A Survey of Error-Concealment Schemes for Real-Time Audio and Video Transmissions over the Internet*
MSE '00 Proceedings of the 2000 International Conference on Microelectronic Systems Education
Vision Model Based Video Perceptual Distortion Measure for Video Processing and Applications
ICASSP '97 Proceedings of the 1997 IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP '97) -Volume 4 - Volume 4
Video perceptual distortion measure: two-dimensional versus three-dimensional approaches
ICIP '97 Proceedings of the 1997 International Conference on Image Processing (ICIP '97) 3-Volume Set-Volume 3 - Volume 3
Decision trees for error concealment in video decoding
IEEE Transactions on Multimedia
Transform coded image reconstruction exploiting interblock correlation
IEEE Transactions on Image Processing
Journal on Image and Video Processing - Special issue on distributed video coding
Journal of Visual Communication and Image Representation
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Transmission of a compressed video signal over a lossy communication network exposes the information to losses and errors, which leads to significant visible errors in the reconstructed frames at the decoder side. In this paper we present a new hybrid error concealment algorithm for compressed video sequences, based on temporal and spatial concealment methods. We describe spatial and temporal techniques for the recovery of lost blocks. In particular, we develop postprocessing techniques for the reconstruction of missing or damaged macroblocks. A new decision support tree is developed to efficiently choose the best appropriate error concealment method, according to the spatial and temporal characteristics of the sequence. The proposed algorithm is compared to three error concealment methods: spatial, temporal, and a previous hybrid approach using different noise levels. The results are evaluated using four quality measures. We show that our error concealment scheme outperforms all the other three methods for all the tested video sequences.