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International Journal of Digital Multimedia Broadcasting
Volume 2010 (2010), Article ID 425641, 16 pages
http://dx.doi.org/10.1155/2010/425641
Research Article

A Scalable Multiple Description Scheme for 3D Video Coding Based on the Interlayer Prediction Structure

Department of Electronics, University of Pavia, Via Ferrata 1, 27100 Pavia, Italy

Received 2 May 2009; Revised 8 September 2009; Accepted 11 December 2009

Academic Editor: Pietro Zanuttigh

Copyright © 2010 Lorenzo Favalli and Marco Folli. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The most recent literature indicates multiple description coding (MDC) as a promising coding approach to handle the problem of video transmission over unreliable networks with different quality and bandwidth constraints. Furthermore, following recent commercial availability of autostereoscopic 3D displays that allow 3D visual data to be viewed without the use of special headgear or glasses, it is anticipated that the applications of 3D video will increase rapidly in the near future. Moving from the concept of spatial MDC, in this paper we introduce some efficient algorithms to obtain 3D substreams that also exploit some form of scalability. These algorithms are then applied to both coded stereo sequences and to depth image-based rendering (DIBR). In these algorithms, we first generate four 3D subsequences by subsampling, and then two of these subsequences are jointly used to form each of the two descriptions. For each description, one of the original subsequences is predicted from the other one via some scalable algorithms, focusing on the inter layer prediction scheme. The proposed algorithms can be implemented as pre- and postprocessing of the standard H.264/SVC coder that remains fully compatible with any standard coder. The experimental results presented show that these algorithms provide excellent results.