA, Bonaventure
- Applicant: GENNUM CORPORATION , JIA, Yunwei , KARUTA, Bonaventure
- Applicant Address: 970 Fraser Drive Burlington, Ontario L7L 5P5 CA
- Assignee: GENNUM CORPORATION,JIA, Yunwei,KARUTA, Bonaventure
- Current Assignee: GENNUM CORPORATION,JIA, Yunwei,KARUTA, Bonaventure
- Current Assignee Address: 970 Fraser Drive Burlington, Ontario L7L 5P5 CA
- Agency: PERRY, Stephen J. et al.
- Priority: US11/653,521 20070116
- Main IPC: H04N5/57
- IPC: H04N5/57 ; H04N9/64
Abstract:
A method for contrast enhancement of a video signal comprises receiving a video signal frame, gathering statistics about the video signal frame, calculating the effective input dynamic range of the video signal frame, calculating the effective output dynamic range of the video signal frame, and constructing a transform to enhance the picture in the video signal frame by mapping the effective input dynamic range to the effective output dynamic range via the transform.
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