Filtering method, filtering model training method, and related apparatus

Abstract

This application discloses a filtering method, a filtering model training method, and a related apparatus, and belongs to the field of coding technologies. The method includes: determining K groups of filtering models based on a quantization parameter of a target image, determining a reconstructed block corresponding to a current coding block in the target image, determining a target filtering model from the K groups of filtering models, and filtering the reconstructed block based on the target filtering model. A same group of filtering models is applicable to coding blocks with same coding quality, different groups of filtering models are applicable to coding blocks with different coding quality, and different filtering models in a same group of filtering models are applicable to coding blocks with different content.