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Temporal and inter-view interpolation for the improvement of the side information in distributed video coding

Abstract : Distributed source coding is a paradigm that consists in encoding two correlated sources independently, provided that they are decoded jointly. Wyner and Ziv proved that distributed source coding can attain the same rate distortion performance of joint coding, under some constraints. This feature makes distributed source coding very attractive for applications that require a low-complexity encoder (such as for wireless sensor networks) or for avoiding communication between the sources (such as in multiview video systems). In distributed video coding, correlated frames are encoded separately but decoded jointly. In the Stanford Architecture, the video is split into Key Frames and Wyner-Ziv Frames. Only the Key Frames are sent to the decoder. The Wyner-Ziv Frames are fed into a systematic channel coder and the parity bits are sent to the decoder. At the decoder side, an estimation of the Wyner-Ziv Frame, called side information, is produced by interpolating the frames available at the decoder side. The side information, that can be considered as a noisy version of the real Wyner-Ziv Frame, is corrected by the parity bits sent by the encoder. In this thesis, we study several algorithms for side information generation in the context of distributed multiview video coding both for the temporal and inter-view interpolation. All our algorithms outperform the state-of-the-art in terms of rate distortion performance. A second contribution is in the context of the multiview video plus depth (MVD) format. In the interactive multiview video streaming paradigm, distributed video coding assures the continuity of the playback during the streaming, since the Wyner-Ziv Frames can be decoded independently from which reference frames are available at the decoder side. Several algorithms for Wyner-Ziv estimation in this context have been proposed.
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https://pastel.archives-ouvertes.fr/tel-01060836
Contributor : Giovanni Petrazzuoli <>
Submitted on : Thursday, September 11, 2014 - 11:47:18 AM
Last modification on : Friday, July 31, 2020 - 10:44:02 AM
Long-term archiving on: : Friday, December 12, 2014 - 10:10:35 AM

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  • HAL Id : tel-01060836, version 1

Citation

Giovanni Petrazzuoli. Temporal and inter-view interpolation for the improvement of the side information in distributed video coding. Signal and Image processing. Telecom ParisTech, 2013. English. ⟨tel-01060836v1⟩

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