US 11,917,141 B2
High-level deblocking filter (DBF), adaptive loop filter (ALF) and sample adaptive offset (SAO) control, and adaptation parameter set (APS) number constraint in video coding
Nan Hu, San Diego, CA (US); Vadim Seregin, San Diego, CA (US); Marta Karczewicz, San Diego, CA (US); and Yong He, San Diego, CA (US)
Assigned to QUALCOMM Incorporated, San Diego, CA (US)
Filed by QUALCOMM Incorporated, San Diego, CA (US)
Filed on May 19, 2021, as Appl. No. 17/303,067.
Claims priority of provisional application 63/028,394, filed on May 21, 2020.
Claims priority of provisional application 63/027,704, filed on May 20, 2020.
Prior Publication US 2021/0368169 A1, Nov. 25, 2021
Int. Cl. H04N 19/117 (2014.01); H04N 19/70 (2014.01); H04N 19/86 (2014.01); H04N 19/80 (2014.01); H04N 19/176 (2014.01)
CPC H04N 19/117 (2014.11) [H04N 19/176 (2014.11); H04N 19/70 (2014.11); H04N 19/80 (2014.11); H04N 19/86 (2014.11)] 18 Claims
OG exemplary drawing
 
1. A method of decoding video data, the method comprising:
decoding, via a first syntax level of a coded video bitstream, a first deblocking filter control syntax element with a value that specifies whether deblocking filter information is present in a second syntax level of the bitstream, the first syntax level comprising a picture parameter set (PPS), and the second syntax level comprising a picture header (PH);
decoding, via the first syntax level of the coded video bitstream, a second deblocking filter control syntax element with a value that specifies whether deblocking override is enabled;
responsive to the first deblocking filter control syntax element specifying that the deblocking filter information is present in the second syntax level of the bitstream and regardless of the value of the second deblocking filter control syntax element, decoding, via the second syntax level, one or more syntax elements that specify deblocking filter information; and
applying, based on the deblocking filter information, a deblocking filter to a block of the video data.