Invention Grant
- Patent Title: Method and system for sharpening the luma and the chroma signals
- Patent Title (中): 用于锐化亮度和色度信号的方法和系统
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Application No.: US12353826Application Date: 2009-01-14
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Publication No.: US09407890B2Publication Date: 2016-08-02
- Inventor: Jaewon Shin , Brian Schoner , Darren Neuman , David Wu
- Applicant: Jaewon Shin , Brian Schoner , Darren Neuman , David Wu
- Applicant Address: US CA Irvine
- Assignee: BROADCOM CORPORATION
- Current Assignee: BROADCOM CORPORATION
- Current Assignee Address: US CA Irvine
- Agency: Foley & Lardner LLP
- Agent Joseph N. Ziebert; Helen H. Zhang
- Main IPC: H04N9/77
- IPC: H04N9/77 ; H04N9/64

Abstract:
A video processing system may be operable to utilize multi-band sharpening to process luma signals for image signals. The luma signal may be decomposed into a plurality of frequency band components, wherein each component may be processed separately using different sharpening gains and/or offsets. The multi-band processed components may be combined to generate sharpened output luma signals. The multi-band sharpening may be performed utilizing peaking processing, and the input luma signal and/or LTI sharpened luma signals may be combined with the multi-band peaking sharpened signals to generate the sharpened output luma signals. Corresponding chroma signals may also be adjusted to generate sharpened output chroma signals. Luma and/or chroma sharpening operations may be further adjusted based on coring, clipping avoidance, luma statistics, color region detections, and/or curve control parameters. Sharpened output image signals may be generated based on the sharpened output luma signals and the sharpened output chroma signals.
Public/Granted literature
- US20090180030A1 METHOD AND SYSTEM FOR SHARPENING THE LUMA AND THE CHROMA SIGNALS Public/Granted day:2009-07-16
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