Multiple description subband coding
- 27 November 2002
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
- p. 684-688
- https://doi.org/10.1109/icip.1998.723590
Abstract
Multiple Description Coding (MDC) is a technique used to ob- tain two or more (often correlated) descriptions of a source , which are transmitted over different channels to the receiver. Th ese de- scriptions of the source support two levels of reconstructi on qual- ity. When all the descriptions are received and used in the re con- struction, the source can be reconstructed with high fidelity. When only a subset of the descriptions is received, the quality of recon- struction should still be acceptable. In this work, we intro duce MDC (with two descriptions) in the context of classification based sub- band coding. We develop an efficient MDC scheme using multipl e description scalar quantizers and present a greedy algorit hm to al- locate rates and redundancies among the classified subbands.Keywords
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