CLASSIFICATION IN ADAPTIVE CIRCUIT FILTRATION Russian patent published in 2024 - IPC H04N19/117 H04N19/96 

FIELD: video encoding.

SUBSTANCE: gradients of a subset of samples in an area of 88 are determined to obtain 44 block classification of the first block of the coding tree in the first filtering process, with 44 block located inside the first block of the coding tree and inside 88 area. Conversion is performed based on the specified definition. In this case, a set of filtering coefficients is determined for reading 44 block based on the specified gradients. A set of compression values is defined for the specified sample. A filter is applied to the specified sample based on a set of filter coefficients and a set of compression values. In the case where it is not allowed to use samples crossing the video block boundary in the first filtering process, the leftmost two columns of samples in 88 area are filled when in 44 block, located on the left border of the video block, there is a countdown; or the top two lines of readings in 88 area are filled if in block 44, located on the upper boundary of the video block, there is a countdown.

EFFECT: increased efficiency of video coding.

14 cl, 43 dwg