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Proceedings Paper

Analysis of error concealment schemes for MPEG-2 video transmission over ATM-based networks
Author(s): Wenjun Luo; Magda El Zarki
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Paper Abstract

When cell loss occurs, error concealment can play a critical role in recovering the viewing quality of impaired video. In this paper, we first present a Slice Interleaving (SI) algorithm which has been demonstrated to be able to effectively prevent vertical adjacent slice loss, thereby enhancing the performance of error concealment techniques that rely heavily on interpolation. Experimentation on approximately 100 video clips using a time-variant Markov Chain (MC) cell loss model that emulates a fluctuating bursty cell loss environment, allowed us to conduct a comprehensive and comparative study of error concealment mechanisms in different coding domains. We then designed a hybrid concealment algorithm, such that, for an arbitrary video sequence, several concealment mechanisms can be adaptively merged together to achieve the best performance. Simulation results show that our hybrid algorithm can effectively detect frames or macroblocks with scene change and/or excessive irregular motion, and adaptively switch to an appropriate concealment module to achieve the optimal video quality.

Paper Details

Date Published: 21 April 1995
PDF: 11 pages
Proc. SPIE 2501, Visual Communications and Image Processing '95, (21 April 1995); doi: 10.1117/12.206670
Show Author Affiliations
Wenjun Luo, Univ. of Pennsylvania (United States)
Magda El Zarki, Univ. of Pennsylvania (United States)


Published in SPIE Proceedings Vol. 2501:
Visual Communications and Image Processing '95
Lance T. Wu, Editor(s)

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