Multiple description image coding with redundant expansions and optimal quantization

This paper addresses the problem of optimal rate allocation for multiple description coding with redundant signal expansions. In case of redundant descriptions, the quantization of the transform coefficients has clearly to be adapted to the importance of the basis functions, to the redundancy in the representation, and to the expected loss probability on the transmission channel. We derive a rate-distortion optimal solution for the scalar quantization of coefficients in redundant signal representations. The application of the optimal rate allocation to a typical image communication problem demonstrates performance gains with respect to scheme based on uniform quantization with fixed step size, and to solutions based on unequal error protection.


Published in:
2007 Ieee Ninth Workshop On Multimedia Signal Processing, 167-170
Presented at:
9th IEEE Workshop on Multimedia Signal Processing, Chania, GREECE, Oct 01-03, 2007
Year:
2007
Publisher:
Ieee Service Center, 445 Hoes Lane, Po Box 1331, Piscataway, Nj 08855-1331 Usa
ISBN:
978-1-4244-1273-0
Laboratories:




 Record created 2012-07-04, last modified 2018-03-17


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