US 11,956,443 B2
Image encoding/decoding method and device for signaling HLS, 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. 17/916,452
Filed by LG ELECTRONICS INC., Seoul (KR)
PCT Filed Mar. 26, 2021, PCT No. PCT/KR2021/003787
§ 371(c)(1), (2) Date Sep. 30, 2022,
PCT Pub. No. WO2021/201515, PCT Pub. Date Oct. 7, 2021.
Claims priority of provisional application 63/004,490, filed on Apr. 2, 2020.
Prior Publication US 2023/0199191 A1, Jun. 22, 2023
Int. Cl. H04N 19/136 (2014.01); H04N 19/103 (2014.01); H04N 19/186 (2014.01); H04N 19/70 (2014.01); H04N 19/82 (2014.01)
CPC H04N 19/136 (2014.11) [H04N 19/103 (2014.11); H04N 19/186 (2014.11); H04N 19/70 (2014.11); H04N 19/82 (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, a first syntax element specifying whether to constrain luma mapping with chroma scaling (LMCS);
obtaining, from the bitstream, a second syntax element specifying whether LMCS for a current video sequence is allowed; and
reconstructing a current picture within the current video sequence based on the second syntax element,
wherein the second syntax element is parsed from the bitstream independently of the first syntax element, and
wherein a value of the second syntax element is determined based on a value of the first syntax element.