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Motion vector space prediction method for video coding

A technology of motion vector prediction and motion vector, which is applied in digital video signal modification, television, electrical components, etc., and can solve problems such as difficult application

Inactive Publication Date: 2009-03-25
INST OF COMPUTING TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Especially in terms of data compression technology, due to the limitations of current storage space and network bandwidth bottlenecks, some applications are difficult to implement in the face of a large amount of data to be processed.

Method used

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  • Motion vector space prediction method for video coding
  • Motion vector space prediction method for video coding
  • Motion vector space prediction method for video coding

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] The motion vector prediction value of the to-be-coded block E is calculated by using the correlation of the motion vectors of the adjacent coding blocks A, B, C and D around the current to-be-predicted coding block E (where the A block is the left side of the current block E that has been Coding block, block B is the coded block above the current block E, block C is the coded block above the current block E, and block D is the coded block above the current block E). The motion vectors of three blocks are selected from the four adjacent blocks to calculate the motion vector prediction of the block E to be coded. The selection criteria of the three candidate blocks are: if blocks A, B, and C have been coded, the motion vectors of these three blocks are used; if blocks A or B are not available, their motion vectors are set to zero; If the block is not available, the motion vector of the D block is used. like figure 2 As shown, the figure is divided into four parts (a), ...

Embodiment 2

[0066] The motion vector prediction value of the to-be-coded block E is calculated by using the correlation of the motion vectors of the adjacent coding blocks A, B, C and D around the current to-be-predicted coding block E (where the A block is the left side of the current block E that has been Coding block, block B is the coded block above the current block E, block C is the coded block above the current block E, and block D is the coded block above the current block E). The motion vectors of three blocks are selected from the four adjacent blocks to calculate the motion vector prediction of the block E to be coded. The selection criteria of the three candidate blocks are: if blocks A, B, and C have been coded, the motion vectors of these three blocks are used; if blocks A or B are not available, their motion vectors are set to zero; If the block is not available, the motion vector of the D block is used.

[0067] Use B respectively for the three candidate blocks selected ...

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Abstract

The related motion vector prediction technique for audio and video coding / decoding comprises: selecting surrounded coding block A, B, C and D for the target block E; using the motion vectors of three candidate blocks from four as the candidate of prediction vector, calculating the prediction value for coding block E by one of disclosed method (most similarity criterion or most not-similarity criterion). This invention improves compression efficiency, and applies two criterions fit to different sequences.

Description

technical field [0001] The present invention belongs to the technical field of image / video compression, and in particular, the present invention relates to a motion vector prediction technology in audio and video coding and decoding. Background technique [0002] With the progress of human beings in digital signal technology, there are many new products related to it, such as digital TV, new generation mobile communication, network streaming media and so on. They meet people's various needs in work, study, life and entertainment. But at the same time, the emergence of these products also puts forward higher requirements for the existing technology. Especially in data compression technology, some applications are difficult to implement in the face of a large amount of data that needs to be processed due to the limitations of current bottlenecks such as storage space and network bandwidth. Therefore, developing an efficient video codec technology is the key to realizing high...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N7/34H04N7/26H04N19/11H04N19/593
Inventor 高文齐洪钢季向阳赵德斌马思伟
Owner INST OF COMPUTING TECH CHINESE ACAD OF SCI
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