Error resilience in current distributed video coding architectures

  • Authors:

  • Claudia Tonoli;Pierangelo Migliorati;Riccardo Leonardi

  • Affiliations:

  • Signals and Communications Laboratory, Department of Electronics for Automation, University of Brescia, Brescia, Italy;Signals and Communications Laboratory, Department of Electronics for Automation, University of Brescia, Brescia, Italy;Signals and Communications Laboratory, Department of Electronics for Automation, University of Brescia, Brescia, Italy

  • Venue:
  • Journal on Image and Video Processing - Special issue on distributed video coding
  • Year:
  • 2009

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Abstract

In distributed video coding the signal prediction is shifted at the decoder side, giving therefore most of the computational complexity burden at the receiver. Moreover, since no prediction loop exists before transmission, an intrinsic robustness to transmission errors has been claimed. This work evaluates and compares the error resilience performance of two distributed video coding architectures. In particular, we have considered a video codec based on the Stanford architecture (DISCOVER codec) and a video codec based on the PRISM architecture. Specifically, an accurate temporal and rate/distortion based evaluation of the effects of the transmission errors for both the considered DVC architectures has been performed and discussed. These approaches have been also compared with H.264/AVC, in both cases of no error protection, and simple FEC error protection. Our evaluations have highlighted in all cases a strong dependence of the behavior of the various codecs to the content of the considered video sequence. In particular, PRISM seems to be particularly well suited for low-motion sequences, whereas DISCOVER provides better performance in the other cases.