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Packetization of FGS/PFGS video bitstreams

  • US 7,283,589 B2
  • Filed: 03/10/2003
  • Issued: 10/16/2007
  • Est. Priority Date: 03/10/2003
  • Status: Expired due to Fees
First Claim
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1. A method comprising:

  • generating a plurality of encoded bitstream segments by applying a layered coding scheme to a video stream;

    calculating a contribution to distortion reduction associated with each of the plurality of encoded video bitstream segments according to a formula;


    Δ

    D(f,l,i)=Δ

    D0(f,l,i)+Δ

    Ddr(f,l,i)wherein;

    Δ

    D0(f,l,i) represents a distortion reduction of a bitstream segment associated with an fth frame, an lth bitplane, and an ith macroblock; and

    Δ

    Ddr(f,l,i) represents a drifting suppression of the bitstream segment associated with the fth frame lth bitplane, and ith macroblock;

    selecting multiple bitstream segments from the plurality of encoded bitstream segments based on a comparison of the contribution to distortion reduction associated with individual ones of the encoded bitstream segments; and

    packetizing the multiple bitstream segments into data packets such that a first data packet contains bitstream segments associated with multiple bit-planes of a first macro block, and such that no other one of the data packets contains bitstream segments associated with the first macro block.

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