Expected Distortion of Dct-Coefficients in Video Streaming over Unreliable Channel

  • Marco Fumagalli
  • Marco Tagliasacchi
  • Stefano Tubaro
Part of the Lecture Notes in Computer Science book series (LNCS, volume 3893)


The Recursive Optimal per-Pixel Estimate (ROPE) algorithm allows the encoder to estimate the pixel-by-pixel expected distortion of the decoded video sequence due to channel loss. The algorithm requires in input an estimate of the packet loss rate and the knowledge of the error concealment technique used at the decoder with no need to perform any comparison between original and decoded frames. Although the ROPE algorithm computes the expected distortion in the pixel domain, in some applications it is important to have access to the expected distortion in the DCT domain, e.g., for an accurate allocation of the redundancy bits in error-resiliency schemes. This paper presents the extension of the ROPE algorithm in the transform DCT domain that allows estimating the expected distortion of the decoded video sequence for each DCT coefficient.


Motion Vector Video Streaming Packet Loss Rate Adjacent Pixel Scalable Video Code 
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Copyright information

© Springer-Verlag Berlin Heidelberg 2006

Authors and Affiliations

  • Marco Fumagalli
    • 1
  • Marco Tagliasacchi
    • 2
  • Stefano Tubaro
    • 2
  1. 1.CEFRIEL – Politecnico di MilanoMilanoItaly
  2. 2.Dip. di Elet.e Inf.Politecnico di MilanoMilanoItaly

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