ALEXANDRIA, Va., June 16 -- United States Patent no. 12,307,696, issued on May 20, was assigned to Hangzhou Chengguang Medical Technology Co. Ltd. (Hangzhou, China).

"Structured light three-dimensional measurement method based on joint multi-frequency heterodyne and time-gated overlapping coding strategy" was invented by Mengyu Jia (Zhejiang, China) and Boshuai Sun (Zhejiang, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed is a structured light three-dimensional measurement method based on joint multi-frequency heterodyne and time-gated overlapping coding strategy. Specifically, fringe images modulated by a target surface are firstly collected and processed to obtain corresponding wrapped phas...