Publication Details
Jurgen Slowack, Nikos Deligiannis, Peter Lambert, Adrian Munteanu, Rik Van De Walle

Proc. Picture Coding Symposium, PCS 2012, Krakow, Poland

Contribution To Book Anthology


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.