Inter-frame prediction method, video coding method, electronic equipment and storage medium

Abstract

The invention discloses an inter-frame prediction method, a video coding method, electronic equipment and a storage medium, and the method comprises the steps: dividing a current block into a plurality of sub-blocks, defining a first preset number of control points, and constructing a first candidate list according to the motion vector of an adjacent coded block of the current block; when the first number of the motion vector candidate groups in the first candidate list is smaller than a second preset number, a second candidate list is constructed from the time-space domain, the second candidate list comprises a second number of motion vector candidate groups, and the sum of the second number and the first number is smaller than or equal to the second preset number; and obtaining a final motion vector of each sub-block by utilizing the first candidate list and the second candidate list. Wherein the product of the width and the height of the current block is greater than or equal to a preset threshold. Visibly, the conditions for starting the affine prediction mode are broadened, so that more current blocks can start the high-efficiency affine prediction mode for encoding, and the encoding efficiency is improved.

Description

technical field [0001] The present application relates to the technical field of video coding, and in particular to an inter-frame prediction method, a video coding method, electronic equipment, and a storage medium. Background technique [0002] A video is formed by continuous playback of many still images, and each still image can be regarded as a frame. Since the values ​​of similar pixels in adjacent frames are usually relatively close, the color generally does not change suddenly, so this temporal correlation can be used for compression, which is inter-frame prediction. In simple terms, inter-frame prediction is to search for the block that best matches the current block in the reference frame image of the current block to predict the current block. One of the high-efficiency inter-frame prediction modes is the affine prediction mode, but the condition for enabling the affine prediction mode is that the width and height of the current block to be encoded are respective...

AI Technical Summary

Problems solved by technology

One of the high-efficiency inter-frame prediction modes is the affine prediction mode, but the condition for enabling the affine prediction mode is that the width and height of the current block to be encoded are respectively greater than or equal to the preset value, resulting in that some current blocks cannot enable affine Predictive mode for higher coding efficiency

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