METHOD AND DEVICE FOR ENCODING VIDEO USING TRANSFORMATION INDEX AND METHOD AND DEVICE FOR DECODING VIDEO USING TRANSFORMATION INDEX Russian patent published in 2018 - IPC H04N19/60 H04N19/122 H04N19/96 H04N19/44 

FIELD: physics.

SUBSTANCE: device contains a bitstream receiver for encoded video; an extracting unit that extracts separation information from the bitstream, indicating, whether the encoding unit is divided, and transformation index information indicating, whether the current-level transformation unit included in the encoding unit is divided among, at least, one encoding unit; and a decoder that determines, at least, one encoding unit using the separation information, divides the current-level transformation unit into lower-level transformation units when transformation index information indicates the division of the current-level transformation unit and performs an inverse transformation on the current-level transformation unit for forming the residual data corresponding to the current-level transformation unit when transformation index information indicates the lack of separation of the current-level transformation unit.

EFFECT: increasing the efficiency of decoding information by using the transformation index.

4 cl, 23 dwg, 1 tbl