Inter-frame prediction method and device

Abstract

The embodiment of the invention discloses an inter-frame prediction method and device, relates to the technical field of video encoding and decoding, and solves the problems that prediction pixels obtained in an inter-frame prediction mode in the prior art have certain discontinuity in the spatial domain, the prediction efficiency is influenced, and the prediction residual energy is relatively large. According to the specific scheme, the method comprises the steps of analyzing a code stream to obtain motion information of a to-be-processed image block; performing motion compensation on the to-be-processed image block based on the motion information to obtain a prediction block of the to-be-processed image block, wherein the prediction block of the to-be-processed image block comprises a prediction value of the target pixel point; and performing weighting calculation on the reconstruction values of the one or more reference pixel points and the prediction value of the target pixel pointso as to update the prediction value of the target pixel point, wherein the reference pixel points and the target pixel point have a preset spatial domain position relationship.

Description

[0001] This application is a divisional case of a Chinese patent application submitted to the State Intellectual Property Office of China on July 31, 2020, with the application number 201980011364.0 and the application title "An inter-frame prediction method and device". Entering the national stage, PCT / CN2019 / 107060 requires submission of a Chinese patent application with the State Intellectual Property Office of China on September 21, 2018, with the application number 201811109950.2 and the application name "A Method and Device for Video Codec", filed in 2018 A Chinese patent application filed with the State Intellectual Property Office of China on November 2, 2018, with the application number 201811303754.9, and the application title is "An Inter-frame Prediction Method and Device" and submitted to the China Receiving Office on October 1, 2018, with the international application number It is the priority of the international patent application PCT / CN2018 / 109233, the applicatio...

AI Technical Summary

Problems solved by technology

However, since the inter-frame prediction technology only considers the time-domain correlation between the same objects in the adjacent frames of the image, but does not consider the spatial domain correlation problem, this will cause the prediction pixels obtained by the existing inter-frame prediction mode to be in the spatial domain. There is a certain discontinuity in the above, which affects the prediction efficiency and causes a large prediction residual energy

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