US 12,143,640 B2
Avoidance of redundant signaling in multi-layer video bitstreams
Ye-Kui Wang, San Diego, CA (US)
Assigned to Huawei Technologies Co., Ltd., Shenzhen (CN)
Filed by Huawei Technologies Co., Ltd., Shenzhen (CN)
Filed on Apr. 5, 2022, as Appl. No. 17/713,974.
Application 17/713,974 is a continuation of application No. PCT/US2020/054448, filed on Oct. 6, 2020.
Claims priority of provisional application 62/911,808, filed on Oct. 7, 2019.
Prior Publication US 2022/0232257 A1, Jul. 21, 2022
Int. Cl. H04N 19/70 (2014.01); H04N 19/105 (2014.01); H04N 19/136 (2014.01); H04N 19/159 (2014.01); H04N 19/169 (2014.01); H04N 19/172 (2014.01); H04N 19/174 (2014.01); H04N 19/187 (2014.01); H04N 19/30 (2014.01); H04N 19/423 (2014.01); H04N 19/46 (2014.01); H04N 19/463 (2014.01); H04N 19/50 (2014.01); H04N 19/593 (2014.01)
CPC H04N 19/70 (2014.11) [H04N 19/105 (2014.11); H04N 19/136 (2014.11); H04N 19/159 (2014.11); H04N 19/172 (2014.11); H04N 19/174 (2014.11); H04N 19/187 (2014.11); H04N 19/188 (2014.11); H04N 19/30 (2014.11); H04N 19/423 (2014.11); H04N 19/46 (2014.11); H04N 19/463 (2014.11); H04N 19/50 (2014.11); H04N 19/593 (2014.11)] 24 Claims
OG exemplary drawing
 
1. A method of decoding implemented by a video decoder, comprising:
receiving a video bitstream including a plurality of layers having sublayers and a video parameter set (VPS) including a first flag having a first value, wherein the first flag having the first value specifies that a temporal identifier (ID) of a highest sublayer representation for level information, a temporal identifier (ID) of a highest sublayer representation for decoded picture buffer (DPB) parameters, and a temporal identifier (ID) of a highest sublayer representation for hypothetical decoder refresh (HRD) parameters are not present in the VPS and are inferred to be equal to a maximum number of the sublayers that is present in a layer of the plurality of layers specified by the VPS; and
decoding a picture from one of the plurality of layers based on the level information, the HRD parameters, and the DPB parameters corresponding to the temporal ID of the highest sublayer representation from the VPS to obtain a decoded picture.