FIELD: information technology.
SUBSTANCE: image encoding method, involving: dividing a current picture into a unit having a predetermined size; determining internal prediction mode to be applied to the current unit to be encoded, according to the size of the current unit; and performing internal prediction with respect to the current unit according to the determined internal prediction mode, wherein the internal prediction mode includes a prediction mode for performing prediction using a drawn line having an angle tan-1(dy/dx), where dx and dy are integers, near each pixel in the current unit.
EFFECT: high efficiency of encoding video.
15 cl, 44 dwg, 5 tbl
