Figure 2.

Illustration of the different interactions featured in our VR system, controlled using the blue cross-hair widget attached to the controllers. (a) Rotations and translations are highlighted using the volume bounding box. Scaling is applied by pulling the corners of the bounding box. (b) Cropping uses a transparent red plane that cuts into the volume. (c) Landmarks include a pin point, a label line and a label and can be moved and stretched with the cross-hair tool. (d) The linear measurement tool allows the user to draw a green dashed line between two end points and displays the length in mm.