Adaptive mode decision with residual motion compensation for distributed video coding

Huynh Van Luong, Søren Forchhammer, Jurgen Slowack, Jan De Cock, Rik Van de Walle

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    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 proposes a novel adaptive technique for mode decision to control and take advantage of skip mode and intra mode in DVC. The adaptive mode decision 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 show that the proposed adaptive mode decision DVC significantly improves the rate distortion performance without increasing the encoding complexity. For a GOP size of 2 on the set of test sequences, the average bitrate saving of the proposed codec is 35.5% on WZ frames compared with the DISCOVER codec.
    Original languageEnglish
    JournalA P S I P A Transactions on Signal and Information Processing
    Volume4
    Pages (from-to)153-156
    ISSN2048-7703
    DOIs
    Publication statusPublished - 2015
    EventPicture Coding Symposium (PCS 2013) - San Jose, CA, United States
    Duration: 8 Dec 201311 Dec 2013
    http://www.pcs2013.org/

    Conference

    ConferencePicture Coding Symposium (PCS 2013)
    Country/TerritoryUnited States
    CitySan Jose, CA
    Period08/12/201311/12/2013
    Internet address

    Bibliographical note

    Copyright © The Authors, 2015 This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (http://creativecommons.org/licenses/by/3.0/), which permits unrestricted re-use, distribution, and reproduction in any medium, provided the original work is properly cited.

    Keywords

    • Distributed video coding
    • Adaptive mode decision
    • Noise distribution
    • Residual motion compensation

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