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Proceedings Paper

Multiple description image coding using several multiple description scalar quantizers
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Paper Abstract

In this paper a multiple description coding (MDC) that uses more than one multiple description scalar quantizer (MDSQ) is presented. The MDSQ merging constraints for joint decoding of descriptions obtained using side quantizers from different MDSQs are presented. In this way, the bit streams from the side quantizers resulting in significantly different rate-distortion properties are jointly decoded as opposed to that of two bit streams of similar rate-distortion performances obtained using a single MDSQ. Rate distortion performances of joint decoding of different description combinations obtained from multiple MDSQs outperforms those obtained from a single MDSQ. Robustness of the proposed approach evaluated under packet erasure channel is higher than that of the conventional approach. In addition to high robustness, we also demonstrate how this scheme is extended to successive side quantizer bin merging that is used to achieve robust quality scalability within an MDC framework.

Paper Details

Date Published: 19 January 2009
PDF: 9 pages
Proc. SPIE 7257, Visual Communications and Image Processing 2009, 725711 (19 January 2009); doi: 10.1117/12.807600
Show Author Affiliations
Muhammad Majid, Univ. of Sheffield (United Kingdom)
Charith Abhayaratne, Univ. of Sheffield (United Kingdom)

Published in SPIE Proceedings Vol. 7257:
Visual Communications and Image Processing 2009
Majid Rabbani; Robert L. Stevenson, Editor(s)

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