Methods and apparatus for context selection of block transform coefficients

  • US 6,680,974 B1
  • Filed: 12/02/1999
  • Issued: 01/20/2004
  • Est. Priority Date: 12/02/1999
  • Status: Expired due to Term
First Claim
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1. A method for use in a block transform-based coding system of processing one or more block transform coefficients associated with at least one block of visual data, the method comprising the steps of:

  • identifying one or more previously reconstructed block transform coefficients associated with the visual data; and

    computing a context selection value for use in processing a block transform coefficient associated with the at least one block, the context selection value being based on the one or more previously reconstructed block transform coefficients.

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