Title :
Joint successive correlation estimation and side information refinement in distributed video coding
Author :
Deligiannis, Nikos ; Verbist, Frederik ; Slowack, Jürgen ; Van de Walle, Rik ; Schelkens, Peter ; Munteanu, Adrian
Author_Institution :
Dept. of Electron. & Inf., Vrije Univ. Brussel, Brussels, Belgium
Abstract :
This paper presents a novel hash-based distributed video coding (DVC) scheme that combines an accurate online correlation channel estimation (CCE) algorithm with an efficient side information refinement strategy, delivering state-of-the-art compression performance. The proposed DVC scheme applies layered bit-plane Wyner-Ziv coding and successively refines the CCE bit-plane-per-bit-plane during decoding. In addition, the side information is successively refined upon decoding of distinct refinement levels, grouping specific frequency bands of the discrete cosine transform. The proposed system not only outperforms the benchmark in DVC but several state-of-the-art side information refinement techniques and CCE methods as well.
Keywords :
channel estimation; correlation methods; data compression; decoding; discrete cosine transforms; video coding; CCE bit-plane-per-bit-plane; applies layered bit-plane Wyner-Ziv coding; compression performance; decoding; discrete cosine transform; hash-based distributed video coding scheme; joint successive correlation estimation; online correlation channel estimation algorithm; side information refinement strategy; Correlation; Decoding; Discrete cosine transforms; PSNR; Quantization; Silicon; Video coding; Distributed video coding; correlation channel estimation; successive refinement;
Conference_Titel :
Signal Processing Conference (EUSIPCO), 2012 Proceedings of the 20th European
Conference_Location :
Bucharest
Print_ISBN :
978-1-4673-1068-0