ALEXANDRIA, Va., July 15 -- United States Patent no. 12,664,646, issued on June 23, was assigned to Nant Holdings IP LLC (El Segundo, Calif.).

"Image-based circular plot recognition and interpretation" was invented by Carla W. Balch (Memphis, Tenn.) and Nicholas J. Witchey (Laguna Hills, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A device includes software instructions for a circular plot analysis agent and at least one circular plot definition. The circular plot analysis agent obtains a digital image of a circular plot, detects a perimeter of the circular plot within the digital image, detects a plurality of edges within the perimeter, identifies a set of endpoints on the perimeter as a function ...