System for gaze interaction

A non-transitory machine readable medium having instructions stored thereon for correcting an incorrectly determined gaze point of a user on a display, wherein the instructions are executable by one or more processors for at least:

• determining, based on a stored offset value, an estimated gaze point of a user on a display, wherein the estimated gaze point of the user is determined by an eye tracking system that uses a geometrical eye model and, is different than an actual gaze point of the user and is adjusted based on the stored offset value, wherein the stored offset value is available from the non-transitory machine readable medium prior to the determining of the estimated gaze point;
• receiving a first indication that a first non-gaze interaction has occurred with the user;
• causing, in response to receiving the first indication, an indicator to be displayed on the display at the estimated gaze point;
• determining characteristics of a saccade of at least one eye of the user between the estimated point and the indicator which occurs in response to the indicator being displayed;
• causing, in response to the saccade of the at least one eye of the user, the indicator to be moved on the display to a corrected gaze point, wherein the corrected gaze point is based at least in part on the characteristics of the saccade;
• and
• updating the stored offset value based on the corrected gaze point and the estimated gaze point, wherein the updated offset value is further used to determine a subsequent estimated gaze point of the user on the display;
• storing information about the characteristics of the saccade, the information comprising an angle between the at least one eye of the user and the corrected gaze point, a position in space of the at least one eye, a characteristic of a pupil of the at least one eye;
• and
• continuously calibrating the geometrical eye model based on the information, wherein the subsequent estimated gaze point is estimated by the eye tracking system based on the continuous calibration of the geometrical eye model.

A method for correcting an incorrectly determined gaze point of a user on a display, wherein the method comprises:

• determining, continuously and based on a stored offset value, an estimated gaze point of a user on a display by determining a potential position on the display via an algorithm applied to data received from an eye tracking device, wherein the estimated gaze point of the user is determined by an eye tracking system that uses a geometrical eye model and, is different than an actual gaze point of the user and is adjusted based on the stored offset value, wherein the stored offset value is available from memory prior to the determining of the estimated gaze point;
• receiving a first indication that a first non-gaze interaction has occurred with the user;
• causing, in response to receiving the first indication, a first indicator to be displayed on the display at the estimated gaze point of the user at the time the first non-gaze interaction occurs;
• determining characteristics of a saccade of at least one eye of the user between the estimated gaze point and the first indicator which occurs in response to the first indicator being displayed;
• causing, in response to the saccade of the at least one eye of the user, a second indicator to be displayed at a corrected gaze point, wherein the corrected gaze point is based at least in part on the characteristics of the saccade;
• storing information regarding the user's eyes while the user is gazing at the corrected gaze point;
• and
• updating the stored offset value based on the stored information, wherein the updated offset value is further used to determine a subsequent estimated gaze point of the user on the display;
• storing information about the characteristics of the saccade, the information comprising an angle between the at least one eye of the user and the corrected gaze point, a position in space of the at least one eye, a characteristic of a pupil of the at least one eye;
• and
• continuously calibrating the geometrical eye model based on the information, wherein the subsequent estimated gaze point is estimated by the eye tracking system based on the continuous calibration of the geometrical eye model.