DEBLOCKING FILTER FOR VIDEO ENCODING AND PROCESSING Russian patent published in 2023 - IPC H04N19/117 H04N19/86 

FIELD: video encoding and decoding.

SUBSTANCE: video decoder is proposed that is configured to receive the first reconstructed block of video data that includes the first discrete sample with the first value; deblocking filtering is applied to the first reconstructed block to create a deblocked filtered block; the first cut-off value is determined for the first discrete sample based on location of the first discrete sample relative to the boundary of the reconstructed block and based on the size of the reconstructed block; the first clipping value is compared with the amount of change of the first discrete sample due to deblocking filtering; in response to the change value of the first discrete sample due to deblocking filtering greater than the first clip value, change the first value using the first clip value to determine the first filtered value for the first sample, and output the deblocked filtered video data block with the first sample having the first filtered value.

EFFECT: reduction of blocking artifacts along the edges of blocks, which arise as a result of the video data recovery process.

44 cl, 11 dwg, 1 tbl