ALEXANDRIA, Va., June 16 -- United States Patent no. 12,307,713, issued on May 20, was assigned to AUTEL ROBOTICS Co. LTD. (Guangdong, China).
"Camera calibration method and apparatus and electronic device" was invented by Zhenyou Dai (Guangdong, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "Embodiments of the present invention relate to the field of unmanned aerial vehicle (UAV) technologies, and in particular, to a camera calibration method and apparatus and an electronic device. The method includes: obtaining a calibration image acquired by a camera on a calibration object, where the calibration object includes at least two basic units, and each basic unit has a different pattern; extracting featur...