FIELD: computer engineering.
SUBSTANCE: invention relates to computer engineering. Image decoding device comprises a statistical decoder which receives information on internal prediction mode, applied to current block, which must be decoded, from a bit stream, wherein internal prediction mode indicates a specific direction from a plurality of directions; specific direction is indicated by one of number dx in horizontal direction and fixed number in vertical direction and a number dy in vertical direction and a fixed number in horizontal direction; and a block for performing internal prediction, which obtains a number of adjacent pixels located on one side from left side of current block and upper side of current block in accordance with position of current pixel and specific direction, indicated by internal prediction mode, wherein when number of adjacent pixels is equal to 1, it receives prediction value of current pixel based on adjacent pixel, and when number of adjacent pixels is equal to 2, receives prediction value of current pixel based on weighted average adjacent pixels.
EFFECT: technical result consists is improvement of efficiency of decoding video.
1 cl, 34 dwg, 5 tbl
