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Probability-based intra-frame encoder optimization method

An intra-frame coding and optimization method technology, applied in the field of video coding, can solve the problems of high complexity of the HEVC intra-frame prediction algorithm and cannot meet the needs of efficient real-time transmission, and achieve the effect of reducing coding complexity

Active Publication Date: 2018-11-23
FUZHOU UNIVERSITY
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing HEVC intra-frame prediction algorithm has high complexity. In actual use, the coding efficiency of video images is very important, especially when used for real-time transmission. The existing algorithm cannot meet the requirements of efficient real-time transmission.

Method used

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Experimental program
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Embodiment 1

[0070] In order to verify the effectiveness of the algorithm of the present invention, we conduct experiments on the HEVC standard reference code HM16.9. Using quantization parameters (quantization parameter, QP) 22, 27, 32, 37, LCU size is 64×64, maximum depth level is 3, only all I frames are tested. The experimental results are shown in Table 1.

[0071] Table 1 Experimental results

[0072]

[0073] It can be seen that the present invention achieves the purpose of greatly reducing coding complexity under the premise of ensuring video quality performance.

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Abstract

The invention relates to a probability-based intra-frame encoder optimization method. The method comprises: S1, constructing a prediction candidate mode list; S2, listing a probability of becoming anoptimal prediction mode by a first candidate mode according to the prediction candidate mode list and terminating mode selection in advance; and S3, on the basis of lognormal distribution of RD costs,setting a basis of carrying out CU division and completing advanced termination of CU division. Therefore, the efficiency of video coding is improved on the premise that the video quality is guaranteed.

Description

technical field [0001] The invention relates to the technical field of video coding, and specifically designs a probability-based intra-frame encoder optimization method. Background technique [0002] HEVC video compression is already one of the essential home entertainment in our life, if there is no HEVC, then we will live in a world with only dozens of TV channels in the world. unbelievable. Digital technology first appeared in the UK. At that time, people already had TV sets. Through the continuous evolution of digital technology, the number of terrestrial TV channels has rapidly grown from 5 to more than 30, greatly enriching people's daily life entertainment. [0003] The existing HEVC intra-frame prediction algorithm has high complexity. In actual use, the coding efficiency of video images is very important, especially when used for real-time transmission. The existing algorithm cannot meet the requirements of efficient real-time transmission. Contents of the inven...

Claims

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Application Information

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IPC IPC(8): H04N19/11H04N19/122H04N19/124
CPCH04N19/11H04N19/122H04N19/124
Inventor 魏宏安王明海赵铁松周彬倩庄重文
Owner FUZHOU UNIVERSITY
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