COMBINED SCALABILITY PROCESSING FOR MULTI-LAYER VIDEO CODING Russian patent published in 2018 - IPC H04N19/30 H04N19/187 H04N19/186 

FIELD: information technology.

SUBSTANCE: invention relates to the field of processing video signals. Method for interlayer video signal processing comprises steps of: receiving video signal comprising a base layer (BL) and an enhancement layer (EL); reconstructing a BL picture; performing a first interlayer processing, using a combined processing module that simultaneously performs inverse tone mapping and colour gamut conversion scalability processes using a three-dimensional (3D) lookup table (LUT) based on the sample bit depth of an input luma component and a sample bit depth of input chroma components, sample bit depth of an output luma component and a sample bit depth of output chroma components, wherein the scalability conversion processes of the colour gamut comprise scaling the reconstructed BL picture from the first colour gamut to the second colour gamut, which covers a wider range of colours, and performing a second interlayer processing with respect to the output data of the first interlayer processing, using the upsampling processing module.

EFFECT: technical result is to improve the quality of the video signal.

12 cl, 21 dwg