Systems and methods for deblocking sequential images by determining pixel intensities based on local statistical measures
AssigneeHeadplay (Barbados) Inc.
InventorsGerald M. Sherwood, Gregory K. Lancaster, Leonard T. Bruton, Danny D. Lowe
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Abstract
Systems and methods are presented for improving the quality of an image as perceived by the Human Vision System by smoothing block artifacts in an image. In one embodiment, smoothing is accomplished by identifying target pixels to be smoothed and then replacing the pixel values of the target pixels with values derived from statistically similar neighboring pixels. The statistically similar neighboring pixels are chosen based on specific measurement criteria from within a region identified to contain such neighbors.
Claims21
A method for deblocking an input image containing visibly objectionable block artifacts, said method comprising:
- deriving pixel values from corresponding pixels of said input image in combination with pixel values of statistically similar neighboring pixels within said input image, said derived pixel values comprising a deblocked version of said input image.
A method for deblocking an image, said method comprising:
- deriving pixel values of statistically similar neighboring pixels in said image;
- and replacing pixel values of said image with said derived pixel values.
A method for deblocking a video signal;
- said method comprising:
- traversing a frame of said video signal to select pixels;
- comparing each selected pixel to neighboring pixels according to certain statistical measures, said statistical measures pertaining to the luminance and chrominance planes of said video signal;
- and
- replacing pixel values of said traversed frame with pixels values derived by said comparing, said replacing occurring in a substitute frame of said video signal.
Dependencies are inferred from the claim text.