Intra-frame prediction method and device, electronic equipment and medium

Abstract

The invention discloses an intra-frame prediction method and device, electronic equipment and a medium. The method comprises the following steps: determining a first neighbor reference pixel value of a current prediction block based on a first original pixel value of a neighbor coding block of the current prediction block; roughing the initial mode set based on a first rate distortion cost algorithm and the first neighbor reference pixel value to obtain a first reference mode with the minimum rate distortion cost; performing pixel reconstruction on the first original pixel value to obtain a second neighbor reference pixel value; and selecting a target intra-frame prediction mode from a first intermediate mode set of the first reference mode and the second reference mode of the neighbor coding block based on a second rate distortion cost algorithm and a second neighbor reference pixel value, and calculating a target intra-frame prediction value of the current prediction block by using the target intra-frame prediction mode. According to the method, the original pixels of the neighbor coding blocks replace the reconstructed pixels to complete the RMD step, the processing efficiency of the step is improved, and the overall processing efficiency when hardware executes the intra-frame prediction method is improved.

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