Decoding methods, decoders, video encoding methods, encoders, and computer-readable storage media

Abstract

The invention relates to a decoding method and decoding apparatus for decoding the current block of a circuit board, wherein the decoding method comprises the steps of: acquiring the flag values ​​of the most probable modes (Most Probable Mode). MPM) for the current block from the bit stream; obtain the MPM index for the current block from the bit stream, when the value of the MPM flag indicates that the image prediction mode for the current block is an image prediction mode included in the MPM set of image prediction modes; obtain the value of the image prediction mode for the current block, based on the MPM index and the MPM set for the current block; In which case the prediction mode in the image of the neighboring block to the left of the current block is flat mode, and the prediction mode in the image of the neighboring block to the top of the current block is flat mode, the MPM combination of prediction modes includes: The invention relates to a flat mode, an OC mode, a vertical mode, a horizontal mode, a predictive mode in the image corresponding to the vertical mode with the first trial deviation, and a predictive mode in the image corresponding to the vertical mode with the second trial deviation. The invention also relates to a codec, a method of video encoding, and a computer-readable storage medium.