	US 12,267,529 B2
	Transform selection for implicit multiple transform selection
Karam Naser, Mouzé (FR); Fabrice LeLeannec, Betton (FR); and Tangi Poirier, Thorigné-Fouillard (FR)
Assigned to InterDigital VC Holdings, Inc., Wilmington, DE (US)
Appl. No. 17/615,499
Filed by InterDigital VC Holdings, Inc., Wilmington, DE (US)
PCT Filed May 28, 2020, PCT No. PCT/US2020/034859 § 371(c)(1), (2) Date Nov. 30, 2021, PCT Pub. No. WO2020/243258, PCT Pub. Date Dec. 3, 2020.
Claims priority of application No. 19305698 (EP), filed on May 31, 2019; and application No. 19290045 (EP), filed on Jun. 21, 2019.
Prior Publication US 2022/0312040 A1, Sep. 29, 2022
Int. Cl. H04N 19/70 (2014.01); H04N 19/103 (2014.01); H04N 19/176 (2014.01); H04N 19/46 (2014.01)

CPC H04N 19/70 (2014.11) [H04N 19/103 (2014.11); H04N 19/176 (2014.11); H04N 19/46 (2014.11)]

16 Claims

1. A method, comprising:

parsing a bitstream for a first syntax element indicating whether a low frequency non-separable transform is used and a second syntax element indicating whether a matrix-based intra prediction is used;

determining that the first syntax element indicates the low frequency non-separable transform is not used and that the second syntax element indicates the matrix-based intra prediction is not used;

selecting at least one transform type based on a size of a transform block responsive to the determining; and

decoding at least one video block based on the selected at least one transform type.