ALEXANDRIA, Va., Feb. 11 -- United States Patent no. 12,549,761, issued on Feb. 10, was assigned to Ofinno LLC (Reston, Va.).
"Affine transformation for intra block copy" was invented by Kalyan Goswami (Reston, Va.), Esmael Hejazi Dinan (McLean, Va.) and Tae Meon Bae (McLean, Va.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A decoder receives, from a bitstream, an indication of a block vector, a residual of a current block, an indication of an affine transform, and affine transform parameters. The decoder determines, based on the indication of the block vector, a reference block in a same picture as the current block for predicting the current block. The decoder applies, based on the indication of the affi...