ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,423,905, issued on Sept. 23, was assigned to NVIDIA Corp. (Santa Clara, Calif.).

"Denoising dynamically ray-traced scenes using temporal and spatial variances of historical pixel values" was invented by Timofey Cheblokov (San Jose, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "In various examples, systems and methods are disclosed relating to historical reset. One method includes determining at least one history buffer for a frame, determining, in a spatial domain, a spatial component of the accumulated pixel value at the pixel location based on a first spatial moment and a second spatial moment, determining, in a temporal domain, a temporal co...