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Method and apparatus for processing an image in an image compression/decompression system that uses hierachical coding

  • US 6,633,677 B1
  • Filed: 12/30/1999
  • Issued: 10/14/2003
  • Est. Priority Date: 12/30/1999
  • Status: Expired due to Term
First Claim
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1. A method for use in processing data representative of an image, the method comprising the steps of:

  • receiving data indicative of one or more reconstructed versions of the image including data representative of a causal context of an object pixel of the image;

    generating a plurality of predictions for the object pixel and a plurality of predictions for at least one pixel of the causal context;

    determining at least one measure of correlation between the plurality of predictions for the at least one pixel of the causal context and the data representative of the causal context; and

    determining a prediction for the object pixel computed as a weighted sum of one or more of the plurality of predictions for the object pixel, in accordance with the at least one measure of correlation and a weighting policy.

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