ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,423,912, issued on Sept. 23, was assigned to BEIJING BAIDU NETCOM SCIENCE TECHNOLOGY Co. LTD. (Beijing).
"Construction of three-dimensional road network map" was invented by Junjun Zhang (Beijing).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method for constructing a three-dimensional road network map is disclosed. The method includes: extracting a two-dimensional road based on a satellite remote sensing image; skeletonizing the two-dimensional road to obtain a two-dimensional road network map; and determining a height of each point in the two-dimensional road network map based on an elevation of three-dimensional point cloud data, to obtain the thr...