ALEXANDRIA, Va., Feb. 24 -- United States Patent no. 12,558,168, issued on Feb. 24, was assigned to Tencent Technology Co. Ltd. (Shenzhen, China).
"Spatial positioning method, related apparatus, and navigation stick" was invented by Yixun Liu (Shenzhen, China), Chenchen Qin (Shenzhen, China) and Jianhua Yao (Shenzhen, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "This application discloses a spatial positioning method and related apparatus, and a navigation stick. The method includes: determining three-dimensional position coordinates of marker points on an outer surface of the navigation stick included in an image from a camera in a three-dimensional coordinate system corresponding to the navigation ...