US 11,917,194 B2
Image encoding/decoding method and apparatus based on wrap-around motion compensation, and recording medium storing bitstream
Hendry Hendry, Seoul (KR); Seethal Paluri, 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. 26, 2022, as Appl. No. 17/952,898.
Application 17/952,898 is a continuation of application No. PCT/KR2021/003790, filed on Mar. 26, 2021.
Claims priority of provisional application 63/009,975, filed on Apr. 14, 2020.
Claims priority of provisional application 63/000,473, filed on Mar. 26, 2020.
Prior Publication US 2023/0012751 A1, Jan. 19, 2023
Int. Cl. H04N 19/577 (2014.01); H04N 19/109 (2014.01); H04N 19/139 (2014.01); H04N 19/172 (2014.01); H04N 19/176 (2014.01); H04N 19/52 (2014.01); H04N 19/96 (2014.01)
CPC H04N 19/577 (2014.11) [H04N 19/109 (2014.11); H04N 19/139 (2014.11); H04N 19/172 (2014.11); H04N 19/176 (2014.11); H04N 19/52 (2014.11); H04N 19/96 (2014.11)] 9 Claims
OG exemplary drawing
 
1. An image decoding method performed by an image decoding apparatus, the image decoding method comprising:
obtaining inter prediction information of a current block within a current picture and wraparound information from a bitstream; and
generating a prediction block of the current block based on the inter prediction information and the wraparound information,
wherein the wraparound information comprises a first flag and a second flag, the first flag specifying whether wraparound motion compensation is enabled for a current video sequence including the current picture, and the second flag specifying whether the wraparound motion compensation is enabled for the current picture,
wherein, when the current video sequence includes at least one subpicture being treated as a picture and having a width different from a value being derived based on information on a maximum width of a picture in the current video sequence, the first flag obtained from the bitstream is constrained to have a first value specifying that the wraparound motion compensation is disabled for the current video sequence, and
wherein the second flag has a first value specifying that the wraparound motion compensation is disabled for the current picture when the first flag has the first value.