Figure 7.
Various types of tracking with arrows representing transformations needed for virtual and physical objects to be congruent within the same space. Red-green-blue axes represent respective coordinate systems. A. “Inside-out tracking” using built-in sensors within the augmented reality headset. B. “Outside-in tracking” after integration with an external tracking system. Tracking of real physical objects by the AR headset (dotted line) is replaced by the external tracking system.