US 12,289,463 B2
Image encoding/decoding method and device based on hybrid NAL unit type, and recording medium for storing bitstream
Hendry Hendry, Seoul (KR); and Seung Hwan Kim, Seoul (KR)
Assigned to LG ELECTRONICS INC., Seoul (KR)
Filed by LG ELECTRONICS INC., Seoul (KR)
Filed on Sep. 21, 2023, as Appl. No. 18/371,232.
Application 18/371,232 is a continuation of application No. 17/951,581, filed on Sep. 23, 2022, granted, now 11,818,380.
Application 17/951,581 is a continuation of application No. PCT/KR2021/003560, filed on Mar. 23, 2021.
Claims priority of provisional application 62/993,668, filed on Mar. 23, 2020.
Prior Publication US 2024/0098291 A1, Mar. 21, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H04N 19/46 (2014.01); H04N 19/169 (2014.01); H04N 19/174 (2014.01)
CPC H04N 19/46 (2014.11) [H04N 19/174 (2014.11); H04N 19/188 (2014.11)] 3 Claims
OG exemplary drawing
 
1. An image decoding method performed by an image decoding apparatus, the image decoding method comprising:
obtaining, from a bitstream, network abstraction layer (NAL) unit type information of at least one NAL unit including coded image data of a current picture;
determining a NAL unit type of each of a plurality of slices within the current picture based on the obtained NAL unit type information; and
decoding the plurality of slices based on the determined NAL unit type,
wherein the current picture is treated as a random access skipped leading (RASL) picture, based on that at least one slice among the plurality of slices has a NAL unit type equal to RASL_NUT and other slices among the plurality of slices all have a NAL unit type equal to RADL_NUT,
wherein the current picture treated as the RASL picture is referred to by a random access decodable leading (RADL) picture, based on that at least one of the plurality of slices has a NAL unit type equal to the RADL_NUT rather than the RASL_NUT, and
wherein the current picture treated as the RASL picture includes two or more subpictures, and at least one of the subpictures includes one or more slices having a NAL unit type equal to the RADL_NUT.