Distributed video coding (DVC) technology is investigated and payed more and more attentions in wireless video applications because of characteristics of its encoder with low-complexity and decoder with high-complexity. Its coding types can be sorted the key and Wyner-Ziv frames, key frames are with conventional intra-coding mode, Wyner-Ziv frames are coded by an encoder that is composed of quantizer following with Slepian-wolf coder, but the Slepian-wolf source coding is realized by use of channel encoding techniques again. During the experiment, we adopt excellent H.264 intra-coding algorithm in key frames and mode decision optimization of intra encoding which is realized by making use of the Sobel algorithm. Slepian-wolf coder which is based on turbo code channel encoding and followed with 2M levels quantizer are used to encode Wyner-Ziv frames. The experiment results demonstrate that 2-7 dB of PSNR is gained and the DVC algorithm is effective to wireless video application.


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    Titel :

    Distributed Video Coding Technology Based on H.264 and Turbo Code


    Beteiligte:
    Lu, Jinzheng (Autor:in) / Zhang, Xiaowei (Autor:in) / Wu, Lenan (Autor:in)


    Erscheinungsdatum :

    2008-05-01


    Format / Umfang :

    480257 byte




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




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