METHOD AND DEVICE FOR INTERNAL PREDICTION Russian patent published in 2022 - IPC H04N19/159 H04N19/593 H04N19/11 

FIELD: image encoding/decoding.

SUBSTANCE: invention relates to the field of image encoding and decoding, in particular to a method for internal prediction. A method for compiling a list of the most probable modes (hereinafter – MPM) for the prediction process corresponding to a video block is proposed. The method includes: determination of whether the left block of the current encoding block is available or not, if the left block of the current encoding block is available, addition of an internal prediction mode of the left block to MPM list; determination of whether the upper block of the current encoding block is available or not, if the upper block of the current encoding block is available, addition of an internal prediction mode of the upper block to MPM list; addition of an offset to the prediction mode of the left block to obtain a new prediction mode, if the left block of the current encoding block is available, and the internal prediction mode of the left block is an angular mode; and addition of the new prediction mode to MPM list, if the new prediction mode is not in MPM list; or addition of an offset to the prediction mode of the upper block to obtain the prediction mode of the upper block with an offset, if the upper block of the current encoding block is available, and the internal prediction mode of the upper block is an angular mode; and addition of the prediction mode of the upper block with an offset to MPM list, if the prediction mode of the upper block with an offset is not in MPM list. MPM list is used to obtain an index value corresponding to the prediction mode of the image block to increase encoding efficiency.

EFFECT: increase in the efficiency of encoding/decoding based on compiling MPM list.

14 cl, 1 tbl, 10 dwg