Image analysis – Image enhancement or restoration – Artifact removal or suppression
Patent
1994-11-04
1998-09-01
Bost, Dwayne D.
Image analysis
Image enhancement or restoration
Artifact removal or suppression
382236, 382261, G06K 940
Patent
active
058022180
ABSTRACT:
The visibility of mosquito and blocking artifacts in a video compression system (200) are effectively suppressed by calculating a post-processed pixel intensity. A post-processed pixel intensity is determined (100) using a predetermined noise variance, a predetermined autocorrelation coefficient, and a local neighborhood of pixels that includes a plurality of previously post-processed pixel intensities and a plurality of original pixel intensities. This eliminates the dependency on local signal and noise power estimates.
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Bost Dwayne D.
Johnson Brian L.
Motorola Inc.
Stockley Darleen J.
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