	US 12,155,816 B2
	Image encoding/decoding method and device for signaling DPB-related information and PTL-related information, and computer-readable recording medium in which bitstream is stored
Hendry Hendry, Seoul (KR); Seung Hwan Kim, Seoul (KR); Seethal Paluri, Seoul (KR); and Jie Zhao, Seoul (KR)
Assigned to LG ELECTRONICS INC., Seoul (KR)
Appl. No. 17/916,371
Filed by LG ELECTRONICS INC., Seoul (KR)
PCT Filed Mar. 26, 2021, PCT No. PCT/KR2021/003778 § 371(c)(1), (2) Date Sep. 30, 2022, PCT Pub. No. WO2021/201510, PCT Pub. Date Oct. 7, 2021.
Claims priority of provisional application 63/004,488, filed on Apr. 2, 2020.
Prior Publication US 2023/0156180 A1, May 18, 2023
Int. Cl. H04N 19/102 (2014.01); H04N 19/169 (2014.01); H04N 19/70 (2014.01)

CPC H04N 19/102 (2014.11) [H04N 19/1883 (2014.11); H04N 19/70 (2014.11)]

14 Claims

1. An image decoding method performed by an image decoding apparatus, the image decoding method comprising:

obtaining first information for deriving a number of one or more decoded picture buffer (DPB) parameter syntax structures in a video parameter set (VPS);

obtaining the one or more DPB parameter syntax structures from the VPS based on the first information;

obtaining second information on mapping between one or more multi-layer output layer sets (OLSs) and the one or more DPB parameter syntax structures from the VPS based on the first information;

selecting a DPB parameter syntax structure that applies to a current OLS based on the second information; and

processing the current OLS based on the selected DPB parameter syntax structure,

wherein the number of the one or more DPB parameter syntax structures in the VPS is not greater than a number of the one or more multi-layer OLSs.