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

Abstract

The invention discloses a multifunctional video coding inter-frame division method and system and a storage medium. The method comprises the following steps of: executing the next step when it is determined that a coding frame of a current coding tree unit is an intra-frame coding frame or a first ratio is less than or equal to a first threshold value; extracting and calculating vertical edge texture features and horizontal edge texture features of the current coding unit; and performing division decision of the current coding unit according to the vertical edge texture features and the horizontal edge texture features of the current coding unit. According to the invention, during inter-frame predictive coding, the relative size of the first ratio and whether the coding frame is an intra-frame coding frame or not or the edge texture feature of the current coding unit are used for skipping some division modes, so that the coding efficiency is improved; at least three division modes areselected for recursive division according to the vertical edge texture features and the horizontal edge texture features of the current coding unit, the BD-rate is smaller, and the coding performanceis better. The 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 inter-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 to divide the coding unit, which will increase the encoded BD-rate (indicating that in the case of the same video quality, Changes in code rate), reduce the peak signal-to-noise ratio PSNR of encoding, resulting in poor encoding performance

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