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Robust and edge-preserving video error concealment by coarse-to-fine block replenishment

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5 Author(s)
Belfiore, S. ; Dipartimento di Elettronica - Politecnico di Torino, Corso Duca degli Abruzzi 24 - 10129 - Italy ; Crisa, L. ; Grangetto, M. ; Magli, E.
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In this paper we propose a novel error concealment algorithm for video transmission over wireless networks potentially subject to packet erasures. In particular, we develop a technique for the replenishment of missing macroblocks, which aims at minimizing the impact of the lost data on the resulting video with respect to the human visual system. The proposed algorithm operates three reconstruction stages at different scales, by first recovering smooth large-scale patterns, then large-scale structures, and finally local edges in the lost macroblock. Experimental results show that the proposed algorithm achieves improved visual quality of the reconstructed frames with respect to other state-of-the-art techniques, as well as better PSNR results.

Published in:

Acoustics, Speech, and Signal Processing (ICASSP), 2002 IEEE International Conference on  (Volume:4 )

Date of Conference:

13-17 May 2002