US 12,075,034 B2
Multiple adaptive loop filter sets
Nan Hu, San Diego, CA (US); Vadim Seregin, San Diego, CA (US); and Marta Karczewicz, San Diego, CA (US)
Assigned to QUALCOMM Incorporated, San Diego, CA (US)
Filed by QUALCOMM Incorporated, San Diego, CA (US)
Filed on Dec. 18, 2020, as Appl. No. 17/126,671.
Claims priority of provisional application 62/705,992, filed on Jul. 24, 2020.
Prior Publication US 2022/0030232 A1, Jan. 27, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H04N 19/117 (2014.01); H04N 19/103 (2014.01); H04N 19/136 (2014.01); H04N 19/176 (2014.01); H04N 19/70 (2014.01)
CPC H04N 19/117 (2014.11) [H04N 19/103 (2014.11); H04N 19/136 (2014.11); H04N 19/176 (2014.11); H04N 19/70 (2014.11)] 22 Claims
OG exemplary drawing
 
1. A method of decoding video data, the method comprising:
receiving multiple adaptive loop filter sets in an adaptation parameter set associated with the video data;
decoding, for a luma coding tree block of the video data, a filter set index at a coding tree unit level that indicates a particular adaptive loop filter set of the multiple adaptive loop filter sets in the adaptation parameter set to be used for the luma coding tree block, wherein the particular adaptive loop filter set includes a plurality of adaptive loop filters;
decoding, for the luma coding tree block, a filter index that indicates a particular adaptive loop filter from the particular adaptive loop filter set; and
applying the particular adaptive loop filter to the luma coding tree block of the video data.