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CU block division method and device based on AVS3 coding historical information and medium

A technology of historical information and block division, applied to computer devices and storage media, based on the field of CU block division of AVS3 encoding historical information, can solve problems such as complex encoding algorithms, achieve low complexity, avoid BD-Rate soaring, and achieve high accuracy high effect

Pending Publication Date: 2022-06-24
SUN YAT SEN UNIV
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Problems solved by technology

[0011] Aiming at at least one technical problem such as the complexity of the coding algorithm existing in the current AVS3 video coding technology, the purpose of the present invention is to provide a CU block division method based on AVS3 coding history information, a computer device and a storage medium

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  • CU block division method and device based on AVS3 coding historical information and medium
  • CU block division method and device based on AVS3 coding historical information and medium
  • CU block division method and device based on AVS3 coding historical information and medium

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Embodiment Construction

[0041] In this embodiment, refer to Figure 4 , the CU block division method based on AVS3 coding history information comprises the following steps:

[0042] S1. Determine the parent CU block of the CU block to be divided;

[0043] S2. the division mode selected when the parent CU block is divided is the extended quad-tree division mode, then skip the extended quad-tree division mode;

[0044] For the first encoding process, the division mode to be skipped is determined through the following steps S3-S4:

[0045] S3. Obtain the intra prediction angle of the CU block to be divided;

[0046] S4. When the intra-frame prediction angle is the vertical direction, skip the horizontal division mode, otherwise, skip the vertical division mode;

[0047] For the non-first-time encoding process, the division mode to be skipped is determined through the following steps S5-S6:

[0048] S5. Obtain the optimal division mode selected in the first encoding process;

[0049] S6. When the op...

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Abstract

The invention discloses a CU block division method based on AVS3 coding historical information, a computer device and a storage medium, and the method comprises the steps: selecting an optimal division mode from candidate division modes, dividing a CU block to be divided in the optimal division mode, and the like, and determining a division mode to be skipped through the following steps: acquiring an intra-frame prediction angle of a CU block to be divided, skipping a horizontal division mode when the intra-frame prediction angle is in a vertical direction, and otherwise, skipping a vertical division mode. According to the method, the history and repeatability of the AVS3 encoder found by statistics are utilized, and the CU block is quickly divided based on coding history information such as the intra-frame prediction angle IPM, the optimal division mode of the first-time coding CU and the division mode of the parent CU, so that the coding speed and the coding quality are balanced, a complex texture detection algorithm does not need to be used, and the complexity is very low. The method is widely applied to the technical field of video coding.

Description

technical field [0001] The present invention relates to the technical field of video coding, in particular to a CU block division method based on AVS3 coding history information, a computer device and a storage medium. Background technique [0002] With the development of network technology, there are more and more ways of disseminating information through video, and the requirements for video coding technology are also increasing. For example, although AVS3 has higher encoding quality than AVS2, the time complexity is about doubled, which will lead to a decrease in encoding speed when other conditions remain unchanged, which is not conducive to the application of new video encoding technologies. [0003] Terminology Explanation: [0004] Video coding: Video coding is a type of compression technology. By using the coding method, the video source file is compressed into a bit stream file on the premise of preserving the quality as much as possible, which can save the storage...

Claims

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Application Information

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IPC IPC(8): H04N19/176H04N19/119H04N19/96H04N19/593H04N19/103
CPCH04N19/176H04N19/119H04N19/96H04N19/593H04N19/103
Inventor 梁凡贾一凡张坤
Owner SUN YAT SEN UNIV
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