US 12,348,752 B2
Image or video coding on basis of information related to picture output
Hendry Hendry, Seoul (KR); Junghak Nam, Seoul (KR); and Hyeongmoon Jang, Seoul (KR)
Assigned to LG ELECTRONICS INC., Seoul (KR)
Appl. No. 17/922,718
Filed by LG ELECTRONICS INC., Seoul (KR)
PCT Filed May 17, 2021, PCT No. PCT/KR2021/006157
§ 371(c)(1), (2) Date Nov. 1, 2022,
PCT Pub. No. WO2021/235802, PCT Pub. Date Nov. 25, 2021.
Claims priority of provisional application 63/028,586, filed on May 22, 2020.
Claims priority of provisional application 63/026,704, filed on May 18, 2020.
Prior Publication US 2023/0171419 A1, Jun. 1, 2023
Int. Cl. H04N 19/46 (2014.01); H04N 19/172 (2014.01); H04N 19/174 (2014.01); H04N 19/70 (2014.01)
CPC H04N 19/46 (2014.11) [H04N 19/172 (2014.11); H04N 19/174 (2014.11); H04N 19/70 (2014.11)] 16 Claims
OG exemplary drawing
 
1. An image decoding method performed by a decoding apparatus, the method comprising:
decoding slices included in a current picture;
deriving a picture output flag for the current picture, based on all of the slices included in the current picture having been decoded; and
determining output for the current picture based on the picture output flag,
wherein the picture output flag has a value related to whether the current picture is output,
wherein based on a value of the picture output flag being 0, the current picture is marked as “not needed for output”,
wherein based on the value of the picture output flag being 1, the current picture is marked as “needed for output”, and
wherein based on a first condition that a value of a syntax element related to video parameter set (VPS) ID is greater than 0 and a current layer is not an output layer, the value of the picture output flag is derived as 0.