Multi-type tree structure block division mode decision early termination method

A division mode, early termination technology, applied in image communication, digital video signal modification, electrical components, etc., can solve the problem of high time complexity, save coding time, and avoid the effect of division mode prediction

Active Publication Date: 2021-04-27
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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  • Multi-type tree structure block division mode decision early termination method
  • Multi-type tree structure block division mode decision early termination method
  • Multi-type tree structure block division mode decision early termination method

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[0062] The implementation of the present invention is 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 content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, in the case of no conflict, the following embodiments and features in the embodiments can be combined with each other.

[0063] refer to figure 2 , 5 kinds of CU block division structures of H.266 / VVC are given, consisting of 1 quadtree, 2 binary trees and 2 ternary trees, of which 2 binary trees and 2 ternary trees are to be described in the present invention Select the multi-tree partition mode. The f...

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Abstract

The invention discloses a multi-type tree structure block division mode selection early termination method. The method comprises the following steps: S1, taking a first frame in an image group as a key frame to obtain an optimal decision threshold; S2, initializing all optional division modes of the current CU; S3, selecting the ith mode from all selectable division modes S as the division mode of the current CU; S4, performing corresponding judgment according to whether the selected mode is horizontal division or vertical division so as to perform quick partition decision; S5, carrying out corresponding judgment according to whether the selected mode is binary tree division or ternary tree division so as to carry out rapid partition decision. Threshold control is performed through the first frame of the image group so that the threshold is enabled to be more suitable for the current image frame, unnecessary division mode prediction can be avoided by using the spatial domain texture information of the image, the computational complexity of the coding algorithm can be effectively reduced on the premise of ensuring the coding effect, and the coding efficiency can be enhanced, the encoding time is greatly saved, and the encoding performance loss can be ignored.

Description

technical field [0001] The invention belongs to the technical field of video compression, and in particular relates to a multi-type tree structure block division mode selection early termination method. Background technique [0002] The emergence of ultra-high-resolution video such as high-definition, ultra-high-definition, and 4K video, on the one hand, means that a larger bandwidth is required to transmit video data, and on the other hand, it also means that a larger storage space is required to save video data. In order to alleviate the resource requirements of video transmission and storage, video coding standard is a commonly used and effective means of video compression technology. The goal is to maximize the video compression ratio without reducing the video quality after video 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. Cu...

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Application Information

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Patent Type & Authority Applications(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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