The method of coding and decoding image, coding and decoding device

The method of coding and decoding image, coding and decoding device

  • CN 106,488,232 A
  • Filed: 02/23/2012
  • Published: 03/08/2017
  • Est. Priority Date: 03/07/2011
  • Status: Active Grant
First Claim
Patent Images

1. a kind of picture decoding method, including:

  • Receive the stream representing at least one coded image;

    The group of predetermined multiple pieces of identification from stream;

    The group of one block is supplied to the first decoding unit;

    AndProcess first piece in the group of given block by the first decoding unit, the wherein process to first piece includes:

    Determine that first piece is in the order of the block in the group of given block first;

    In response to determining that first piece is in the order of the block in the group of given block first, fetches first group from bufferProbability data, wherein first group probability data includes the first group code probability of occurrence being associated with following block, described piece and theOne piece closely positions and belongs in described predetermined multiple pieces of group and given block the group organizing different another pieces;

    Based on first group of probability data, first piece is carried out with entropy decoding to obtain the residual block quantifying;

    Inverse quantization is carried out to obtain the block of inverse quantization to the residual block quantifying;

    Inverse transformation is carried out to the block of inverse quantization;

    AndProcess second piece in the group of described given block by the first decoding unit, the wherein process to second piece includes:

    Determine that second piece is not in the order of the block in the group of given block first;

    In response to determining that second piece is not in the order of the block in the group of given block first,Fetch second group of probability data from memory cell, wherein second group probability data include with least one otherThe second group code probability of occurrence that the block of decoding is associated, described at least one other decoded block belongs to described predetermined manyThe group of the given block in the group of individual block,Wherein, the second group code probability of occurrence is not associated with the block of the group being not belonging to given block,AndBased on second group of probability data, second piece is carried out with entropy decoding to obtain the residual block quantifying;

    Inverse quantization is carried out to obtain the block of inverse quantization to the residual block quantifying;

    AndInverse transformation is carried out to the block of inverse quantization.

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