Filter for combined de-ringing and edge sharpening
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United States of America Patent
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Feb 21, 2006
Grant Date -
May 1, 2003
app pub date -
Jun 12, 2001
filing date -
Jun 12, 2001
priority date (Note) -
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Abstract
A filter for post-processing digital images and videos, having an edge mapper, a pixel sorter, and an adaptive filter that simultaneously performs de-ringing and edge sharpening. The combined filter is computationally simpler than known methods and can achieve removal of ringing artifacts and sharpening of true edges at the same time. The present invention also includes a preferred method of simultaneously de-ringing and edge sharpening digital images and videos.
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