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Feedback-constrained Wyner-Ziv video coding Host Publication: Picture Coding Symposium, PCS 2012 Authors: J. Slowack, N. Deligiannis, P. Lambert, A. Munteanu and R. Van De Walle Publisher: IEEE Publication Date: May. 2012 Number of Pages: 4 ISBN: 978-1-4577-2047-5
Abstract: Distributed video coding (DVC) systems described in the literature often make use of a feedback channel to
determine the rate. However, supporting such a feedback channel in practice may be difficult, particularly considering that current approaches are unable to incorporate constraints on feedback channel usage. Therefore, in this paper we propose a system in which the number of requests per Wyner-Ziv frame can be constrained to a fixed value. Our technique involves decoder-side rate estimation, modeling of its accuracy, and finally defining the number of Wyner-Ziv bits for each of the requests allowed. The
experimental results indicate that the performance loss is limited when compared to a configuration operating without constraints on the feedback channel. External Link.
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