ALEXANDRIA, Va., July 3 -- United States Patent no. 12,347,138, issued on July 1, was assigned to Beijing Sankuai Online Technology Co. Ltd. (Beijing).

"Visual positioning based on a plurality of image frames" was invented by Hao Shen (Beijing), Qiong Nie (Beijing) and Huaxia Xia (Beijing).

According to the abstract* released by the U.S. Patent & Trademark Office: "A visual positioning method and apparatus are provided. In some embodiments, the method includes: acquiring a video captured by an image sensor; determining visual positioning information respectively corresponding to a plurality of key image frames in the video; determining a capture pose transformation relationship between each of the plurality of key image frames according t...