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A coding mode selection method for HEVC

A technology of coding mode and screening method, applied in the fields of digital video signal modification, electrical components, image communication, etc., can solve the problems of huge computational complexity, subjective visual redundancy, and insufficient consideration of human visual redundancy, etc. The effect of improving the subjective quality of coding, improving the subjective quality of video images, and reducing computational complexity

Active Publication Date: 2017-01-25
SOUTHWEST JIAOTONG UNIV
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Problems solved by technology

However, the search-based rate-distortion optimization mode selection method is adopted in the HEVC coding framework, and its traversal search process brings huge computational complexity.
On the other hand, traditional video compression methods are mainly based on information theory, from the perspective of prediction structure, to reduce the time and space redundancy in the video, but they have not fully considered the visual redundancy of the human eye. With the understanding of the characteristics of human visual perception Subjective visual redundancies in videos continue to be uncovered due to the depth and accuracy of associated computational models

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  • A coding mode selection method for HEVC
  • A coding mode selection method for HEVC
  • A coding mode selection method for HEVC

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[0027] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0028] Any feature disclosed in this specification (including any appended claims and abstract), unless expressly stated otherwise, may be replaced by alternative features which are equivalent or serve a similar purpose. That is, unless expressly stated otherwise, each feature is one example only of a series of equivalent or similar features.

[0029] use figure 2 The encoding framework of the HEVC mode selection method of the present invention is shown, and its output code stream can be applied to any standard HEVC decoder. Now take the encoding process of a certain frame of a video sequence as an example, and the encod...

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Abstract

The invention discloses a coding mode selection method for HEVC, which predicts the CTU division, CU coding mode and PU inter-frame coding mode in HEVC coding according to the space-time domain characteristics of the current coded image content, and reduces the HEVC frame Number of traversals for mode selection. Therefore, the coding efficiency of HEVC is improved without affecting the image coding quality. The code stream output by the method of the present invention conforms to the HEVC standard, and can further combine the visual perception characteristics of the human eye to realize the selection of the coding mode and improve the subjective quality of the coded image.

Description

technical field [0001] The invention belongs to the field of video coding and processing, and in particular relates to the research of HEVC (High Efficiency Video Coding, high-efficiency video coding) coding mode selection method. Background technique [0002] Under the demand of high-definition (1080P) and ultra-high-definition (2K, 4K) video coding technologies such as H.264, the data rate generated by the coding increases sharply, which brings huge challenges to the storage and network transmission of video data. Shock, the existing coding technology has been difficult to adapt. Therefore, it is imperative to propose a coding technique with better compression ratio. To solve this problem, the JCT-VC (Joint Collaborative Team on Video Coding) working group has developed a new generation of video compression HEVC (High Efficiency Video Coding) with higher compression efficiency. The HEVC video coding framework has made great improvements in coding efficiency and other asp...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N19/103H04N19/109H04N19/176
Inventor 闫川彭强刘翔凯任健鹏蔡成能
Owner SOUTHWEST JIAOTONG UNIV
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