Patent ID: 8958599
Filing Date: 2015-02-17
Classification: G06K

Abstract:
1. A computer-implemented method comprising: (a) analyzing eye-image data to determine observed movement of a reflected image over a predetermined period, wherein the reflected image is reflected from an eye; (b) using head-movement data to determine a first eye-movement component that corresponds to head movement during the predetermined period; (c) determining a first expected movement of the reflected image, wherein the first expected movement corresponds to the first eye-movement component; (d) determining a second eye-movement component based on a first difference between the observed movement of the reflected image and the first expected movement of the reflected image; (e) determining a second expected movement of the reflected image based on the combination of the first eye-movement component and the second eye-movement component; (f) determining a second difference between the observed movement of the reflected image on the corneal surface and the second expected movement of the reflected image; (g) if the second difference is less than a threshold difference, then setting eye-movement data for the predetermined period based on the second eye-movement component; and (h) if the second difference is greater than the threshold difference, then: