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Event-Based Near-Eye Gaze Tracking Beyond 10,000 Hz
IEEE Transactions on Visualization and Computer Graphics
|March 29, 2021
Summary
This study introduces a novel hybrid frame-event gaze tracking system achieving over 10,000 Hz update rates. This breakthrough enables high-speed mobile eye tracking for virtual reality applications.
Area of Science:
- Computer Vision
- Human-Computer Interaction
- Biomedical Engineering
Background:
- Modern gaze-tracking systems face bandwidth and power limitations, restricting data acquisition to ~300 Hz.
- This speed limit hinders real-time applications like predictive rendering and studying subtle eye movements (microsaccades) in mobile or head-mounted devices.
Purpose of the Study:
- To develop a hybrid frame-event-based near-eye gaze tracking system with significantly higher update rates.
- To achieve accuracy comparable to high-end commercial trackers for mobile and in-the-wild applications.
Main Methods:
- Utilized emerging event cameras for simultaneous frame and event data acquisition.
- Developed an online 2D pupil fitting method updating a parametric model based on events.
- Implemented a polynomial regressor for real-time point-of-gaze estimation from the pupil model.
Main Results:
- Achieved system update rates exceeding 10,000 Hz.
- Demonstrated accuracy of 0.45°-1.75° across fields of view from 45° to 98°.
- Validated performance against high-end commercial trackers under identical conditions.
Conclusions:
- The proposed system overcomes limitations of conventional gaze trackers.
- Enables ultra-low-latency gaze-contingent rendering and display for virtual and augmented reality.
- Paves the way for a new generation of advanced eye-tracking applications.
