METHOD AND DEVICE FOR ENCODING/DECODING IMAGE SIGNALS Russian patent published in 2025 - IPC H04N19/119 H04N19/18 H04N19/503 

FIELD: data processing.

SUBSTANCE: invention relates to video encoding and decoding. Disclosed is a video decoding method, including steps of: analysing a non-zero flag indicating whether the residual coefficient is non-zero, from a bit stream, wherein when the non-zero flag is omitted, the residual coefficient for the location of the last non-zero residual coefficient is considered to be non-zero; analysing the absolute value information to determine the absolute value of the residual coefficient from the bit stream when a non-zero flag indicates that the residual coefficient is non-zero; and determining the absolute value of the residual coefficient based on the information on the absolute value. Absolute value information comprises a residual coefficient comparison flag indicating whether the residual coefficient is greater than the first value; and the parity flag is further analysed from the bit stream only when the residual coefficient is greater than the first value; and a parity flag indicates whether the value of the residual coefficient is an even number or an odd number.

EFFECT: high efficiency and rate of encoding/decoding.

8 cl, 49 dwg, 15 tbl