MPM candidate list construction method and device, electronic equipment and storage medium

Abstract

The invention relates to an MPM candidate list construction method and device, electronic equipment and a storage medium. The MPM candidate list construction method comprises the following steps: thewidth and the height of a current prediction block are determined; whether the width and the height of the current prediction block are equal or not is judged, and if the width and height of the current prediction block are not equal, based on a relation between the width and the height of the current prediction block, a target prediction mode corresponding to the current prediction block is determined; and an MPM candidate list is constructed in the determined target prediction mode. Through the technical scheme provided by the method, the prediction mode can be cut, the representation rangeof the prediction mode can be reduced, the time for coding the prediction mode is shortened, and the coding efficiency of the prediction mode is improved; and moreover, the optimal prediction mode ofthe current prediction block can be predicted more accurately, and the image compression ratio is improved.

Description

technical field [0001] The present application relates to the technical field of video coding, and in particular to a method, a device, an electronic device and a storage medium for constructing an MPM candidate list. Background technique [0002] Intra prediction is a process of predicting a current prediction block through a reference block spatially adjacent to the current prediction block to reduce spatial redundancy. The most probable mode (Most probable mode, MPM) is a mode prediction technology widely used in intra prediction. In order to accurately predict video content, intra prediction usually includes multiple prediction modes. And, in order to effectively represent the final selected optimal prediction mode, an MPM candidate list is usually constructed. [0003] In the related art, the MPM candidate list usually includes a preset number of MPMs. The following takes the 67 prediction modes + 3MPM scheme proposed by JVET-K0529 as an example to illustrate. [00...

AI Technical Summary

Problems solved by technology

It can be seen that in the related art, during intra-frame prediction, the MPM contained in the MPM candidate list is relatively fixed, and the prediction mode is not tailored, so the efficiency of encoding the prediction mode is low

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