An edge and texture preserving algorithm for error concealment in video sequences

نویسندگان

  • S. Belfiore
  • L. Crisà
  • M. Grangetto
  • E. Magli
  • G. Olmo
چکیده

In this paper we propose a novel error concealment algorithm for block-based video transmission over errorprone networks. In particular, we develop a spatial error concealment technique which combines edge-preserving interpolation and texture analysis and synthesis, providing a reconstruction of lost macroblocks optimized for visual perception. In particular, the algorithm recovers image edges by MAP estimation with a Markov random field prior, and replenishes lost textured areas with a texture synthesized from neighboring macroblocks. Experimental results show that texture synthesis allows to achieve improved visual quality of the reconstructed areas with respect to stand-alone state-of-the-art spatial conceal-

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تاریخ انتشار 2002