ALEXANDRIA, Va., Feb. 11 -- United States Patent no. 12,548,193, issued on Feb. 10, was assigned to Essilor International (Charenton-le-pont, France).
"Calibration method of a portable electronic device" was invented by Christophe Barbe (Clichy, France), David Encaoua (Carrieres-sur-Seine, France) and Hui Li (Clichy, France).
According to the abstract* released by the U.S. Patent & Trademark Office: "A calibration method for determining angles between an image acquisition module reference frame and an accelerometer reference frame of a portable electronic device. The method includes receiving a set of images of a known pattern from the image acquisition module of the portable electronic device from different positions, the known pattern b...