US 12,413,764 B2
Systems and methods for signaling picture information in a slice header in video coding
Sachin G. Deshpande, Vancouver, WA (US); Jonatan Samuelsson, Vancouver, WA (US); and Frank Bossen, Vancouver, WA (US)
Assigned to SHARP KABUSHIKI KAISHA, Sakai (JP)
Appl. No. 17/795,823
Filed by SHARP KABUSHIKI KAISHA, Sakai (JP)
PCT Filed Jan. 25, 2021, PCT No. PCT/JP2021/002361
§ 371(c)(1), (2) Date Jul. 27, 2022,
PCT Pub. No. WO2021/153475, PCT Pub. Date Aug. 5, 2021.
Claims priority of provisional application 63/009,793, filed on Apr. 14, 2020.
Claims priority of provisional application 62/992,778, filed on Mar. 20, 2020.
Claims priority of provisional application 62/991,530, filed on Mar. 18, 2020.
Claims priority of provisional application 62/966,916, filed on Jan. 28, 2020.
Prior Publication US 2023/0085937 A1, Mar. 23, 2023
Int. Cl. H04N 19/463 (2014.01); H04N 19/157 (2014.01); H04N 19/169 (2014.01); H04N 19/174 (2014.01); H04N 19/186 (2014.01); H04N 19/70 (2014.01)
CPC H04N 19/463 (2014.11) [H04N 19/157 (2014.11); H04N 19/174 (2014.11); H04N 19/186 (2014.11); H04N 19/188 (2014.11); H04N 19/70 (2014.11)] 4 Claims
OG exemplary drawing
 
1. A method of decoding video data, the method comprising:
decoding an enabled flag syntax element, wherein the enabled flag syntax element specifies whether a luma mapping with chroma scaling is enabled for all slices associated with a picture header syntax structure;
receiving a slice header;
decoding a first flag syntax element in the slice header, wherein the first flag syntax element specifies whether the picture header syntax structure is present in the slice header;
determining whether a condition is satisfied, the condition including: (i) the enabled flag syntax element has a value of 1, which indicates that the luma mapping with chroma scaling is enabled and (ii) the first flag syntax element has a value of 0, which indicates that the picture header syntax structure is not present in the slice header; and
decoding a second flag syntax element in the slice header only if the condition is satisfied, wherein the second flag syntax element specifies a luma mapping is used for a current slice or a luma mapping with chroma scaling is not used for the current slice.