ALEXANDRIA, Va., Nov. 25 -- United States Patent no. 12,482,128, issued on Nov. 25, was assigned to GM CRUISE HOLDINGS LLC (San Francisco).

"Identifying stability of an object based on surface normal vectors" was invented by Zhanping Xu (Sunnyvale, Calif.), Kartheek Chandu (Dublin, Calif.), Glenn D. Sweeney (Sebastopol, Calif.) and Robert Vets (Seattle).

According to the abstract* released by the U.S. Patent & Trademark Office: "Aspects of the subject technology relate to systems, methods, and computer-readable media for identifying roll, pitch, and azimuth angles for an object based on surface normal vectors. Image data tracking a surface as an object moves relative to the surface can be accessed. A reference normal vector of the surface...