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Fast coding unit division method for H.266/VVC intra-frame prediction coding

An intra-frame predictive coding and fast coding technology, applied in the field of video coding, can solve problems such as increased computational complexity, and achieve the effect of reducing computational complexity and saving coding time

Inactive Publication Date: 2022-08-09
HUAQIAO UNIVERSITY
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Problems solved by technology

[0004] Compared with the quadtree division method of H.265 / HEVC, the QTMT structure of H.266 / VVC has greatly improved the compression performance, but the computational complexity has also greatly increased

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  • Fast coding unit division method for H.266/VVC intra-frame prediction coding

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[0059] In the present invention, the terms "first", "second", "third", etc. are only used to distinguish similar objects, and are not necessarily used to describe a specific sequence or sequence, nor should they be construed as indicating or implying relative importance sex. In the description, the orientation or positional relationship indicated by "up", "down", "left", "right", "front" and "rear" is based on the orientation or positional relationship shown in the drawings, only In order to facilitate the description of the present invention, it is not indicated or implied that the referred device must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the protection scope of the present invention. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific situations.

[0060] In addition, in the description of t...

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Abstract

According to the fast coding unit division method for H.266 / VVC intra-frame prediction coding, the texture complexity of a current coding CU is judged according to a texture descriptor, if the current coding CU is a flat region, division of the current CU is terminated, quadtree division is carried out on a CU block with the size of 64 * 64 to obtain a CU block with the size of 32 * 32, horizontal and vertical activity degrees are calculated, and the CU block with the size of 32 * 32 is obtained. If the difference between the horizontal activity degree and the vertical activity degree is smaller than a set threshold value, a VTM default mode is adopted, if the horizontal activity degree is larger than the vertical activity degree, texture activity degrees of quadtree division, horizontal binary tree division and horizontal ternary tree division are calculated, and if the vertical activity degree is larger than the horizontal activity degree, texture activity degrees of quadtree division, horizontal binary tree division and horizontal ternary tree division are calculated; the texture activity degrees of quadtree division, vertical binary tree division and vertical ternary tree division are calculated, the texture activity degrees are judged, a corresponding division mode is selected, and otherwise, a VTM default mode is adopted; according to the method, flat CU block division can be terminated in advance, a large amount of cost calculation is skipped, and the coding time is simply and effectively saved.

Description

technical field [0001] The present invention relates to the field of video coding, in particular to a fast coding unit division method for H.266 / VVC intraframe prediction coding. Background technique [0002] In recent years, with the rapid development of 5G and smart IoT technologies, high-definition ultra-high-definition video (2K, 4K, 8K) has gradually been integrated into all aspects of people's lives, providing people with a better viewing experience. However, high-definition and ultra-high-definition video has a huge amount of data. The previous generation video coding standard H.265 / HEVC can no longer meet the needs of transmitting huge video data within a limited bandwidth. It is urgent to develop a coding standard with better coding performance. The Expert Group (MPEG) and the Video Coding Experts Group (VCEG) established JVET and formulated a new generation of video coding standard H.266 / VVC. Like the previous coding standards, H.266 / VVC still uses a block-based h...

Claims

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Application Information

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IPC IPC(8): H04N19/182H04N19/593H04N19/96
CPCH04N19/593H04N19/96H04N19/182
Inventor 曾焕强李鸿辉陈婧朱建清施一帆陈龙涛
Owner HUAQIAO UNIVERSITY
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