US 12,407,861 B2
Signaling of picture header in video coding
Fnu Hendry, San Diego, CA (US); Ye-Kui Wang, San Diego, CA (US); and Jianle Chen, San Diego, CA (US)
Assigned to Huawei Technologies Co., Ltd., Shenzhen (CN)
Filed by Huawei Technologies Co., Ltd., Guangdong (CN)
Filed on Mar. 23, 2022, as Appl. No. 17/702,418.
Application 17/702,418 is a continuation of application No. PCT/US2020/045038, filed on Aug. 5, 2020.
Claims priority of provisional application 62/905,150, filed on Sep. 24, 2019.
Prior Publication US 2022/0224945 A1, Jul. 14, 2022
Int. Cl. H04N 19/70 (2014.01); H04N 19/169 (2014.01); H04N 19/172 (2014.01); H04N 19/174 (2014.01); H04N 19/44 (2014.01); H04N 19/46 (2014.01)
CPC H04N 19/70 (2014.11) [H04N 19/172 (2014.11); H04N 19/174 (2014.11); H04N 19/188 (2014.11); H04N 19/44 (2014.11); H04N 19/46 (2014.11)] 19 Claims
OG exemplary drawing
 
1. A method of decoding implemented by a video decoder, comprising:
receiving a video bitstream including a picture unit (PU), the PU including a picture header (PH) network abstraction layer (NAL) unit preceding a first video coding layer (VCL) NAL unit, wherein the first VCL NAL unit includes a slice of a coded picture, wherein the PH NAL unit is a non-VCL NAL unit, and wherein a value of a temporal identifier (TemporalId) for non-VCL NAL units is constrained as follows:
when a NAL unit type (nal_unit_type) is equal to dependency parameter set NAL unit type (DPS_NUT), video parameter set NAL unit type (VPS_NUT), or sequence parameter set NAL unit type (SPS_NUT), the temporal identifier for the non-VCL NAL units is equal to 0 and a temporal identifier of the PU containing the NAL unit shall be equal to 0, and
when the nal_unit type is equal to PH NAL unit type (PH_NUT), the temporal identifier for the non-VCL NAL units shall be equal to the temporal identifier of the PU containing the NAL unit; and
decoding the coded picture from the PU to obtain a decoded picture.