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A Fast Coding Unit Partitioning Method Based on Intra-frame Coding in Multipurpose Coding

An intra-frame coding and coding unit technology, which is applied in the field of video coding, can solve the problems of long VTM coding time, etc., and achieve the effects of small calculation amount, reduced coding time, and simple steps.

Active Publication Date: 2021-11-16
CENT SOUTH UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] Aiming at the problem of long encoding time of the VVC standard encoder VTM in the prior art, the embodiment of the present invention provides a fast coding unit division method based on multi-purpose coding intra-frame coding, which shortens the coding time and improves practical applicability

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  • A Fast Coding Unit Partitioning Method Based on Intra-frame Coding in Multipurpose Coding
  • A Fast Coding Unit Partitioning Method Based on Intra-frame Coding in Multipurpose Coding
  • A Fast Coding Unit Partitioning Method Based on Intra-frame Coding in Multipurpose Coding

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Embodiment 1

[0034] A method for quickly dividing coding units based on intra-frame coding in multi-purpose coding, the steps of which include:

[0035] S1: After the current CU has completed the horizontal binary partition and vertical binary partition modes, determine the optimal partition mode of the upper sub-CU Split in the horizontal binary partition upper And the optimal partition mode of sub-CU Split lower Are they all vertical binary partitions and the optimal intra prediction mode (IntraMode upper , IntraMode lower ) and the optimal intra prediction mode of the current CU (IntraMode curr ) are prediction modes (modes 39 to 57) in the vertical direction, if not, then proceed to step S2;

[0036] S2: Determine whether the rate-distortion cost of the vertical binary partition is smaller than the rate-distortion cost of the horizontal binary partition, and if so, go to step S3;

[0037] S3: Skip the horizontal three-point division mode, directly perform the vertical three-point d...

Embodiment 2

[0042] A method for quickly dividing coding units based on intra-frame coding in multi-purpose coding, the steps of which include:

[0043] S1: After the current CU has completed the horizontal binary partition and vertical binary partition modes, determine the optimal partition mode of the upper sub-CU Split in the horizontal binary partition upper And the optimal partition mode of sub-CU Split lower Are they all vertical binary partitions and the optimal intra prediction mode (IntraMode upper ,IntraMode lower ) and the optimal intra prediction mode of the current CU (IntraMode curr ) are prediction modes (modes 39 to 57) in the vertical direction, if yes then go to step S3, otherwise go to step S2;

[0044] S2: Determine whether the rate-distortion cost of the vertical binary partition is smaller than the rate-distortion cost of the horizontal binary partition, if yes, go to step S3, otherwise go to step S4;

[0045] S3: Skip the horizontal three-point division mode, dir...

Embodiment 3

[0049] A method for quickly dividing coding units based on intra-frame coding in multi-purpose coding, the steps of which include:

[0050] S1: After the current CU has completed the horizontal binary partition and vertical binary partition modes, determine the optimal partition mode of the upper sub-CU Split in the horizontal binary partition upper And the optimal partition mode of sub-CU Split lower Are they all vertical binary partitions and the optimal intra prediction mode (IntraMode upper ,IntraMode lower ) and the optimal intra prediction mode of the current CU (IntraMode curr ) are prediction modes (modes 39 to 57) in the vertical direction, if yes then go to step 2, otherwise go to S3;

[0051] S2: Skip the horizontal trident division mode, directly perform the vertical trifurcation division mode, and select the best mode for the current CU with the least rate-distortion cost from the intra prediction, vertical trifurcation division, horizontal binary division and ...

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Abstract

An embodiment of the present invention provides a fast coding unit division method based on intra-frame coding in multi-purpose coding. The core idea of ​​the fast division method is to combine the coding information of horizontal binary division and vertical binary division to skip unnecessary Trifurcation to reduce encoding time as much as possible. The method provided by the embodiment of the present invention has simple steps and a small calculation amount, and can be conveniently put into practical application.

Description

technical field [0001] The invention belongs to the technical field of video coding, and in particular relates to a method for quickly dividing coding units based on intra-frame coding in multipurpose coding. Background technique [0002] Although High Efficiency Video Coding (HEVC) is currently the main and latest video coding technology in the world, it still cannot meet the growing video applications and video demands. Therefore, the Moving Picture Experts Group (MPEG for short) and the Video Coding Experts Group (VCEG for short) established the Joint Video Exploration Team (JVET for short) in October 2015 to study new generation Video coding technology, in order to surpass the compression efficiency of HEVC and adapt to the rapid development of today's video services. [0003] At the 10th JVET meeting in April 2018, JVET defined the first draft of a new generation of video coding technology, named the new video standard Versatile Video Coding (VVC for short), and releas...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N19/103H04N19/147H04N19/186H04N19/96
CPCH04N19/103H04N19/147H04N19/186H04N19/96
Inventor 张昊符婷
Owner CENT SOUTH UNIV
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