US 11,877,012 B2
Systems and methods for deriving a motion vector prediction in video coding
Sachin G. Deshpande, Vancouver, WA (US)
Assigned to SHARP KABUSHIKI KAISHA, Sakai (JP)
Filed by Sharp Kabushiki Kaisha, Sakai (JP)
Filed on Aug. 3, 2022, as Appl. No. 17/880,367.
Application 17/880,367 is a continuation of application No. 17/276,621, granted, now 11,463,736, previously published as PCT/JP2019/036315, filed on Sep. 17, 2019.
Claims priority of provisional application 62/739,263, filed on Sep. 30, 2018.
Claims priority of provisional application 62/737,049, filed on Sep. 26, 2018.
Claims priority of provisional application 62/735,093, filed on Sep. 22, 2018.
Claims priority of provisional application 62/734,995, filed on Sep. 21, 2018.
Prior Publication US 2022/0385947 A1, Dec. 1, 2022
Int. Cl. H04N 19/70 (2014.01); H04N 19/105 (2014.01); H04N 19/172 (2014.01); H04N 19/174 (2014.01)
CPC H04N 19/70 (2014.11) [H04N 19/105 (2014.11); H04N 19/172 (2014.11); H04N 19/174 (2014.11)] 3 Claims
OG exemplary drawing
 
1. A method for determining a reference index for a reference picture list, the method comprising:
decoding a reference picture list structure in a sequence parameter set or a slice header;
decoding a reference index active override flag in the slice header, based on a slice type being a P slice type or a B slice type, wherein the reference index active override flag specifies that a first number of reference index active syntax element is present for a P slice and a B slice or a second number of reference index active syntax element is present for a B slice; and
decoding the second number of reference index active syntax element in the slice header, in a case that a number of entries in the reference picture list structure is greater than 1,
wherein a value of the first number of reference index active syntax element is inferred to be equal to a first value, in a case that (i) a slice type of a current slice is the B slice type, (ii) a value of the reference index active override flag is equal to a second value, and (iii) the first number of reference index active syntax element is not present.