US 12,003,757 B2
Video signal processing method and device for processing motion vector difference information for inter prediction in video signal
Mehdi Salehifar, Seoul (KR); and Seunghwan Kim, Seoul (KR)
Assigned to LG Electronics Inc., Seoul (KR)
Appl. No. 17/438,276
Filed by LG ELECTRONICS INC., Seoul (KR)
PCT Filed Mar. 10, 2020, PCT No. PCT/KR2020/003320
§ 371(c)(1), (2) Date Sep. 10, 2021,
PCT Pub. No. WO2020/184952, PCT Pub. Date Sep. 17, 2020.
Claims priority of provisional application 62/816,200, filed on Mar. 10, 2019.
Prior Publication US 2022/0159291 A1, May 19, 2022
Int. Cl. H04N 7/12 (2006.01); H04N 19/109 (2014.01); H04N 19/139 (2014.01); H04N 19/176 (2014.01); H04N 19/52 (2014.01)
CPC H04N 19/52 (2014.11) [H04N 19/109 (2014.11); H04N 19/139 (2014.11); H04N 19/176 (2014.11)] 11 Claims
OG exemplary drawing
 
1. A method for decoding motion vector difference (MVD) information for inter prediction in a video signal, the method comprising:
obtaining a first flag indicating whether an MVD for prediction of a current block is greater than a first value;
obtaining a second flag indicating whether the MVD is greater than a second value based on the first flag; and
decoding size information for the MVD based on the second flag,
wherein decoding the size information for the MVD includes:
decoding the size information for the MVD based on a first difference value corresponding to a difference between the second value and the first value based on the MVD being equal to or less than the second value, and
obtaining a third flag indicating whether the MVD is greater than a third value based on the MVD being greater than the second value, and
wherein a second difference value corresponding to a difference between the third value and the second value is greater than the first difference value.