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Low-complexity fast VVC intra-frame coding method

An intra-frame coding and low-complexity technology, applied in the field of fast VVC intra-frame coding, can solve the problems of high complexity of VVC coding, and achieve the effects of improving coding performance, strong practicability, and improving efficiency

Pending Publication Date: 2022-03-22
HANGZHOU DIANZI UNIV
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Problems solved by technology

[0004] The purpose of the present invention is to address the shortcoming of the high complexity of the existing VVC coding, and propose a low-complexity fast VVC intra-frame coding method, which can reduce the coding complexity while ensuring the coding quality, especially for high-resolution The video has very good encoding performance

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  • Low-complexity fast VVC intra-frame coding method
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  • Low-complexity fast VVC intra-frame coding method

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Embodiment Construction

[0048] The present invention will be further described below in conjunction with the accompanying drawings and implementation examples.

[0049] like Figure 1-7 As shown, a fast general video coding method based on context correlation, using the VTM4.0 model of VVC video coding, the test conditions refer to the general test conditions of JVET-N1010 (JVET-N1010 CTC SDR), the full Intra encoding configuration file encoder_intra_vtm.cfg.

[0050] A fast and general video coding method based on context correlation, first of all, the flow chart of the CU partition method is as follows image 3 As shown, secondly, regarding the CU mode selection part, the schematic diagram of the main direction selection of the intra prediction mode is as follows Figure 4 As shown, the method flow chart is as follows Figure 5 As shown, the specific steps of the CU division module based on context correlation are:

[0051] Step (1), calculate the variance Var of CU block, in order to judge the...

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Abstract

The invention discloses a fast VVC (Video Video Coding) intra-frame coding method with low complexity. According to the method, a CU division module based on context correlation firstly divides a CU into a complex block and a simple block according to texture features of a current CU block; all types of division are terminated in advance for a simple block, and binary tree division and ternary tree division are continued for a complex block, so that the problem of overhigh complexity caused by multi-type tree division is solved. In addition, the encoder decides the optimal mode of the current CU. The method comprises the following steps: firstly, optimizing an intra-frame roughing part, selecting a central angle every four angles in an angle mode of which the index value of an intra-frame angle prediction mode is 2-67, and then respectively adding two angle mode searches before and after a small range based on the central angle; and then, optimizing a finely selected part in the frame by utilizing a probability distribution characteristic of a most probable mode (MPM). According to the method disclosed by the invention, the complexity of VVC coding is reduced while the coding quality is ensured, and particularly, the method has very good coding performance for a high-resolution video.

Description

technical field [0001] The invention belongs to the field of fast coding of multifunctional video coding (VVC), and mainly relates to a low-complexity fast VVC intra-frame coding method. Background technique [0002] In recent years, with the rise of new Internet applications, global traffic has continued to grow rapidly. On the one hand, as the world enters the era of mobile Internet, emerging Internet applications represented by the Internet of Things, cloud computing, and mobile Internet have risen rapidly, driving wireless traffic and mobile device traffic to continue to grow rapidly. On the other hand, the further deepening of global digital transformation will continue to expand the demand for IP networks and promote the continuous increase of IP network traffic. Especially for the rise of new applications such as 4K, 8K ultra-high-resolution video, high-dynamic range HDR (High-Dynamic Range) video and 360-degree video, the existing coding standard H.265 / HEVC (High Ef...

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Application Information

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IPC IPC(8): H04N19/96H04N19/11H04N19/119
CPCH04N19/96H04N19/11H04N19/119
Inventor 陆宇张志黄晓峰周洋殷海兵杨萌
Owner HANGZHOU DIANZI UNIV
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