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HEVC intraframe coding mode selection method based on texture division features

A technology of intra-frame coding and mode selection, applied in the field of digital video coding, which can solve the problem that the use of CTU texture features is not fully exploited.

Active Publication Date: 2017-07-18
ZHEJIANG UNIV OF TECH
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Problems solved by technology

[0006] Although the above methods have used the texture information of the video to reduce the computational complexity of the HEVC intra coding mode selection, the use of the texture features in the CTU has not been fully explored.

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  • HEVC intraframe coding mode selection method based on texture division features
  • HEVC intraframe coding mode selection method based on texture division features
  • HEVC intraframe coding mode selection method based on texture division features

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Embodiment Construction

[0049] The present invention will be described in detail below in conjunction with the examples, but the present invention is not limited thereto.

[0050] A HEVC intra-coding mode selection method based on texture division features, comprising the following steps:

[0051] (1) Input a CTU whose encoding mode is to be selected;

[0052] (2) Analyze the texture feature of the original pixel brightness value of the current CTU, and calculate the texture division identification of different size CUs and the texture feature value of 32×32CU;

[0053] (3) Predict the depth range of the current CTU by using the texture partition identifier and the texture feature value of the CU, and calculate the early termination coding partition identifier of the CU and the early termination prediction partition identifier of the PU;

[0054] (4) Using the depth range of the current CTU, the early-termination coding division identifier of the CU, and the early-termination prediction division ide...

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Abstract

The invention relates to an HEVC (High Efficiency Video Coding) intraframe coding mode selection method based on texture division features. The method includes steps of 1, inputting a CTU (Coding Tree Unit) with a to-be-selected coding mode; 2, performing texture feature analysis on original pixel brightness value of the current CTU and obtaining texture division marks of CUs of different sizes and a texture feature value of a 32*32 CU (Coding Unit) through calculation; 3, utilizing the texture division marks and the texture feature values of CUs, predicting a depth range of the current CTU and calculating an early termination coding division mark of the CUs and an early termination predication division mark of a PU (Predication Unit);4, utilizing the depth range of the current CTU, the early termination coding division mark of the CUs and the early termination predication division mark of the PU, implementing quadtree division of the current CTU. According to the invention, in a condition of maintaining good coding rate distortion performance, HEVC intraframe coding processing time is reduced effectively and at the same time, a comparatively good parallel treatment characteristic is achieved.

Description

technical field [0001] The invention relates to the field of digital video coding, in particular to a HEVC intra-frame coding mode selection method based on texture division features. Background technique [0002] With the rapid development of electronic information technology and broadband network technology, people's demand for video resolution continues to increase. High-definition video (720P and 1080P) is currently the mainstream resolution video, and ultra-high-definition video (4K and 8K) is also gradually into our life and work. [0003] In order to obtain high video coding efficiency, the Video Coding Experts Group (Video Coding Experts Group, VCEG) of the international organization ITU-T and the Moving Picture Experts Group (MPEG) of ISO / IEC jointly launched a new generation in 2013. High Efficiency Video Coding (HEVC). Compared with the previous generation of H.264, HEVC can save about 50% of the video code stream under the condition of the same video image qual...

Claims

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Application Information

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IPC IPC(8): H04N19/186H04N19/182H04N19/103H04N19/50H04N19/159
CPCH04N19/103H04N19/159H04N19/182H04N19/186H04N19/50
Inventor 朱威张晗钰洪伟聪商明将陈朋郑雅羽
Owner ZHEJIANG UNIV OF TECH
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