Inter-frame prediction method, encoder, decoder and storage medium

Abstract

The embodiment of the invention provides an inter-frame prediction method, an encoder, a decoder and a storage medium. The inter-frame prediction method comprises the following steps: determining a prediction mode parameter of a current block; determining a GEO parameter of the current block when the prediction mode parameter indicates that the inter prediction of the current block is determined using GEO; determining a first predicted value and a second predicted value according to the GEO parameter; determining a weight index corresponding to a pixel point in the current block according to the GEO parameter; respectively carrying out clamping processing on the weight indexes corresponding to the pixel points in the current block to obtain weight index absolute information corresponding to the pixel points in the current block; the clamping processing is to clamp the value of the weight index corresponding to the pixel point in the current block to a range from 0 to half of a preset value; determining a first weight value and a second weight value based on the weight index absolute information corresponding to the pixel points in the current block; and obtaining an inter-frame prediction value of the current block by using the first prediction value, the first weight value, the second prediction value and the second weight value.

Description

[0001] This application is a divisional application of an application with an application date of December 31, 2019, an application number of 2019800996070, and an invention title of "An Inter-frame Prediction Method, Encoder, Decoder and Storage Medium". technical field [0002] The embodiments of the present application relate to video coding technologies, and relate to, but are not limited to, an inter-frame prediction method, an encoder, a decoder, and a storage medium. Background technique [0003] In video encoding and decoding, in the process of encoding and decoding the current block, in addition to intra-frame prediction, an inter-frame prediction mode can also be used. Inter-frame prediction can include motion estimation and motion compensation. For motion compensation, an inter-frame geometrical partitioning prediction mode (Geometrical partitioning for inter blocks, GEO) can be used to divide the current block between frames into two non-rectangular partitions for...

AI Technical Summary

Problems solved by technology

[0005] However, there are many repeated weights in the existing weight mapping table, and the weight table is too long, which makes the data storage overhead during inter-frame prediction larger, and the text and code are more complicated.

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