Picture prediction method, encoder, decoder, and storage medium

Abstract

To provide a picture prediction method, encoder, decoder and storage medium that use a Matrix-based Intra Prediction (MIP) mode.SOLUTION: An encoder sets a value of an MIP mode parameter as indicating the use of the MIP mode and writes it into a bitstream; determines the MIP mode of a current block; determines, based on the MIP mode, prediction values for luma and chroma components corresponding to the current block; and writes the MIP mode of the current block into the bitstream. The decoder parses the bitstream and determines an MIP mode parameter of the current block; if the MIP mode parameter value indicates that the current block uses the MIP mode to determine an intra prediction value of the current block, parses the bitstream, determines the MIP mode of the current block and prediction values of luma and chroma components corresponding to the current block based on the MIP mode; and decodes the current block based on the prediction values.SELECTED DRAWING: Figure 7

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