US 12,348,751 B2
Method and apparatus for signaling image information
Hendry Hendry, Seoul (KR); Seethal Paluri, Seoul (KR); and Seunghwan Kim, Seoul (KR)
Assigned to LG ELECTRONICS INC., Seoul (KR)
Appl. No. 17/779,914
Filed by LG ELECTRONICS INC., Seoul (KR)
PCT Filed Nov. 26, 2020, PCT No. PCT/KR2020/016961
§ 371(c)(1), (2) Date May 25, 2022,
PCT Pub. No. WO2021/107637, PCT Pub. Date Jun. 3, 2021.
Claims priority of provisional application 62/941,664, filed on Nov. 27, 2019.
Prior Publication US 2023/0020666 A1, Jan. 19, 2023
Int. Cl. H04N 19/46 (2014.01); H04N 19/119 (2014.01); H04N 19/172 (2014.01); H04N 19/174 (2014.01)
CPC H04N 19/46 (2014.11) [H04N 19/119 (2014.11); H04N 19/172 (2014.11); H04N 19/174 (2014.11)] 3 Claims
OG exemplary drawing
 
1. An image decoding method performed by a decoding apparatus, the method comprising:
receiving a bitstream including image information, wherein the image information includes partitioning information on a current picture;
deriving at least one slice included in the current picture based on the partitioning information; and
reconstructing the current picture based on the at least one slice,
wherein the image information includes a first flag related to the presence of subpicture information and a second flag related to whether each subpicture includes only one slice,
wherein a value of the first flag is determined to be equal to 0 and a value of the second flag is determined to equal to 1 at the same time for the current picture,
wherein based on the value of the first flag being equal to 0 and the value of the second flag being equal to 1, a number of slices included in the current picture is equal to a number of subpictures present in the current picture,
wherein the first flag is included in a Sequence Parameter Set (SPS) of the image information, and
wherein a number of CTU in a slice is determined based on the value of the second flag.