ALEXANDRIA, Va., July 16 -- United States Patent no. 12,670,619, issued on June 30, was assigned to Tobii AB (Danderyd, Sweden).
"Eye tracking" was invented by Mikael Rosell (Danderyd, Sweden).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method of determining a presence of a tear in an eye of a user of an eye tracking system, the method comprising receiving an image of the eye of the user, processing the image to identify one or more features of the image, comparing the one or more identified features to one or more expected features, and determining that a tear is present in the eye of the user if the one or more identified features differs from the one or more expected features by at least a threshold a...