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Hybrid system setup. The VR setup consists of a stereoscopic projection screen and an optical tracking system to track the user’s head and the input device (a) and (b). For the 2D setup, a touchscreen or an arbitrary tracked screen can be placed in front of the user. (c) In case of a tracked screen mouse input is calculated by utilizing data from the tracking system. (d) Alternatively, a touch screen or a tablet PC can be used directly.
