Method, system and storage medium for multifunctional video coding inter-frame division

Abstract

The present invention discloses a method, system and storage medium for inter-frame division of multifunctional video coding. The method includes: determining that the coded frame of the current coding tree unit is an intra-coded frame or the first ratio is less than or equal to the first threshold and performing the next step ; Extract and calculate the vertical edge texture feature and the horizontal edge texture feature of the current coding unit; according to the vertical edge texture feature and the horizontal edge texture feature of the current coding unit, make a division decision of the current coding unit. The present invention utilizes the relative size of the first ratio, whether the coded frame is an intra-frame coded frame or the edge texture feature of the current coding unit to skip some division methods during inter-frame predictive coding, thereby improving the coding efficiency; according to the current coding unit The vertical edge texture features and horizontal edge texture features are used to select at least three division methods for recursive division, the BD‑rate is smaller, and the coding performance is better. The invention can be widely applied in 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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