System and method for reducing ringing artifacts in images
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United States of America Patent
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Jun 23, 2009
Grant Date -
May 12, 2005
app pub date -
Apr 27, 2004
filing date -
Nov 7, 2003
priority date (Note) -
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status (Latency Note)
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Abstract
A method reduces artifacts in an input image. A variance image is generated from the input image. The input image is partitioned into a plurality of blocks of pixels. A set of classifications is defined. The set of classifications includes smooth, texture, and edge. A particular classification is assigned to each block of pixels of the input image according to the variance image, to generate smooth blocks, texture blocks, and edge blocks. A fuzzy filter is applied to each pixel of only each edge block.
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