US 12,238,338 B2
Decoding method and a decoder for subpicture syntax elements signalling
Biao Wang, Munich (DE); Semih Esenlik, Munich (DE); Anand Meher Kotra, Munich (DE); Han Gao, Munich (DE); and Elena Alexandrovna Alshina, Munich (DE)
Assigned to HUAWEI TECHNOLOGIES CO., LTD., Guangdong (CN)
Filed by HUAWEI TECHNOLOGIES CO., LTD., Guangdong (CN)
Filed on Mar. 18, 2022, as Appl. No. 17/698,824.
Application 17/698,824 is a continuation of application No. PCT/CN2021/074104, filed on Jan. 28, 2021.
Claims priority of application No. PCT/EP2020/053465 (WO), filed on Feb. 11, 2020.
Prior Publication US 2022/0224944 A1, Jul. 14, 2022
Int. Cl. H04N 19/70 (2014.01); H04N 19/172 (2014.01); H04N 19/82 (2014.01)
CPC H04N 19/70 (2014.11) [H04N 19/172 (2014.11); H04N 19/82 (2014.11)] 15 Claims
OG exemplary drawing
 
1. A method of coding implemented by a decoding device, the method comprising:
obtaining a value of a syntax element sps_num_subpics_minus1 by parsing a video bitstream, wherein the value of the syntax element sps_num_subpics_minus1 plus 1 indicates a number of subpictures in each picture in a coded layer video sequence; and
in response to the value of the syntax element sps_num_subpics_minus1 being greater than 0, obtaining a value of a syntax element sps_independent_subpics_flag from the video bitstream, wherein the value of the syntax element sps_independent_subpics_flag is used to indicate whether loop filtering across subpicture boundaries in the coded layer video sequence is performed;
in response to the value of the syntax element sps_num_subpics_minus1 being equal to 0, setting the value of the syntax element sps_independent_subpics_flag equal to a default value.