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Depth prediction method and depth prediction device based on alternative temporal motion vector prediction

A technology of motion vector prediction and depth prediction, which is applied in the field of video coding and decoding, can solve the problems of low coding efficiency and long coding time, and achieve the effects of improving coding efficiency, reducing coding time, and simple device structure

Active Publication Date: 2018-07-31
CENT SOUTH UNIV
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Problems solved by technology

[0006] The present invention provides a depth prediction method and device based on optional time-domain motion vector prediction. Its purpose is to overcome the fact that the original JEM coder will traverse all depth division modes. The problem of too low a defect

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  • Depth prediction method and depth prediction device based on alternative temporal motion vector prediction
  • Depth prediction method and depth prediction device based on alternative temporal motion vector prediction
  • Depth prediction method and depth prediction device based on alternative temporal motion vector prediction

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[0051] The application will be further described below in conjunction with the accompanying drawings and embodiments.

[0052] Such as image 3 As shown, a depth prediction method based on optional temporal motion vector prediction includes the following steps:

[0053] Step 1: Perform ATMVP motion prediction on the current coding unit CU belonging to the B frame, and obtain the MV of each subCU in the inter-frame forward reference frame ref0 and backward reference frame ref1 0 , MV 1 ;

[0054] Step 2: Based on the shape type of the current coding unit CU, obtain the pre-partition type of the current coding unit CU;

[0055] Step 3: According to the pre-division type obtained in step 2, obtain the pre-division blocks of the current coding unit CU, and combine the MVs of all subCUs contained in each pre-division block 0 , MV 1 Merge separately to get MV 0 together, MV 1 Combined, if each pre-divided block MV 0 Hehe MV 1 If both have similarity, the current coding unit...

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Abstract

The invention discloses a depth prediction method and a depth prediction device based on alternative temporal motion vector prediction. The depth prediction method comprises steps that pre-division of a current code (CU) unit is carried out, and an ATMVP mechanism is acquired to acquire the prediction MV of the inter-frame subCU of the CU, and the prediction MV is processed according to the pre-divided shape to acquire the prediction MV of the various subCU corresponding to the pre-division, and the similarities of the prediction MV are determined to decide whether the divided mode of the pre-division is started, and then an unnecessary depth mode can be skipped, and therefore coding time can be reduced, and coding efficiency can be improved. The whole device has a simple structure, andJEM current information is used to predict the depth division in advance, and the unnecessary subsequent division is skipped, and therefore the coding time is reduced; and the abovementioned technicalscheme is simple, and is easy to realize, and industrialized promotion of a new generation of video coding standard is facilitated.

Description

technical field [0001] The present invention relates to the field of video coding and decoding, in particular to a depth prediction method and device based on optional time-domain motion vector prediction. Background technique [0002] In 2013, ITU-T's VCEG (Video Coding Experts Group) and ISO / IEC's MPEG (Motion Picture Experts Group) jointly launched the HEVC (High Efficiency Video Coding) video compression scheme. Since 2016, VCEG and MPEG have started to study a new generation of video encoders, and established an expert group - JVET (Joint Video Research Team), to discuss the development and formulation of a new generation of video coding standards. The new generation of video coding standards still uses a hybrid coding framework, including modules such as transform, quantization, entropy coding, intra-frame prediction, inter-frame prediction, and loop filtering. However, in order to improve the video compression rate, the standard uses QTBT (Quadtree plus binary tree, ...

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Application Information

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IPC IPC(8): H04N19/51H04N19/573H04N19/96
CPCH04N19/51H04N19/573H04N19/96
Inventor 张昊雷诗哲王塞博牟凡符婷
Owner CENT SOUTH UNIV
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