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Proceedings Paper

Motion vector recovery for error concealment
Author(s): Jae-Won Suh; Eung-Tae Kim; Seung-Jong Choi; Hee-Bok Park; Yo-Sung Ho
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Paper Abstract

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.

Paper Details

Date Published: 28 December 1998
PDF: 10 pages
Proc. SPIE 3653, Visual Communications and Image Processing '99, (28 December 1998); doi: 10.1117/12.334717
Show Author Affiliations
Jae-Won Suh, Kwangju Institute of Science and Technology (South Korea)
Eung-Tae Kim, LG Electronics Inc. (South Korea)
Seung-Jong Choi, LG Electronics Inc. (South Korea)
Hee-Bok Park, LG Electronics Inc. (South Korea)
Yo-Sung Ho, Kwangju Institute of Science and Technology (South Korea)


Published in SPIE Proceedings Vol. 3653:
Visual Communications and Image Processing '99
Kiyoharu Aizawa; Robert L. Stevenson; Ya-Qin Zhang, Editor(s)

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