Patent ID: 11909965
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 pixels, wherein the reconstructed pixels comprise a current block;
determining one or more clipping values for the ALF processing, wherein a target clipping value is always signaled at an encoder side or parsed at a decoder side even if the target clipping value is zero;
deriving a current ALF output for the current block, wherein the current ALF output comprises a weighted sum of clipped differences of original differences and each of the original differences is calculated between a first reconstructed pixel at a non-center filter location and a center reconstructed pixel at a center filter location, and wherein each of the original differences is clipped according to a corresponding clipping value to form one clipped difference; and
providing filtered-reconstructed pixels, wherein the filtered-reconstructed pixels comprise the current ALF output.