FIELD: information technology.
SUBSTANCE: image decoding device comprises an entropy decoder that extracts from the bit stream the information that displays the mode of intra-frame prediction, applied to the current block; a module of determining the reference pixels among neighbouring pixels adjacent to the current block, and the filtered neighbouring pixels, filtered from the said neighbouring pixels, based on the size of the current block and the mode of intra-frame prediction of the current block; the module of performing the intra-frame prediction, that performs the intra-frame prediction in the mode of intra-frame prediction relating to the current block, using the extracted information and the certain reference pixels. With respect to image the hierarchical dividing of the plurality of maximum encoding units is made, according to the information on the maximum size of the encoding unit, on the encoding units with the encoding depth in accordance with depth. The encoding unit of the current depth is one of the rectangular units of data obtained by dividing the encoding unit of higher depth. The encoding unit of the current depth is divided by the unit of prediction.
EFFECT: increased efficiency of decoding.
5 cl, 26 dwg, 3 tbl
