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Method and device for variable complexity decoding of motion-compensated block-based compressed digital video

  • US 6,167,092 A
  • Filed: 08/12/1999
  • Issued: 12/26/2000
  • Est. Priority Date: 08/12/1999
  • Status: Expired due to Term
First Claim
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1. A method for computing an inverse discrete cosine transform by using a number of non-zero coefficients and an associated function mapping method based on video compression standard syntax cues, the method comprising the steps of:

  • generating a set of reduced complexity implementation candidates for the inverse discrete cosine transform;

    using video compression standard syntax cues to obtain the number of non-zero coefficients for the inverse discrete cosine transform; and

    mapping the number of non-zero coefficients to a corresponding reduced complexity implementation candidate inverse transformation.

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