CONTEXT-ADAPTIVE ENTROPY CODING USING HIGH-PROBABILITY SYMBOL SERIES CODING Russian patent published in 2016 - IPC H04N19/13 H03M7/00 

FIELD: radio engineering, communication.

SUBSTANCE: invention relates to processing digital signals, particularly to compressing data and improving entropy coding of video sequences. A method of processing a data stream consisting of a plurality of syntax elements is based on replacing syntax elements, whose values have a high probability of occurrence, with syntax elements whose values have a low probability. The method comprises determining context for a syntax element and calculating the probability of occurrence of values of those syntax elements in a model of a data stream having a defined context; replacing syntax elements of the data stream having a defined context if the calculated probability of occurrence of the value of the syntax element is higher than a given threshold with syntax elements whose values have a low probability.

EFFECT: high efficiency and low computational complexity of entropy coding.

13 cl, 4 dwg, 2 tbl