US 11,956,463 B2
Methods for performing wrap-around motion compensation
Jie Chen, Beijing (CN); Yan Ye, San Diego, CA (US); Ru-Ling Liao, Beijing (CN); and Jiancong Luo, Skillman, NJ (US)
Assigned to Alibaba Group Holding Limited, Grand Cayman (KY)
Filed by ALIBABA GROUP HOLDING LIMITED, Grand Cayman (KY)
Filed on Dec. 16, 2022, as Appl. No. 18/067,166.
Application 18/067,166 is a continuation of application No. 17/124,831, filed on Dec. 17, 2020, granted, now 11,711,537.
Claims priority of provisional application 62/949,396, filed on Dec. 17, 2019.
Prior Publication US 2023/0123069 A1, Apr. 20, 2023
Int. Cl. H04N 19/513 (2014.01); H04N 19/176 (2014.01); H04N 19/186 (2014.01); H04N 19/46 (2014.01)
CPC H04N 19/513 (2014.11) [H04N 19/176 (2014.11); H04N 19/186 (2014.11); H04N 19/46 (2014.11)] 20 Claims
OG exemplary drawing
 
1. A method for performing motion compensation, performed by a decoder and comprising:
receiving a first wrap-around motion compensation flag associated with one or more pictures and indicating whether horizontal wrap-around motion compensation is enabled for the one or more pictures; and
in response to the horizontal wrap-around motion compensation being enabled for the one or more pictures, receiving a parameter associated with a wrap-around motion compensation offset, the parameter associated with the wrap-around motion compensation offset being associated with the one or more pictures, wherein a value of the parameter associated with the wrap-around motion compensation offset is less than or equal to a difference minus 2, and the difference is obtained by a quotient of a picture width in luma samples divided by a minimum luma coding block size minus a quotient of a luma coding tree block size divided by the minimum luma coding block size;
wherein the wrap-around motion compensation flag and the parameter associated with the wrap-around motion compensation offset are signaled in a picture parameter set.