Error concealment apparatus for HDTV receivers
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United States of America Patent
Stats
-
Sep 21, 1993
Grant Date -
N/A
app pub date -
Mar 2, 1992
filing date -
Mar 2, 1992
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Image reproduction is improved in an MPEG-like television receiver by inclusion of post-processing adaptive error concealment. Compressed video signal is examined to determine blocks of video signal containing errors, and error tokens are generated for identifying corresponding blocks of decompressed pixel values. Pixel values adjacent the decompressed blocks of pixel values containing errors are examined to generate estimates of the relative image motion and image detail in the area of such blocks. The block of pixel values is replaced with temporally displaced co-located blocks of pixel values or interpolated data depending upon whether the estimate of image motion is lesser or greater than the estimate of image detail.
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Cited Art Landscape
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