Error concealment using multiresolution motion estimation

Augustine Tsai; Stephen M. Wiener; Joseph Wilder

doi:10.1117/12.223993

3 October 1995 Error concealment using multiresolution motion estimation

Augustine Tsai, Stephen M. Wiener, Joseph Wilder

Proceedings Volume 2597, Machine Vision Applications, Architectures, and Systems Integration IV; (1995) https://doi.org/10.1117/12.223993
Event: Photonics East '95, 1995, Philadelphia, PA, United States

Abstract

An error concealment scheme for MPEG video networking is presented. Cell loss occurs in the presence of network congestion and buffer overflow. This phenomenon of cell loss transforms into lost image blocks in the decoding process, which can severely degrade the viewing quality. The new method differs from the conventional concealment by its exploitation of spatial and temporal redundancies in large scale. The motion estimation is carried out by registering images within a multiresolution pyramid. The global motion is estimated in the lowest resolution level, and is then used to update and refine the local motion. The local motion is further refined iteratively at higher resolution levels. An affine transform is used to extract translation, scaling and rotation parameters. In many applications where there is significant camera motion (e.g., remote surveillance), the new method performs better than the conventional concealment.

Citation Download Citation

Augustine Tsai, Stephen M. Wiener, and Joseph Wilder "Error concealment using multiresolution motion estimation", Proc. SPIE 2597, Machine Vision Applications, Architectures, and Systems Integration IV, (3 October 1995); https://doi.org/10.1117/12.223993

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