US 12,238,319 B2
Image encoding/decoding method and device, and recording medium storing bitstream
Woong Lim, Daejeon (KR); and Gun Bang, Daejeon (KR)
Assigned to Electronics and Telecommunications Research Institute, Daejeon (KR)
Appl. No. 17/614,497
Filed by Electronics and Telecommunications Research Institute, Daejeon (KR)
PCT Filed Sep. 22, 2020, PCT No. PCT/KR2020/012768
§ 371(c)(1), (2) Date Nov. 26, 2021,
PCT Pub. No. WO2021/060801, PCT Pub. Date Apr. 1, 2021.
Claims priority of application No. 10-2019-0116800 (KR), filed on Sep. 23, 2019; and application No. 10-2019-0118875 (KR), filed on Sep. 26, 2019.
Prior Publication US 2022/0224932 A1, Jul. 14, 2022
Int. Cl. H04N 19/46 (2014.01); H04N 19/169 (2014.01); H04N 19/176 (2014.01); H04N 19/82 (2014.01)
CPC H04N 19/46 (2014.11) [H04N 19/176 (2014.11); H04N 19/1883 (2014.11); H04N 19/82 (2014.11)] 7 Claims
OG exemplary drawing
 
1. An image decoding method comprising:
obtaining sub-picture information from a sequence parameter set (SPS) of a bitstream; and
decoding a current sub-picture based on the sub-picture information,
wherein the sub-picture information includes at least one of a first flag or a second flag,
wherein the first flag indicating whether a sub-picture ID is explicitly signaled,
wherein the second flag indicating whether the sub-picture ID is signaled in the SPS or a picture parameter set (PPS),
wherein, in response to the first flag indicating that the sub-picture ID is not explicitly signaled, the sub-picture ID is not explicitly signaled,
wherein, in response to the first flag indicating that the sub-picture ID is explicitly signaled, the second flag is obtained from the SPS,
wherein, in response to a value of the second flag being 1, the sub-picture ID is signaled from the SPS,
wherein, in response to the value of the second flag being 0, the sub-picture ID is signaled from the PPS, and
wherein the sub-picture information includes a third flag indicating whether sub-pictures included in a current picture have a same size.