RPI ID: 2002-051-201

Innovation Summary:
This invention presents a method and system for tracking eye gaze without requiring user-specific calibration, even under natural head movement. The system uses a camera to capture images of the eye while the subject views a screen. It analyzes features such as the glint (reflection from the cornea) and the pupil shape to estimate gaze direction. Key parameters—like the displacement vector between the glint and pupil center, the shape and orientation of the pupil, and the glint’s position—are extracted to compute the gaze point. This approach enables real-time, calibration-free gaze tracking, making it ideal for dynamic environments and user-friendly interfaces.

Challenges / Opportunities:
Traditional gaze tracking systems often require time-consuming calibration for each user and are sensitive to head movement, limiting their usability in real-world applications. This invention eliminates the need for calibration while maintaining accuracy, opening opportunities in human-computer interaction, assistive technologies, and behavioral research. It also supports broader adoption in consumer electronics and immersive environments where ease of use is critical.

Key Benefits / Advantages:
✔ Calibration-free operation for user convenience
✔ Robust to natural head movement
✔ Real-time gaze estimation using image-based features
✔ Suitable for a wide range of users and environments

Applications:
• Human-computer interaction and user interface design
• Assistive technologies for individuals with disabilities
• Behavioral and psychological research
• Virtual and augmented reality systems

Keywords:
#gazetracking #eyetracking #humancomputerinteraction #calibrationfree #assistivetechnology

Intellectual Property:
US Issued Patent 7,306,337