ASSIGNMENT OF PULSE-CODE MODULATION OF REGION OF QUANTIZED ON BLOCK BASIS RESIDUALS FOR INTRA-PREDICTION MODE DERIVATION Russian patent published in 2024 - IPC H04N19/11 H04N19/105 H04N19/159 H04N19/46 

FIELD: physics.

SUBSTANCE: invention relates to image encoding means. First block of the picture included in the encoded video bit stream is obtained. Second block of the picture, which is encoded using a block-quantized residue modulation (BDPCM) mode, is determined. Vertical intra-prediction mode is determined to be added to the list of intra-prediction modes for the first block based on a comparison between the vertical BDPCM mode and the vertical intra-prediction mode. Vertical intra prediction mode is added to the list of intra prediction modes for the first block. Based on information from the encoded video bitstream and based on the list of intra-prediction modes, the prediction mode for use for decoding the first block is determined. First block is decoded using the determined prediction mode. Information from the encoded video bitstream includes an intra-prediction mode list flag indicating whether the prediction mode for use for decoding the first block is among the number of prediction modes included in the intra-prediction mode list.

EFFECT: high coding efficiency.

41 cl, 2 tbl, 14 dwg