FIELD: physics.
SUBSTANCE: invention relates to video encoding. Disclosed is a method of decoding an image using a decoding device and includes steps of determining the intra-frame prediction mode of the current block in the image from the intra-frame prediction modes predetermined in the decoding device, wherein the intra-frame prediction modes include a planar mode, a direct coding mode, a dual intra-frame prediction mode and a plurality of directional modes; determining reference samples for intra-frame prediction of the current block based on the fact that the intra-frame prediction mode is a dual intra-frame prediction mode; and performing intraframe prediction for current sample in current block based on reference samples, wherein the reference counts include an upper reference count adjacent to the current block, a left reference count adjacent to the current block, and a right reference count adjacent to the current block.
EFFECT: efficient performance of intra-frame prediction with respect to a target encoding/decoding unit when encoding/decoding a video signal.
6 cl, 31 dwg, 3 tbl
