Encoding and decoding video signals using adaptive filter switching criteria
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United States of America Patent
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Jan 30, 1996
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N/A
app pub date -
Jun 29, 1994
filing date -
Nov 24, 1993
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Abstract
Reference frames are generated by selectively filtering blocks of decoded video frames. The decision whether to filter a block is based on a comparison of an energy measure value generated for the block and an energy measure threshold value corresponding to the quantization level used to encode the block. The energy measure threshold value for a given quantization level is selected by analyzing the results of encoding and decoding training video frames using that quantization level. The reference frames are used in encoding and decoding video frames using interframe processing.
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