ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,425,592, issued on Sept. 23, was assigned to LG Electronics Inc. (Seoul, South Korea).
"Method and device for designing low-frequency non-separable transform" was invented by Moonmo Koo (Seoul, South Korea), Jaehyun Lim (Seoul, South Korea), Seunghwan Kim (Seoul, South Korea) and Jie Zhao (Seoul, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "An image decoding method according to the present document comprises a step of deriving a corrected transform coefficient by applying low-frequency non-separable transform (LFNST) to a transform coefficient, wherein an LFNST set for applying the LFNST may be derived on the basis of an intra-prediction ...