VIDEO SIGNAL DECODING METHOD Russian patent published in 2017 - IPC H04N19/124 H04N19/157 

FIELD: physics.

SUBSTANCE: method of decoding a video signal includes: receipt of differential coefficients relating to the current block and conversion skip mode index for the current block of video signal. The conversion skip mode index indicates, whether the inverse conversion is skipped for the current block. The conversion skip mode index is obtained for both the luminance component of the current block and for the chrominance component of the current block; obtaining the inverse quantized difference coefficients by performing inverse quantization of the difference coefficients; obtaining a difference block relating to the current block by selectively performing an inverse conversion for the inverse quantized difference coefficients of the current block based on the conversion skip mode index; obtaining a prediction block relating to the current block; and reconstructing the current block by using a difference block and a prediction block. Herewith it is determined, whether or not to perform the inverse conversion skip for the chrominance component of the current block, regardless of the luminance component of the current block.

EFFECT: increasing the conversion efficiency and compression of video information.

5 cl, 8 dwg, 6 tbl