APSIPA Transactions on Signal and Information Processing > Vol 4 > Issue 1

Adaptive mode decision with residual motion compensation for distributed video coding

Huynh Van Luong, Technical University of Denmark, Denmark, Søren Forchhammer, Technical University of Denmark, Denmark, sofo@fotonik.dtu.dk , Jürgen Slowack, Barco NV., Jan De Cock, Ghent University – iMinds, Belgium, Rik Van de Walle, Ghent University – iMinds, Belgium
 
Suggested Citation
Huynh Van Luong, Søren Forchhammer, Jürgen Slowack, Jan De Cock and Rik Van de Walle (2015), "Adaptive mode decision with residual motion compensation for distributed video coding", APSIPA Transactions on Signal and Information Processing: Vol. 4: No. 1, e1. http://dx.doi.org/10.1017/ATSIP.2014.21

Publication Date: 12 Jan 2015
© 2015 Huynh Van Luong, Søren Forchhammer, Jürgen Slowack, Jan De Cock and Rik Van de Walle
 
Subjects
 
Keywords
Distributed video codingadaptive mode decisionnoise distributionresidual motion compensation
 

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In this article:
I. INTRODUCTION 
II. THE PROPOSED DVC ARCHITECTURE 
III. AMD WITH RESIDUAL MOTION COMPENSATION FOR DISTRIBUTED VIDEO CODING 
IV. PERFORMANCE EVALUATION 
V. CONCLUSION 

Abstract

Distributed video coding (DVC) is a coding paradigm that entails low complexity encoding by exploiting the source statistics at the decoder. To improve the DVC coding efficiency, this paper presents a novel adaptive technique for mode decision to control and take advantage of skip mode and intra mode in DVC initially proposed by Luong et al. in 2013. The adaptive mode decision (AMD) is not only based on quality of key frames but also the rate of Wyner–Ziv (WZ) frames. To improve noise distribution estimation for a more accurate mode decision, a residual motion compensation is proposed to estimate a current noise residue based on a previously decoded frame. The experimental results, integrating AMD in two efficient DVC codecs, show that the proposed AMD DVC significantly improves the rate distortion performance without increasing the encoding complexity. For a GOP size of 2 on the set of six test sequences, the average (Bjøntegaard) bitrate saving of the proposed codec is 35.5% on WZ frames compared with the DISCOVER codec. This saving is mainly achieved by AMD.

DOI:10.1017/ATSIP.2014.21