Fast judgment method and system for multifunctional video coding and storage medium

Abstract

The invention discloses a rapid judgment method and system for multifunctional video coding and a storage medium. The method comprises: calculating texture values of input coding tree units; carryingout quadtree division on the input coding tree unit to obtain four coding units; calculating texture difference values of a plurality of sub-parts in each coding unit, and carrying out skip judgment of a division mode on the coding unit according to the calculated texture difference values and a preset threshold value; adding the division modes which are judged to be not skipped in the division modes into a candidate list; and dividing the coding unit according to the division mode in the candidate list. According to the method, the division mode skip judgment of the coding unit is carried outby utilizing the textural features of each sub-part in the coding unit, the invalid division operation of the QTMT can be reduced through the skip judgment, and the coding efficiency is improved; themethod and system are suitable for QTMT partitioning schemes of all VCC partitioning tree types, and is wide in applicability. The method and system can be widely applied to the field of video coding.

Description

Technical field [0001] The invention relates to the field of video coding, in particular to a fast decision method, system and storage medium for multifunctional video coding. Background technique [0002] H.266 / Versatile Video Coding (VVC for short, multi-functional video coding) is a new generation of video coding standards and is still in the development stage. Compared with the previous generation standard H.265 / HEVC, VVC retains the technical framework of HEVC based on block prediction, and introduces many new technologies and coding tools. For example, VVC introduces Quadtree with on intra coding (intra prediction). Nested Multi-type Tree Using Binary and Ternary Splits (QTMT), Position Dependent Intra Prediction Combination (PDPC), Intra Sub-Partitions (ISP), etc. [0003] The QTMT partition scheme in VVC is quite different from the partition scheme in HEVC. HEVC only supports quadtree division, so all sub-blocks after division only have a square shape. However, in VVC, t...

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Problems solved by technology

These methods are only applicable to the quadtree partitioning scheme in H.265 / HEVC, and do not take into account the QTMT partitioning schemes currently adopted by VVC including quadtree, vertical binary tree, horizontal binary tree, vertical ternary tree or horizontal ternary tree division. So these methods no longer work

In addition, some scholars have proposed QTBT (Quadtree plus binary tree) fast partitioning algorithms based on convolutional neural networks (Convolutional Neural Networks, CNN) or machine learning (Machine Learning, ML), but these algorithms are only for quadtree and binary tree partitioning. , without considering the division of vertical ternary tree or horizontal ternary tree, the applicability is not strong

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