IMAGE DECODING METHOD AND DEVICE AND IMAGE ENCODING METHOD AND DEVICE IN THE IMAGE ENCODING SYSTEM Russian patent published in 2022 - IPC H04N19/11 H04N19/132 H04N19/105 H04N19/593 H04N19/176 H04N19/70 

FIELD: imaging technology.

SUBSTANCE: invention relates to means for encoding images. The type of intra-prediction for the current block as an intra-prediction based on a multiple reference line (MRL) is determined representing the type of intra-prediction based on an intra-prediction reference line that is not adjacent to the current block. A list of potentially suitable variants of intra-prediction modes is being built, including the DC-intra-prediction mode. The intra-prediction mode of the current block is extracted based on a list of potentially suitable options. A discrete prediction count of the current block is extracted based on the intra-prediction mode. Based on the intra-prediction mode of the current block extracted as the DC-intra-prediction mode, the DC value is extracted based on at least one of (i) the reference discrete sampling with coordinates (0, -refIdx-1) to the reference discrete sampling with coordinates (W-1, -refIdx-1) in the reference line of intra-prediction and (ii) the reference discrete sampling with coordinates (-refIdx-1, 0) to the reference discrete sampling with coordinates (-refIdx-1, H-1) in the reference line of intra-prediction.

EFFECT: increase in encoding efficiency.

15 cl, 25 dwg