FIELD: computer engineering.
SUBSTANCE: invention relates to computer engineering. Video decoding device includes an extraction module, which obtains from a bit stream maximum split information for external mode, prediction mode information for coding unit and sub-split information on transformation unit; and a decoding module which determines maximum split level of transformation unit based on information of maximum split for external mode, when information on prediction mode indicates an external mode, wherein transformation unit is determined from coding unit; wherein decoding module splits current transformation unit into transformation units of next split level, when sub-split information on current transformation unit indicates split of current transformation unit, wherein next level of division is greater than current level of division, and performs inverse transformation on current transformation unit.
EFFECT: technical result consists in improvement of efficiency of decoding taking into account characteristics of image.
4 cl, 27 dwg, 1 tbl
