FIELD: information technologies.
SUBSTANCE: in this method they accept a largest coding unit (LCU) of video data divided into a set of coded units (CU) with a small size of the unit in accordance with the scheme of quadrant tree division; they determine whether the CU includes non-zero coefficients of transformation by means of decoding of coded data for reproduction of indication of the fact whether the CU includes non-zero coefficients of transformation; syntax elements are decoded for the CU, to indicate the change in the quantisation parameter for the CU relative to the predicted parameter of quantisation, if CU includes non-zero coefficients of transformation, besides, one or more elements of syntax are decoded from the position within limits of coded video data.
EFFECT: increased quality of data compression.
30 cl, 8 dwg
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