ALT: Antilatency Tracker is positional tracking for mobile VR. ALT defines user’s position and movements using gyroscope and accelerometer data adjusted for optical data from on-board camera. It powers precise positioning with low latency, high update rate, and predictive tracking. The tracker predicts a user’s position 30 ms ahead. As a result the image doesn’t “arrive late” and the system doesn’t cause any dizziness or disorientation. Futhermore, the solution requires no calibration and is expandable to cover warehouse sizes and beyond. The tracker detects its own coordinates by infrared light markers on strips which define the gaming zone. Unlimited number of trackers can locate itself within the same zone powering multi-device and multi-user scenarios. The system provides up to 4 seconds of redundancy for moments when the camera loses sight of the strips so it can keep working even if the markers are obstructed, for example, by another user.
