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The Strathprints institutional repository is a digital archive of University of Strathclyde research outputs. Strathprints provides access to thousands of Open Access research papers by University of Strathclyde researchers, including those from the School of Psychological Sciences & Health - but also papers by researchers based within the Faculties of Science, Engineering, Humanities & Social Sciences, and from the Strathclyde Business School.

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Correlation estimation with particle-based belief propagation for distributed video coding

Stankovic, L. and Stankovic, V. and Wang, S. and Cheng, S. (2011) Correlation estimation with particle-based belief propagation for distributed video coding. In: 2011 IEEE international conference on acoustics, speech and signal processing. International Conference on Acoustics Speech and Signal Processing ICASSP . IEEE, New York, pp. 1505-1508. ISBN 9781457705397

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Abstract

In this paper, we propose an adaptive Distributed Video Coding (DVC) scheme that dynamically estimates correlation statistics of the scene in a video sequence to enhance belief-propagation (BP) Slepian-Wolf (SW) decoding. In order to exploit the robustness of distributed source coding (DSC) designs, we integrate particle filtering with standard BP decoding in one factor graph to estimate online correlation among source and side information. Our proposed system boasts improved performance over classical DVC without correlation estimation, due to improved knowledge of correlation statistics via the combination of bit-plane coding and particle-based BP tracking in each frame, as shown by our results.