US 12,231,690 B2
Encoder, decoder and corresponding methods for simplifying signaling picture header
Biao Wang, Munich (DE); Semih Esenlik, Munich (DE); Han Gao, Munich (DE); Anand Meher Kotra, 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 Apr. 8, 2022, as Appl. No. 17/716,349.
Application 17/716,349 is a continuation of application No. PCT/CN2020/120110, filed on Oct. 10, 2020.
Claims priority of provisional application 62/913,730, filed on Oct. 10, 2019.
Prior Publication US 2022/0256196 A1, Aug. 11, 2022
Int. Cl. H04N 19/70 (2014.01); H04N 19/172 (2014.01); H04N 19/503 (2014.01)
CPC H04N 19/70 (2014.11) [H04N 19/172 (2014.11); H04N 19/503 (2014.11)] 20 Claims
OG exemplary drawing
 
1. A method of coding implemented by a decoding device, comprising:
parsing a bitstream to obtain a first flag from a picture header of the bitstream, wherein the first flag indicates whether a current picture is I picture; and
when the first flag indicates that the current picture is I picture, determining that a syntax element used for inter prediction is not signalled in the picture header and is inferred to be equal to a value of a syntax element for inter prediction in a sequence parameter set (SPS) of the bitstream;
when the first flag indicates that the current picture is P or B picture and a second flag indicates that partition constraint parameters are present in the picture header, obtaining a syntax element used for inter prediction from the picture header; wherein the second flag is a partition constraints override flag.