US 11,943,470 B2
Method and apparatus for inter prediction in video coding system
Jaeho Lee, Seoul (KR)
Assigned to LG ELECTRONICS INC., Seoul (KR)
Filed by LG ELECTRONICS INC., Seoul (KR)
Filed on Feb. 27, 2023, as Appl. No. 18/114,791.
Application 18/114,791 is a continuation of application No. 17/378,593, filed on Jul. 16, 2021, granted, now 11,622,125.
Application 17/378,593 is a continuation of application No. 17/075,494, filed on Oct. 20, 2020, granted, now 11,109,058, issued on Aug. 31, 2021.
Application 17/075,494 is a continuation of application No. PCT/KR2019/004957, filed on Apr. 24, 2019.
Claims priority of provisional application 62/662,175, filed on Apr. 24, 2018.
Prior Publication US 2023/0224490 A1, Jul. 13, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H04N 19/52 (2014.01); H04N 19/105 (2014.01); H04N 19/176 (2014.01); H04N 19/573 (2014.01); H04N 19/70 (2014.01)
CPC H04N 19/52 (2014.11) [H04N 19/105 (2014.11); H04N 19/176 (2014.11); H04N 19/573 (2014.11); H04N 19/70 (2014.11)] 3 Claims
OG exemplary drawing
 
1. A decoding apparatus for image decoding, the decoding apparatus comprising:
a memory; and
at least one processor connected to the memory, the at least one processor configured to:
obtain image information including motion vector difference (MVD) information from a bitstream;
derive affine motion vector predictor (MVP) candidate list of a current block based on neighboring blocks of the current block;
derive control point motion vector predictors (CPMVPs) of the current block based on the affine MVP candidate list of the current block;
derive control point motion vector differences (CPMVDs) of the current block based on the MVD information;
derive control point motion vectors (CPMVs) of the current block based on the CPMVPs and the CPMVDs; and
generate prediction samples for the current block based on the CPMVs of the current block,
wherein the affine MVP candidate list comprises inherited affine candidates,
wherein the inherited affine candidates are derived based on candidate blocks coded by an affine prediction among spatial neighboring blocks of the current block,
wherein the inherited affine candidates comprises a first inherited affine candidate and a second inherited affine candidate,
wherein the first inherited affine candidate is derived from a first block group comprising a bottom-left corner neighboring block and a left neighboring block of the current block, and
wherein the second inherited affine candidate is derived from a second block group comprising a top-right corner neighboring block, a top neighboring block of the current block, and a top-left corner neighboring block.