LAYER DECOMPOSITION IN HIERARCHICAL VDR CODING Russian patent published in 2016 - IPC H04N19/124 H04N19/30 

FIELD: computing technology.

SUBSTANCE: invention relates to computer technology. Coding method includes receiving an input VDR-image in the sequence of input images, said VDR is wide or high dynamic range, wherein the input image comprises VDR-first bit depth; selection of a particular function improved quantization of one or more improved quantization functions available; applying quantization to the Enhanced-VDR input image to generate input image base layer, wherein the input image comprises a second base layer bit-depth that is less than the first bit depth; compressing the image data obtained from the input image of the base layer to the base layer video (BL); and residual compression of image data between the input image and VDR-predicted image generated from the input image of the base layer in one or more video enhancement layer (EL).

EFFECT: technical result is to minimize the amount of image data with the visual dynamic range (VDR), which shall be carried forward to expansion levels.

21 cl, 9 dwg