Method for rectifying channel errors in a transmitted image signal encoded by classified vector quantization
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United States of America Patent
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Jan 2, 1996
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N/A
app pub date -
Aug 31, 1994
filing date -
Aug 31, 1993
priority date (Note) -
Expired
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Abstract
A novel method for concealing or rectifying channel errors present in a decoded image signal which has been transmitted in a compressed form by using a classified vector quantization technique comprises a step for estimating the class for a current block by detecting boundary edges at each of four groups of neighboring pixels; and a step for estimating the representative vector for the current block by calculating a multiple number of side-matching functions and choosing the candidate vector producing the smallest side-matching function as the representative vector for the current block.
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