Abstract: The invention, exemplified as a single lens stereo optics design with a stepped mirror system for tracking the eye, isolates landmark features in the separate images, locates the pupil in the eye, matches landmarks to a template centered on the pupil, mathematically traces refracted rays back from the matched image points through the cornea to the inner structure, and locates these structures from the intersection of the rays for the separate stereo views. Having located in this way structures of the eye in the coordinate system of the optical unit, the invention computes the optical axes and from that the line of sight and the torsion roll in vision. Along with providing a wider field of view, this invention has an additional advantage since the stereo images tend to be offset from each other and for this reason the reconstructed pupil is more accurately aligned and centered.

Abstract: Disclosed are systems and methods for tracking the eye. In one embodiment, a method for tracking the eye includes acquiring stereo images of the eye using multiple sensors, isolating internal features of the eye in the stereo images acquired from the multiple sensors, and determining an eye gaze direction relative to the isolated internal features.

Abstract: A rollover protection system for protecting exposed gunners during ground vehicle rollovers. The system retracts the gunner into the vehicle thereby removing him/her from physical danger. The system apparatus comprises a safety harness for the gunner with a retraction mechanism that is activated upon vehicle rollover. The safety harness is attached by elastic runners to pre-loaded springs which are held in a tension mode by clamps. The springs are placed in enclosed containers mounted to the bay-floor of the vehicle. The spring clamps are released by a computer in response to a gyroscopic sensor. Shock-absorbing inflatable cushions attached to the floor under the gunner are activated to cushion the retraction.