US 12,457,323 B2
Encoder, decoder and corresponding methods for improved compression ratios
Biao Wang, Shenzhen (CN); Semih Esenlik, Munich (DE); Elena Alexandrovna Alshina, Munich (DE); Anand Meher Kotra, Munich (DE); and Han Gao, Shenzhen (CN)
Assigned to HUAWEI TECHNOLOGIES CO., LTD., Shenzhen (CN)
Filed by HUAWEI TECHNOLOGIES CO., LTD., Guangdong (CN)
Filed on Sep. 16, 2022, as Appl. No. 17/946,929.
Application 17/946,929 is a continuation of application No. PCT/CN2021/081290, filed on Mar. 17, 2021.
Prior Publication US 2023/0082783 A1, Mar. 16, 2023
Int. Cl. H04N 19/105 (2014.01); H04N 19/169 (2014.01); H04N 19/174 (2014.01)
CPC H04N 19/105 (2014.11) [H04N 19/174 (2014.11); H04N 19/188 (2014.11)] 20 Claims
OG exemplary drawing
 
1. A method of decoding a video or picture bitstream by a decoding device, comprising:
determining that a current video coding layer is the only one layer in the bitstream when video parameter set (VPS) is not present in the bitstream; and
when determining that the current video coding layer is the only one layer in the bitstream, using a layer identifier of a network abstraction layer (NAL) unit of the current video coding layer as an identifier of the current video coding layer, and the identifier of the current video coding layer is presented by vps_layer_id.