Learning filters for enhancing the quality of block coded still and video images
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United States of America Patent
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Jun 19, 2012
Grant Date -
Feb 5, 2009
app pub date -
Aug 1, 2008
filing date -
Aug 1, 2007
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention relates to a method and an apparatus for reducing blocking artifacts in block-wise coding of still and video images. A learning filter generator is provided at the image encoder for generating a set of filters and associated filtering rules for filtering cross-boundary image patterns based on representative original and decoded training images using a supervised machine learning algorithm. An adaptive filter at the image decoder receives the generated filters and associated filtering rules and performs locally adaptive filtering in accordance with the received filtering rules.
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