METHOD AND DEVICE FOR CODING OR DECODING Russian patent published in 2017 - IPC H04N19/11 H04N19/593 H04N19/186 

FIELD: physics.

SUBSTANCE: decoding method comprises the steps of: extracting the first information in a bitstream; determining an internal chrominance component prediction mode for the current block according to the first information, the first information comprising information for indicating, whether the chrominance internal mode is predicted by the DM mode or the LM mode; when the internal chrominance component prediction mode can not be determined according to the first information, the second information is extracted, wherein the second information is carried by the FL-code having 2 binary symbols; and determining an internal chrominance component prediction mode according to the second information, wherein the second information is used to indicate the remaining mode from the internal chrominance component prediction modes, wherein the said remaining mode is one of the available internal chrominance prediction modes other than the mode that can be determined according to first information.

EFFECT: increasing the efficiency of video decoding.

24 cl, 6 dwg