Multifunctional video coding intra-frame division method and system and storage medium

Abstract

The invention discloses a multifunctional video coding intra-frame division method and system and a storage medium. The multifunctional video coding intra-frame division method comprises the followingsteps: extracting edge features of a coding tree unit by adopting an edge extraction algorithm; obtaining vertical edge texture features and horizontal edge texture features of a coding unit in the current coding tree unit according to the edge features of the current coding tree unit; and according to the vertical edge texture features and the horizontal edge texture features of the coding unitsin the current coding tree unit, performing division decision of the coding units. According to the multifunctional video coding intra-frame division method, edge texture features of the coding unitsare utilized to skip some division modes, so that the coding time is reduced, and the coding efficiency is improved; and according to the vertical edge texture features and the horizontal edge texture features of the coding units in the current coding tree unit, a horizontal binary division mode and a horizontal ternary division mode or a vertical binary division mode and a vertical ternary division mode are skipped, so that the coding quality is higher. The multifunctional video coding intra-frame division method 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 multifunctional video coding intra-frame division method, system and storage medium. Background technique [0002] ITU-T VCEG and ISO / IEC MPEG established the Joint Video Exploration Team (JVET) working group, which is mainly to study the potential requirements of future video coding standards. During the development of JVET, a new generation of video coding standard Versatile Video Coding (VVC, multifunctional video coding) was formed. Many new coding techniques have been researched and adopted in VVC, such as Quadtree with nested multi-type tree (QTMT), Position Dependent intra Prediction Combination (PDPC), Affine Motion Compensation Prediction (AMCP), etc. These techniques can greatly improve the encoding performance, but also greatly increase the encoding time. Therefore, it is necessary to find an efficient algorithm to achieve a better trade-off between coding efficiency an...

AI Technical Summary

Problems solved by technology

This method selects the decision tree as the classifier, and directly selects a division method from the horizontal binary division method, the vertical binary division method, the horizontal three-point selection method, the vertical three-point method and the quadtree partition method and skips Other division methods, although this method can speed up the encoding speed and save encoding time, but it only chooses one division method for intra-frame division, which will increase the encoded BD-rate (indicating that in the case of the same video quality, Changes in code rate), reduce the coded PSNR (ie peak signal-to-noise ratio), resulting in poor coding performance

Images