ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,423,840, issued on Sept. 23, was assigned to DONGSHENG SHENZHOU TOURISM MANAGEMENT Co. LTD. (Ningbo, China) and ZHEJIANG LINGCHUANG NETWORK TECHNOLOGY Co. LTD. (Hangzhou, China).

"Method and system for binocular ranging for children" was invented by Shuicai Huang (Hangzhou, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for binocular ranging for children is provided in this disclosure, which includes following steps: acquiring an image of a target area and world coordinates of a human body in left and right eyes; correcting the image to obtain a corrected image of the target area; performing face detection on the corrected image of the t...