Moving picture coding method and moving picture decoding method

  • US 7,817,868 B2
  • Filed: 10/29/2007
  • Issued: 10/19/2010
  • Est. Priority Date: 08/08/2002
  • Status: Active Grant
First Claim
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1. A picture decoding method comprising:

  • decoding a coded image signal to obtain;

    a reference index that identifies a reference picture for a current block to be decoded;

    commands that indicate correspondence between reference indices and reference pictures;

    information that indicates a maximum reference index value;

    sets of weighting coefficients used for generating a predictive image; and

    a prediction error;

    designating, based on the commands and the reference index, a reference picture which is referred to when the current block is decoded through motion compensation;

    specifying a set of weighting coefficients that corresponds to the reference index from among the sets of weighting coefficients;

    generating the predictive image by performing linear prediction, using the specified set of weighting coefficients, on pixel values of a reference block obtained from the reference picture designated in said designating; and

    generating a reconstructed image from the predictive image and the prediction error.

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