Gaze tracking system with calibration improvement, accuracy compensation, and gaze localization smoothing

A system of claim 13, further comprising:

• a gaze calibration element, and
• a gaze correction element;
• wherein
• the gaze calibration element is configured to define a plurality of calibration locations, and
• for each calibration location:
• receives, from the gaze tracking device, one or more reported locations on the display area as the user gazes at the calibration location,
• determines a location error associated with the calibration location, based on a difference between the one or more reported locations and the calibration location;
• and
• the gaze correction element is configured to:
• divide the display area into a plurality of correction zones, each correction zone including one or more of the plurality of calibration locations;
• and
• for each correction zone:
• determines a correction function for the zone based on the location errors at the one or more calibration locations of the zone;
• and
• receive a subsequent gaze location provided by the gaze tracking device,
• determine a particular zone based on the subsequent gaze location,
• apply the correction function of the particular zone to the subsequent gaze location to determine a corrected location, and
• communicates the corrected location to the application.