ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,421,080, issued on Sept. 23.
"Method and apparatus for non-contact and eye-movement input of elevator floor" was invented by Tianjian Liu (Fuzhou, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure discloses systems, methods and an apparatus for non-contact and eye-movement input of an elevator floor, which comprises: selecting a target camera according to a distance sensor installed on a button panel inside the elevator; triggering a corresponding target camera by using the distance sensor for face detection; standardizing a detected human face and locating a binocular position; inputting data of a standardized human face imag...