Relative position based eye-tracking system
AssigneeAvegant Corp.
InventorsAaron Matthew Eash, Baker Ngan, D. Scott Dewald, Andrew John Gross, Edward Chia Ning Tang, Jindrich Semenec, Warren Cornelius Welch, III, William Tze-Tse Chien
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Abstract
A relative position based eye tracking system includes a light source to illuminate a portion of the eye and an optical sensor to capture a sequence of samples of the portion of the eye. The system further includes a sample comparator to compare two samples and a relative position calculator to calculate a change in the position of the eye based on data from the sample comparator.
Claims21
A relative position based eye tracking system, the system comprising:
- a light source to illuminate a portion of the eye;
- an optical sensor to capture a sequence of samples of the portion of the eye;
- a processor configured to implement a sample comparator to compare two samples;
- the processor configured to implement a relative position calculator to calculate a change in the position of the eye based on data from the sample comparator;
- and
- the processor configured to implement a global correction system triggered based on a non-time based trigger, the global correction system configured to determine an authoritative absolute position of the eye based on external data and use the authoritative absolute position to correct the relative position calculator.
An eye tracking system for a head-mounted display, the eye tracking system comprising:
- a processor configured to implement a relative position calculator to calculate a change in a position of an eye based on data from a plurality of samples collected at a frequency of 100 Hz or higher, the relative position calculator not using an eye map;
- the processor configured to implement a global correction system to determine an authoritative absolute position of the eye based on external data and use the authoritative absolute position to correct an output of the relative position calculator, the global correction system triggered based on a non-time based trigger.
A head-mounted display system comprising:
- a display system to show images to the user;
- a relative position based eye tracking system, to track an eye of the user, the relative position based eye tracking system comprising:
- a light source to illuminate a portion of the eye;
- an optical sensor to capture a sequence of samples of the portion of the eye;
- a processor configured to implement a sample comparator to compare two samples;
- the processor configured to implement a relative position calculator to calculate a change in the position of the eye based on data from the sample comparator;
- and
- the processor configured to implement an absolute position calculator that provides an absolute position for a gaze angle and gaze point based on data from the relative position calculator, wherein the relative position based eye tracking system does not utilize an eye map;
- and
- the processor configured to implement a global correction system to determine an authoritative absolute position of the eye, and use the authoritative absolute position to correct the relative position calculator, wherein the global correction system is triggered by a non-time based trigger.
Dependencies are inferred from the claim text.