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METHOD AND APPARATUS FOR HIGHLY SCALABLE INTRAFRAME VIDEO CODING

  • US 20090175333A1
  • Filed: 01/09/2008
  • Published: 07/09/2009
  • Est. Priority Date: 01/09/2008
  • Status: Active Grant
First Claim
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1. A quality scalable video encoding method for compressing a source video frame, comprising:

  • generating a base quality layer bitstream by encoding the source video frame at a specified lowest quality level or encoding bitrate;

    generating a set of enhancement layer bitstreams by encoding the source video frame at a set of the increasing quality levels or encoding bitrates, the encoding including;

    decomposing the source video frame by subband analysis filter banks into a subband representation of the source video frame;

    forming an inter-layer prediction signal which is a representation of a recovered video frame of the next lower quality layer; and

    generating the enhancement layer bitstream by encoding the subband representation by an inter-layer frame texture encoder that further utilizes the inter-layer prediction signal to remove inter-layer redundancy; and

    composing a scalable bitstream from the base quality layer bitstream and the set of enhancement layer bitstreams using a bitstream multiplexer.

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