Patent ID: 9480397
Filing Date: 2016-11-01
CPC Classification: A61B,G06F,G06K

Claim Text:
1. A method comprising: gathering eye tracking data during a calibration process with a sensor of an eye tracking device; and determining one or more calibration parameters from the eye tracking data, wherein the calibration process involves a plurality of visible calibration targets, wherein each said target defines a gaze point of the calibration process, wherein the plurality of targets includes one or more display targets and one or more sensor targets, wherein each of the one or more display targets defines a gaze point within an image output to a display device at a location known with respect to the image, wherein each of the one or more sensor targets defines a gaze point attached to the eye tracking device at a location known with respect to the eye tracking device, and wherein said determining the one or more calibration parameters includes determining one or more geometric parameters which fits the location of each of the gaze points defined by the one or more display targets, the location of each of the gaze points defined by the one or more sensor targets, and the eye tracking data gathered during the calibration process.