A method for early termination of multi-type tree structure block partition mode selection

A division mode and block division technology, which is applied in image communication, digital video signal modification, electrical components, etc., can solve the problems of high time complexity and achieve the effect of saving coding time and avoiding division mode prediction

Active Publication Date: 2022-07-26
HANGZHOU DIANZI UNIV
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Problems solved by technology

[0004] In order to solve the problem of extremely high time complexity in the selection process of the multi-type tree structure block division mode of VTM, the present invention discloses an H.266 / VVC multi-type tree structure block division mode selection early termination method

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  • A method for early termination of multi-type tree structure block partition mode selection
  • A method for early termination of multi-type tree structure block partition mode selection
  • A method for early termination of multi-type tree structure block partition mode selection

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[0062] The embodiments of the present invention are described below through specific specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments may be combined with each other under the condition of no conflict.

[0063] refer to figure 2 , 5 kinds of CU block division structures of H.266 / VVC are given, which are composed of 1 kind of quadtree, 2 kinds of binary trees and 2 kinds of ternary trees, wherein 2 kinds of binary trees and 2 kinds of ternary trees are the pending Select the multi-tree partiti...

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Abstract

The present invention discloses a method for early termination of multi-type tree structure block division mode selection, comprising the steps of: S1, using the first frame in the image group as a key frame to obtain an optimal decision threshold; S2, initializing all optional division modes of the current CU S3, select the i-th mode as the division mode of current CU from all optional division modes S; S4, be horizontal division or vertical division to carry out corresponding judgment according to the selected mode to carry out fast division decision; S5, according to all The selection mode is binary tree division or ternary tree division, and the corresponding judgment is made to make a fast partition decision. The present invention controls the threshold value through the first frame of the image group, so that the threshold value is more suitable for the current image frame, uses the spatial texture information of the image, avoids unnecessary division mode prediction, and can effectively reduce the coding algorithm on the premise of ensuring the coding effect. Computational complexity, encoding time is greatly saved while encoding performance loss is negligible.

Description

technical field [0001] The invention belongs to the technical field of video compression, and in particular relates to a method for early termination of multi-type tree structure block division mode selection. Background technique [0002] The emergence of ultra-high-resolution videos such as high-definition, ultra-high-definition and 4K videos, on the one hand, means that more bandwidth is required to transmit video data, and on the other hand, it also means that more storage space is required to save video data. In order to alleviate the resource requirements for video transmission and storage, video coding standards are a common and effective means of video compression technology. The goal is to maximize the video compression ratio without reducing the video quality after decoding. During the development of video coding standards, new breakthroughs have been sought in exploration and innovation, such as MPEG-1, MPEG-2, MPEG-4, H.261, H.263, H.264, and H.265. Currently, t...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N19/14H04N19/96H04N19/119H04N19/186H04N19/176
CPCH04N19/14H04N19/96H04N19/119H04N19/186H04N19/176
Inventor 姚英彪王娇娇杜晨杰徐欣冯维许晓荣
Owner HANGZHOU DIANZI UNIV
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