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. Author manuscript; available in PMC: 2021 Jul 1.
Published in final edited form as: J Vasc Interv Radiol. 2020 Feb 13;31(7):1074–1082. doi: 10.1016/j.jvir.2019.09.020

Figure 7.

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.