ALEXANDRIA, Va., Aug. 12 -- United States Patent no. 12,389,004, issued on Aug. 12, was assigned to Velos Media LLC (Dallas).
"Methods and devices for context set selection" was invented by Tianying Ji (Albany, Calif.), Nguyen Nguyen (Seattle) and Dake He (Waterloo, Canada).
According to the abstract* released by the U.S. Patent & Trademark Office: "Methods of encoding and decoding for video data are described for encoding or decoding multi-level significance maps. Distinct context sets may be used for encoding the significant-coefficient flags in different regions of the transform unit. In a fixed case, the regions are defined by coefficient group borders. In one example, the upper-left coefficient group is a first region and the other c...