EFFICIENT ERROR RECOVERY WITH INTRA-REFRESH
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United States of America Patent
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Issued Date -
Apr 23, 2009
app pub date -
Oct 22, 2007
filing date -
Oct 22, 2007
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
Systems and methodologies for concealing errors related to INTRA-frame losses in a transmitted video signal are provided herein. Systems and methodologies provided herein can refine a lost INTRA-coded frame and its subsequent INTER-coded frames using INTRA-coded macroblocks that are provided in a video bitstream in accordance with a Random INTRA Refresh (RIR) scheme. When an INTRA-frame is lost, INTRA-coded macroblocks can be used to refine neighboring INTER-coded macroblocks based on region filling, spatial interpolation, or other algorithms that are based on the strong correlation between values of adjacent pixels in a video signal. Further, motion compensation can be used to refine an INTER-coded pixel having an INTRA-coded pixel in its motion trajectory.
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