Gaze tracking variations using visible lights or dots

A system comprising:

• an eye tracking device having a sensor and one or more sensor targets;
• and
• a computing device coupled to the eye tracking device, wherein the system is configured to perform a method, the method comprising:
• gathering eye tracking data during a calibration process with the sensor of the eye tracking device;
• and
• determining, with the computing device, one or more calibration parameters from the eye tracking data,
• wherein the calibration process involves the one or more sensor targets and one or more display targets,
• wherein each said target defines a gaze point of the calibration process,
• 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 of the system 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.

A non-transitory computer readable medium having processor-executable instructions embodied therein, wherein execution of the instructions by a processor causes a processor to perform a method, the 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.

A method comprising:

• gathering eye tracking data during a calibration process with a first sensor of an eye tracking device;
• gathering calibration data with a second sensor of an eye tracking device;
• and
• determining one or more calibration parameters from the eye tracking data and the calibration 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,
• 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, 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 calibration data gathered with the second sensor, and the eye tracking data gathered during the calibration process.

A non-transitory computer readable medium having processor-executable instructions embodied therein, wherein execution of the instructions by a processor causes a processor to perform a method, the method comprising:

• gathering eye tracking data during a calibration process with a first sensor of an eye tracking device;
• gathering calibration data with a second sensor of an eye tracking device;
• and
• determining one or more calibration parameters from the eye tracking data and the calibration 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,
• 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, 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 calibration data gathered with the second sensor, and the eye tracking data gathered during the calibration process.