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This calibration can be performed once after the IMU has been tightly attached to the camera system. Additionally, it requires moving the camera system. Therefore, we recommend doing it before installing the system in the more constrained space of a car or simulator cabin. Assembling this setup is separately documented here Assembly of IG1 IMU Slide Holder for SmartTrack 3
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The procedure is explained quickly: the camera system and the IMU are moved together while pointing at a stationary body which is tracked by the camera system, typically the headset. By comparing the tracking data for the body and the IMU data, the relationship between the two can be established. LPVR-DUO performs this comparison and derives the necessary calibration parameters.
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