US 12,273,549 B2
Method and device for coding image/video on basis of prediction weighted table
Seethal Paluri, Seoul (KR); Hendry Hendry, Seoul (KR); Jie Zhao, Seoul (KR); and Seunghwan Kim, Seoul (KR)
Assigned to LG Electronics Inc., Seoul (KR)
Filed by LG Electronics Inc., Seoul (KR)
Filed on Dec. 20, 2023, as Appl. No. 18/391,365.
Application 18/391,365 is a continuation of application No. 17/857,285, filed on Jul. 5, 2022, granted, now 11,895,314.
Application 17/857,285 is a continuation of application No. PCT/KR2021/000466, filed on Jan. 13, 2021.
Claims priority of provisional application 62/960,682, filed on Jan. 13, 2020.
Prior Publication US 2024/0129510 A1, Apr. 18, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H04N 19/46 (2014.01); H04N 19/137 (2014.01); H04N 19/174 (2014.01); H04N 19/70 (2014.01)
CPC H04N 19/46 (2014.11) [H04N 19/137 (2014.11); H04N 19/174 (2014.11); H04N 19/70 (2014.11)] 2 Claims
OG exemplary drawing
 
1. A decoding apparatus for an image decoding, the decoding apparatus comprising:
a memory; and
at least one processor connected to the memory, the at least one processor configured to:
parse a first flag related to whether weighted prediction is applied to P slices referring to a picture parameter set, from the picture parameter set of a bitstream;
parse a second flag related to whether the weighted prediction is applied to B slices referring to the picture parameter set, from the picture parameter set;
parse a third flag related to whether information on the weighted prediction is present in a picture header of the bitstream or in a slice header of the bitstream, from the picture parameter set, based on the first flag or the second flag;
parse a prediction weighted table syntax from the picture header or the slice header;
generate prediction samples for a current block by performing the weighted prediction on the current block in a current picture based on syntax elements in the prediction weighted table syntax; and
generate reconstructed samples based on the prediction samples,
wherein the prediction weighted table syntax is parsed from the picture header based on the third flag,
wherein whether L0 number information for the weighted prediction is parsed from the prediction weighted table syntax is determined based on the third flag,
wherein whether L1 number information for the weighted prediction is parsed from the prediction weighted table syntax is determined based on the third flag,
wherein the L0 number information represents a number of weighted reference pictures in a reference picture list 0, and
wherein the L1 number information represents a number of weighted reference pictures in a reference picture list 1.