ALEXANDRIA, Va., Nov. 6 -- United States Patent no. 12,462,424, issued on Nov. 4, was assigned to LEICA GEOSYSTEMS AG (Heerbrugg, Switzerland).

"Localization of a surveying instrument" was invented by Zoltan Torok (Berneck, Switzerland), Thomas Morwald (Bregenz, Austria) and Franz Thurnhofer (Horbranz, Austria).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for surveying an environment by a movable surveying instrument with a progressional capturing of 2D-images by at least one camera and applying a visual simultaneous location and mapping algorithm (VSLAM) or a visual inertial simultaneous location and mapping algorithm (VISLAM) with a progressional deriving of a sparse evolving point cloud of at le...