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28 December 1998 Motion vector recovery for error concealment
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Proceedings Volume 3653, Visual Communications and Image Processing '99; (1998)
Event: Electronic Imaging '99, 1999, San Jose, CA, United States
This paper describes an error concealment algorithm to reduce the effect of channel errors in the bitstreams generated by motion compensated video coding algorithms such as MPEG. When channel errors are introduced during transmission and cannot be corrected properly, we can apply an error concealment technique to repair damaged portions of the picture by exploiting the spatial and temporal redundancies in the received and reconstructed video signal. In motion compensated video coding, if some bits are lost or received with errors, not only the current picture will be corrupted, but also errors will propagate to succeeding frames. In this paper, we analyze the effect of channel errors in MPEG-2 bitstreams, and propose an idea for recovering lost or erroneously received motion vectors. Extended luminance intensity value of the lost block is used for motion estimation at the decoder side. Simulation results show that the proposed algorithm achieves good performance in PSNR and provides good subjective image quality.
© (1998) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Jae-Won Suh, Eung-Tae Kim, Seung-Jong Choi, Hee-Bok Park, and Yo-Sung Ho "Motion vector recovery for error concealment", Proc. SPIE 3653, Visual Communications and Image Processing '99, (28 December 1998);

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