QP CHROMINANCE SHIFT AT SLIDE LEVEL AND ELIMINATION OF BLOCKING Russian patent published in 2017 - IPC H04N19/00 

FIELD: physics.

SUBSTANCE: method comprising the steps of: decoding the first video data block and the second video data block; determining the first luminance quantization parameter for the first video data block and the second luminance quantization parameter for the second video data block; for each of one or more chrominance components, the chroma quantization parameter offset value is determined; for each of one or more chrominance components, a chroma quantization parameter is calculated; for each of one or more chrominance components, the intensity for the deblocking filter of the chrominance component for the common edge is determined based on the chroma quantization parameter; and for each of one or more chrominance components, a blockade filter of the chrominance component is applied. The step of calculating the chrominance quantization parameter comprises the steps of: calculating an average value of the first luminance quantization parameter for the first video data block and the second luminance quantization parameter for the second video data block; and applying the chroma quantization parameter offset value to the average value.

EFFECT: elimination of blocking of video data coded blocks.

47 cl, 1 tbl, 6 dwg