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
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.
Abstract
Disclose method, coding and the decoding device of coding and decoding image.The present invention relates to a kind of method that at least one image is encoded, including：Divide an image into multiple pieces；Block is grouped into the subset of the block of predetermined quantity；To each parallel encoding in the subset of block, the block in considered subset is to be encoded according to the predefined procedure of traversal.Coding step is included for the current block in considered subset, and the block with regard to encoding before at least one and decode is predicted the substep encoding to current block, and the substep that based at least one symbol appearing probability, current block is carried out with entropy code.In the case of current block is to be coded of first piece in considered subset, symbol appearing probability is that the block for the predictive encoding at least one other subset and decoding to calculate.In the case of current block is block in addition to first piece in considered subset, symbol appearing probability is that the block at least one coding and decoding of belonging to same subsets to calculate.

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8 Claims

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, And Based 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.


2. a kind of method for encoding images, including：

Residual block is entered with line translation to obtain the block converting； The block of conversion is quantified to obtain the block that coefficient is quantized； The block that coefficient is quantized carries out entropy code； Wherein, block coefficient being quantized carries out entropy code and includes： Determine that whether block that coefficient is quantized is first in the order of block in the group of given block； In response to determining that the block that coefficient is quantized is first in the order of the block in the group of given block, take from bufferReturn first group of probability data, wherein first group probability data includes the first group code probability of occurrence being associated with following block, instituteState block closely to position from first piece and belong to different another pieces of the group with given block in predetermined multiple pieces of groupGroup； Entropy code is carried out based on the block that first group of probability data is quantized to coefficient；
AndIn response to determining that the block that is quantized of coefficient is not first in the order of the block in the group of given block, fetch second group generalRate data, wherein second group probability data includes the second group code appearance being associated with least one other decoded blockProbability, described at least one other decoded block belongs to the group of the given block in described predetermined multiple pieces of group, Wherein, the second group code probability of occurrence is not associated with the block of the group being not belonging to given block, And Entropy code is carried out to second piece based on second group of probability data.


3. a kind of equipment of the nontransitory data storage including the vedio data for storage coding, the video of codingView data includes：

Predetermined multiple pieces of group； Wherein, in the order of the block in the group of given block be first piece of first be to be transformed and be based on first group of probabilityThe block that data is coded by entropy, wherein first group probability data includes the first group code probability of occurrence being associated with following block, instituteState different another of the group with given block that block closely positioned from first piece and belong in described predetermined multiple pieces of groupThe group of block； Wherein, in the order of the block in the group of given block be not second piece of first be to be transformed and general based on second groupThe block that rate data is coded by entropy, wherein second group probability data includes being associated with least one other decoded blockTwo group code probabilities of occurrence, described at least one other decoded block belongs to given in described predetermined multiple pieces of groupThe group of block, the wherein second group code probability of occurrence is not associated with the block of the group being not belonging to given block.


4. a kind of image decoding apparatus, including：
 For executing the part of the step of method according to claim 1.

5. a kind of image encoding apparatus, including：
 For executing the part of the step of method according to claim 2.

6. a kind of computerreadable recording medium, is stored thereon with programmed instruction, and this programmed instruction is being when executed by makingThe step obtaining computing device method according to claim 1 and 2.

7. a kind of image decoding apparatus, including：

Memorizer, is configured to store programmed instruction, and It is couple to the processor of memorizer, be configured to execute program instructions, Wherein programmed instruction is being when executed by the step that makes computing device method according to claim 1.


8. a kind of image encoding apparatus, including：

Memorizer, is configured to store programmed instruction, and It is couple to the processor of memorizer, be configured to execute program instructions, Wherein programmed instruction is being when executed by the step that makes computing device method according to claim 2.

Specification(s)