US 12,120,342 B2
Method and apparatus for processing video signal based on history based motion vector prediction
Jane Zhao, Seoul (KR); and Seunghwan Kim, Seoul (KR)
Assigned to LG ELECTRONICS INC., Seoul (KR)
Filed by LG ELECTRONICS INC., Seoul (KR)
Filed on Nov. 7, 2023, as Appl. No. 18/387,809.
Application 18/387,809 is a continuation of application No. 18/127,857, filed on Mar. 29, 2023, granted, now 11,849,075.
Application 18/127,857 is a continuation of application No. 17/941,628, filed on Sep. 9, 2022, granted, now 11,653,022, issued on May 16, 2023.
Application 17/941,628 is a continuation of application No. 16/896,532, filed on Jun. 9, 2020, granted, now 11,477,478, issued on Oct. 18, 2022.
Application 16/896,532 is a continuation of application No. PCT/KR2019/017607, filed on Dec. 12, 2019.
Claims priority of provisional application 62/778,835, filed on Dec. 12, 2018.
Prior Publication US 2024/0171771 A1, May 23, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H04N 19/56 (2014.01); H04N 19/176 (2014.01); H04N 19/513 (2014.01)
CPC H04N 19/56 (2014.11) [H04N 19/176 (2014.11); H04N 19/513 (2014.11)] 9 Claims
OG exemplary drawing
 
1. An image decoding method performed by an image decoding apparatus, the image decoding method comprising:
configuring a merge candidate list based on a spatial neighboring block and a temporal neighboring block of a current block;
adding a history-based motion vector predictor (HMVP) candidate included in an HMVP candidate list storing HMVP candidates of the current block to the merge candidate list;
generating a prediction sample of the current block based on motion information of a merge candidate within the merge candidate list, the merge candidate being indicated by a merge index,
wherein the HMVP candidate is added to the merge candidate list, based on a result of comparing motion information of the HMVP candidate with motion information of predetermined spatial merge candidates among merge candidates within the merge candidate list,
the predetermined spatial merge candidates include only a left neighboring spatial merge candidate and a top neighboring spatial merge candidate of the current block, and the left and top neighboring spatial merge candidates are the first two merge candidates in the merge candidate list, and
wherein a maximum size of the HMVP candidate list is smaller than a maximum size of the merge candidate list.