ENCODING CONVERSION COEFFICIENTS Russian patent published in 2019 - IPC H04N19/13 H04N19/91 

FIELD: physics.

SUBSTANCE: group of inventions relates to encoding and can be used to encode conversion coefficients. Decoding device comprises a retrieval means adapted to extract a set of symbols from the data stream for the current transform coefficient; desymbolizer configured to display a set of symbols on a transform coefficient level for a current transform coefficient in accordance with a symbolization scheme which is parametrizable in accordance with a symbolisation parameter, and a symbolization parameter determiner configured to determine symbolisation parameter (46) for the current transform coefficient in a relationship, by function (52) parametrized by the function parameter from the previously processed transform coefficients.

EFFECT: technical result is reduced complexity and high efficiency of encoding.

24 cl, 15 dwg, 1 tbl