Patent ID: 11882276
Assignee: HFI INNOVATION INC.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A method for Adaptive Loop Filter (ALF) processing of reconstructed video, the method comprising:
receiving reconstructed data of a current picture having a sub-picture;
deriving filtered-reconstructed data for the current picture by applying the ALF processing, wherein the deriving includes:
determining that the ALF processing to be applied on a target reconstructed sample that is on one side of a vertical sub-picture boundary requires an outside reconstructed sample that is on another side of the vertical sub-picture boundary, samples at the two sides of the vertical sub-picture boundary being uncorrelated, and
in response to the determination that the ALF processing to be applied on the target reconstructed sample that is on one side of the vertical sub-picture boundary requires the outside reconstructed sample that is on the other side of the vertical sub-picture boundary, using a padded sample in place of the outside reconstructed sample for applying the ALF processing on the target reconstructed sample; and

providing the filtered-reconstructed data for the current picture.