HEVC (High Efficiency Video Coding) prediction mode fast selection method based on time domain correlation

A prediction mode and the best prediction mode technology, applied in the field of video processing, can solve the problems that the speed of HEVC prediction mode selection has not been further improved, and there is no time-domain correlation analysis, so as to achieve the selection of less computational complexity and reduce encoding time , Mode selection results in precise results

Active Publication Date: 2015-02-04
XIDIAN UNIV
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However, at present, these methods do not conduct a detailed analysis of temporal corre

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  • HEVC (High Efficiency Video Coding) prediction mode fast selection method based on time domain correlation
  • HEVC (High Efficiency Video Coding) prediction mode fast selection method based on time domain correlation
  • HEVC (High Efficiency Video Coding) prediction mode fast selection method based on time domain correlation

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[0037] The present invention will be further described in detail with reference to the accompanying drawings and embodiments. This embodiment is carried out on the premise of the technical solution of the present invention, and detailed implementation and specific operation process are given, but the protection scope of the present invention is not limited to the following embodiments.

[0038] refer to figure 1 , the implementation steps of the present invention are as follows:

[0039] Step 1: Classify the motion intensity of the video sequence.

[0040] 1a) For the current coding unit CU 0 build motion vector collection {mv 1 ,mv 2 ,mv 3 ,mv 4 ,mv 5},

[0041] where mv i is the current coding unit CU 0 Surrounding Coding Unit CU i The motion vector, mv i =(x i ,y i ), i=1,...,5,x i and y i Respectively, the abscissa and ordinate of the motion vector; CU 0 The surrounding coding unit set includes its left adjacent coding unit CU 1 , upper adjacent coding un...

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Abstract

The invention discloses an HEVC (High Efficiency Video Coding) prediction mode fast selection method based on time domain correlation and mainly solves the problem of high computation complexity of prediction mode selection during HEVC inter-frame coding. The HEVC prediction mode fast selection method includes the following steps: (1) classifying the movement intensity of a video sequence into three states: slow movement, moderate movement and fast movement; (2) counting the probability relations of the optimum prediction modes of a coding unit and the optimum prediction modes of a coding unit adjacent to the time domain of the coding unit at the movement intensity of slow movement and moderate movement respectively; (3) building a candidate prediction mode list according to the probability relations; (4) coding inter-frame coding units according to the candidate prediction mode list to obtain the optimum prediction mode. The HEVC prediction mode fast selection method effectively reduces the computation complexity of prediction mode selection on the premise of hardly changing the video frequency distortion performance, improves the prediction mode selection speed, reduces coding time, and can be applied to real-time video compression.

Description

technical field [0001] The invention belongs to the field of video processing, in particular to the generation of candidate prediction modes of inter-frame coding units in high-performance video coding HEVC, which can be used in the HEVC inter-frame coding process. Background technique [0002] At present, basically all high-quality multimedia video applications, such as digital video, video on demand and DVD, are still using the advanced video coding standard H.264 / AVC formulated in 2003. However, with the rapid development of video applications, various smart terminals, such as smartphones and tablet computers, have become tools for mass entertainment, and the demand for ultra-high-definition video is also growing. People's demand for high-quality, high-resolution video Higher and higher. In order to meet the ever-increasing demands of video applications, a new generation of video coding standards has emerged. In 2010, JCT-VC, a video coding joint group, began to develop...

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Application Information

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IPC IPC(8): H04N19/109
Inventor 吴炜宋朵刘炯冯磊
Owner XIDIAN UNIV
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