ALEXANDRIA, Va., June 16 -- United States Patent no. 12,307,718, issued on May 20, was assigned to BEIHANG UNIVERSITY (Beijing).

"Cascading expansion method of working space and working visual angle of stereo vision system" was invented by Cai Meng (Beijing) and Xinliang Deng (Beijing).

According to the abstract* released by the U.S. Patent & Trademark Office: "A cascading expansion method of working space and working visual angle of stereo vision system is disclosed. One stereo vision system in the multi stereo vision systems is fixed as the global vision system, and the other stereo vision systems can move the position and adjust the visual angle according to the needs during the working process, so as to effectively expand the working ...