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International Journal of Digital Multimedia Broadcasting
Volume 2009, Article ID 234360, 9 pages
http://dx.doi.org/10.1155/2009/234360
Research Article

Multiple Description Coding Using Data Hiding and Regions of Interest for Broadcasting Applications

1Department of Information Engineering and Computer Science(DISI), University of Trento, Via Sommarive 14, 38100 Trento, Italy
2Multimedia and Vision Research Group, School of Electronic Engineering and Computer Science, Queen Mary, University of London, London E1 4NS, UK

Received 27 February 2009; Accepted 1 June 2009

Academic Editor: Maurizio Murroni

Copyright © 2009 M. Verza et al. 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

We propose an innovative scheme for multiple description coding (MDC) with regions of interest (ROI) support to be adopted in high-quality television. The scheme proposes to split the stream into two separate descriptors and to preserve the quality of the region of interest, even in case one descriptor is completely lost. The residual part of the frame (the background) is instead modeled through a checkerboard pattern, alternating the strength of the quantization. The decoder is provided with the necessary side-information to reconstruct the frame properly, namely, the ROI parameters and location, via a suitable data hiding procedure. Using data hiding, reconstruction parameters are embedded in the transform coefficients, thus allowing an improvement in PSNR of the single descriptions at the cost of a negligible overhead. To demonstrate its effectiveness, the algorithm has been implemented in two different scenarios, using the reference H.264/AVC codec and an MJPEG framework to evaluate the performance in absence of motion-compensated frames on 720p video sequences.