System for and method of sharpness enhancement for coded digital video
AssigneeKoninklijke Philips Electronics N.V.
InventorsYibin Yang, Lilla Boroczky
Life of this patent
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Abstract
A method and system for calculating a UME for each pixel in a frame of video data. A system for enhancing sharpness of a coded digital video signal representative a frame of block-based data is provided, comprising: a system for calculating a UME of each pixel in the frame in accordance with a frame type, wherein the calculating system includes: a mechanism that defines local spatial features in the frame; a mechanism that analyzes block-based motion estimation for the frame; a mechanism that detects a scene change in the frame; and a sharpness enhancer that improves sharpness to a decoded version of the digital video signal based on said UME.
Claims29
A system for enhancing sharpness of a coded digital video signal representative of a frame of block-based data, said system comprising:
- a system for calculating a usefulness metric for enhancement (UME) of each pixel in the frame in accordance with a frame type, wherein the calculating system includes:
- a mechanism that defines local spatial features in the frame;
- a mechanism that analyzes block-based motion estimation for the frame;
- and
- a mechanism that detects a scene change in the frame;
- and
- a sharpness enhancer that improves sharpness to a decoded version of the digital video signal based on said UME.
A method for enhancing sharpness of a coded digital video signal representative of a frame of block-based data, the method comprising:
- defining local spatial features in the frame;
- analyzing block-based motion estimation for the frame;
- detecting a scene change in the frame;
- calculating a usefulness metric for enhancement (UME) of each pixel in the frame based on local spatial features, block-based motion estimation and detected scene changes;
- and
- improving sharpness of the frame by applying the UME calculated for each pixel.
A program product stored on a recordable medium for calculating a usefulness metric for enhancement (UME) for each pixel in a frame of video data, the program product comprising:
- means for defining local spatial features in the frame;
- means for analyzing block-based motion estimation for the frame;
- means for detecting a scene change in the frame;
- and
- means for calculating the UME using the defining means, analyzing means, and detecting means.
Dependencies are inferred from the claim text.