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Proceedings Paper

Temporal Propagation Of Channel Errors In Multimode Adaptive Coders
Author(s): C. Labit; J. P. de la Tribonniere
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Paper Abstract

The aim of this study is temporal propagation of channel errors in coding schemes for Television Sequences. Many studies have been performed to decrease spatial propagation in adaptive intraframe DPCM coder. All these methods could be extended to temporal domain. Briefly we distinguish, algorithmic robustness using efficient adaptive predictors, systematic protection with redundant information transmission, and the use of error correcting codes. This paper concerns more specifically the inherent robustness of coding algorithms. A multimode intraframe/interframe coding algorithm using motion compensation is used and the locii where channel errors are introduced for simulation experiments are precisely defined : fixed areas, motion compensated areas, uncompensated areas. First experiments show that high degree of adaptivity in the sense of fast switching between prediction modes (intra/interframe) must decrease the error propagation in both temporal and spatial domains. Moreover, correcting improvements such as temporal refleshment of specific parameters, especially motion parameters, have been tested.

Paper Details

Date Published: 1 May 1986
PDF: 8 pages
Proc. SPIE 0594, Image Coding, (1 May 1986); doi: 10.1117/12.952219
Show Author Affiliations
C. Labit, IRISA/Centre INRIA de Rennes (France)
J. P. de la Tribonniere, CCETT (France)

Published in SPIE Proceedings Vol. 0594:
Image Coding
Thomas S. Huang; Murat Kunt, Editor(s)

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