US 11,706,437 B2
Systems and methods for performing inter prediction in video coding
Kiran Mukesh Misra, Vancouver, WA (US); Frank Bossen, Vancouver, WA (US); and Christopher Andrew Segall, Vancouver, WA (US)
Assigned to SHARP KABUSHIKI KAISHA, Osaka (JP); and FG Innovation Company Limited, New Territories (HK)
Appl. No. 17/416,645
Filed by SHARP KABUSHIKI KAISHA, Sakai (JP); and FG Innovation Company Limited, Tuen Mun (HK)
PCT Filed Dec. 17, 2019, PCT No. PCT/JP2019/049315
§ 371(c)(1), (2) Date Jun. 21, 2021,
PCT Pub. No. WO2020/129950, PCT Pub. Date Jun. 25, 2020.
Claims priority of provisional application 62/784,014, filed on Dec. 21, 2018.
Prior Publication US 2022/0078460 A1, Mar. 10, 2022
Int. Cl. H04N 19/46 (2014.01); H04N 19/105 (2014.01); H04N 19/159 (2014.01); H04N 19/176 (2014.01)
CPC H04N 19/46 (2014.11) [H04N 19/105 (2014.11); H04N 19/159 (2014.11); H04N 19/176 (2014.11)] 7 Claims
OG exemplary drawing
 
1. A method of decoding video data, the method comprising:
decoding a merge subblock flag that specifies whether subblock-based inter prediction parameters for a coding unit are inferred from neighboring blocks and that determines whether a motion vector difference merge flag and a combination flag are to be decoded;
determining a value of the merge subblock flag;
decoding the motion vector difference merge flag after the value of the merge subblock flag is determined as being equal to zero and a value of a motion vector difference flag is determined as being equal to one; and
decoding the combination flag that specifies whether a combined inter-picture merge and intra-picture prediction is applied for the coding unit by using the merge subblock flag and a sequence parameter set (SPS) flag for the combined inter-picture merge and intra-picture prediction,
wherein:
the motion vector difference merge flag specifies that a prediction parameter with a motion vector difference is used, and
the motion vector difference flag specifies whether a merge mode with motion vector difference (MMVD) mode is enabled.