Fast Selection Method of HEVC Prediction Mode Based on Time Domain Correlation

A prediction mode and optimal prediction mode technology, applied in the field of video processing, can solve the problems of HEVC prediction mode selection speed not being further improved, no time-domain correlation analysis, etc., so as to achieve low selection computational complexity and reduce encoding time. , Mode selection results are accurate

Active Publication Date: 2017-10-24
XIDIAN UNIV
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Problems solved by technology

However, at present, these methods do not conduct a detailed analysis of temporal correlation, so that the speed of HEVC prediction mode selection cannot be further improved.

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  • Fast Selection Method of HEVC Prediction Mode Based on Time Domain Correlation
  • Fast Selection Method of HEVC Prediction Mode Based on Time Domain Correlation
  • Fast Selection Method of HEVC Prediction Mode Based on Time Domain Correlation

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Embodiment Construction

[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 a method for quickly selecting an HEVC prediction mode based on time-domain correlation, which mainly solves the problem of high computational complexity of prediction mode selection in the high-efficiency video coding standard HEVC inter-frame coding process. The implementation steps are: (1) Divide the motion intensity of the video sequence into three states: slow motion, moderate motion, and fast motion; (2) Statistically calculate the best prediction of the coding unit under the two motion intensities of slow motion and moderate motion (3) According to the probability relationship, construct a candidate prediction mode table; (4) According to the candidate prediction mode table, encode the inter-frame coding unit to obtain the best predictive mode. On the premise that the video rate-distortion performance is approximately constant, the present invention effectively reduces the computational complexity of prediction mode selection, improves the speed of prediction mode selection, reduces encoding time, and can be used for 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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Patent Type & Authority Patents(China)
IPC IPC(8): H04N19/109
Inventor 吴炜宋朵刘炯冯磊
Owner XIDIAN UNIV
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