Patent ID: 11924415
Assignee: TENCENT AMERICA LLC
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 10:
11. An apparatus for video coding, comprising processing circuitry configured to:
buffer first boundary pixel values of a subset of first reconstructed samples at a first node along a loop filter chain, a non linear mapping based filter and a constrained directional enhancement filter being applied to the first boundary pixel values, the non linear mapping based filter and the constrained directional enhancement filter being applied in the loop filter chain before a loop restoration filter, the first boundary pixel values being values of pixels at a frame boundary;
buffer second boundary pixel values of a subset of second reconstructed samples at a second node along the loop filter chain, the second reconstructed samples at the second node being generated after at least one of the non linear mapping based filter or the constrained directional enhancement filter is applied to the loop filter chain, and the second boundary pixel values being values of the pixels at the frame boundary; and
apply the loop restoration filter on to-be filtered reconstructed samples based on the buffered first boundary pixel values of the subset of the first reconstructed samples and the buffered second boundary pixel values of the subset of the second reconstructed samples.