US 12,137,240 B2
Inter prediction mode-based image processing method and apparatus therefor
Jaehyun Lim, Seoul (KR); Naeri Park, Seoul (KR); Jungdong Seo, Seoul (KR); and Junghak Nam, Seoul (KR)
Assigned to LG Electronics Inc., Seoul (KR)
Filed by LG ELECTRONICS INC., Seoul (KR)
Filed on Jun. 28, 2023, as Appl. No. 18/215,656.
Application 18/215,656 is a continuation of application No. 17/831,288, filed on Jun. 2, 2022, granted, now 11,729,411.
Application 17/831,288 is a continuation of application No. 17/010,474, filed on Sep. 2, 2020, granted, now 11,368,707, issued on Jun. 21, 2022.
Application 17/010,474 is a continuation of application No. 15/754,720, granted, now 10,798,400, issued on Oct. 6, 2020, previously published as PCT/KR2016/002037, filed on Feb. 29, 2016.
Claims priority of provisional application 62/213,627, filed on Sep. 3, 2015.
Claims priority of provisional application 62/208,830, filed on Aug. 24, 2015.
Prior Publication US 2023/0345033 A1, Oct. 26, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H04N 19/51 (2014.01); H04N 19/176 (2014.01); H04N 19/513 (2014.01); H04N 19/523 (2014.01); H04N 19/53 (2014.01); H04N 19/70 (2014.01)
CPC H04N 19/51 (2014.11) [H04N 19/176 (2014.11); H04N 19/513 (2014.11); H04N 19/523 (2014.11); H04N 19/53 (2014.11); H04N 19/70 (2014.11)] 14 Claims
OG exemplary drawing
 
1. A method of decoding a video signal, the method comprising:
obtaining residual samples of a current block;
deriving a motion vector predictor (MVP) based on motion information of a neighbor block of the current block;
obtaining a motion vector difference (MVD) of the current block;
obtaining a flag related to a resolution of the MVD,
determining whether motion vector scale adaptation for the current block is applied based on the flag, wherein a value 0 of the flag specifies that the resolution of the MVD is set to ¼ pel-scale;
rounding the MVP based on the flag;
modifying the MVD to set the resolution of the MVD to the ¼ pel-scale based on the flag;
obtaining a motion vector (MV) of the current block based on the modified MVD and the rounded MVP;
generating prediction samples of the current block based on the MV; and
generating reconstructed samples of the current block based on the prediction samples and the residual samples.