FIELD: data processing.
SUBSTANCE: group of inventions relates to encoding and decoding images. Result is provided by determining the intra prediction mode of the current block, determining an initial sample for intra prediction of the current block, determining a predetermined matrix based on the intra prediction mode, wherein the matrix is determined from a plurality of matrix groups in accordance with the size and shape of the current block and the prediction of the current block based on the initial sample and the matrix.
EFFECT: high efficiency of encoding and decoding images.
10 cl, 10 dwg, 3 tbl
