ALEXANDRIA, Va., July 23 -- United States Patent no. 12,368,887, issued on July 22, was assigned to TENCENT AMERICA LLC (Palo Alto, Calif.).
"Secondary transform application for various block sizes" was invented by Xin Zhao (San Jose, Calif.), Xiang Li (Saratoga, Calif.) and Shan Liu (San Jose, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "Aspects of the disclosure provide methods, apparatuses, and non-transitory computer-readable storage mediums for video encoding/decoding. In a method, prediction information for a current block is decoded. The prediction information indicates a first intra prediction mode and a secondary transform index, based on which a secondary transform core is determined. A fi...