US 12,284,394 B2
Method of decoding video data and device
Sachin G. Deshpande, Vancouver, WA (US)
Assigned to SHARP KABUSHIKI KAISHA, Sakai (JP)
Filed by SHARP KABUSHIKI KAISHA, Sakai (JP)
Filed on Apr. 30, 2024, as Appl. No. 18/650,993.
Application 18/650,993 is a continuation of application No. 17/776,362, granted, now 12,022,126, previously published as PCT/JP2020/043451, filed on Nov. 20, 2020.
Claims priority of provisional application 62/939,451, filed on Nov. 22, 2019.
Prior Publication US 2024/0283981 A1, Aug. 22, 2024
Int. Cl. H04N 19/00 (2014.01); H04N 19/172 (2014.01); H04N 19/174 (2014.01); H04N 19/70 (2014.01)
CPC H04N 19/70 (2014.11) [H04N 19/172 (2014.11); H04N 19/174 (2014.11)] 2 Claims
OG exemplary drawing
 
1. A method of decoding video data, the method comprising:
receiving a picture parameter set;
parsing a first syntax element, in the picture parameter set, specifying whether a rectangular slice mode is in use for each picture referring to the picture parameter set;
conditionally parsing a second syntax element in the picture parameter set in a case that the first syntax element specifies the rectangular slice mode is in use, wherein the second syntax element specifies whether each subpicture consists of only one rectangular slice, or each subpicture consists of a set of one or more rectangular slices;
conditionally parsing a third syntax element in the picture parameter set in a case that the first syntax element specifies rectangular slice mode is in use and the second syntax element specifies that each subpicture consists of the set of one or more rectangular slices, wherein the third syntax element has a value which plus 1 specifies a number of rectangular slices in each picture referring to the picture parameter set;
conditionally parsing a fourth syntax element in the picture parameter set based on a value of the third syntax element being greater than a threshold value, wherein the fourth syntax element specifies whether or not index delta value syntax elements are present in the picture parameter set; and
for each of the number of the rectangular slices specified by the third syntax element:
conditionally parsing one of the index delta value syntax elements associated with an index value in a case that the fourth syntax element indicates that the index delta value syntax elements are present and the index value is less than the value of the third syntax element.