Removal of block encoding artifacts
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United States of America Patent
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Feb 21, 2006
Grant Date -
Mar 20, 2003
app pub date -
Jul 2, 2001
filing date -
Jul 2, 2001
priority date (Note) -
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status (Latency Note)
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Abstract
A method of reducing artifacts in an image previously processed by block transform encoding may comprise the steps of: determining block boundaries; determining an approximate metric of artifact visibility; optionally interpolating across block boundaries; adaptively filtering luminance; optionally adaptively filtering chrominance; adaptively adjusting local saturation variation; and adaptively simulating high spatial frequency image detail;
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