TU Wien:Virtual and Augmented Reality VO (Kaufmann)/Prüfung 2023-10-30

1) MR, VR, AR [5pt]

1. Explain the Reality-Virtuality Continuum (Milgram). Explain the term MR. [2pt]
2. Give 2 specific examples for applications for AR and 2 examples for applications for VR. Describe one scenario where one technology is better than the other. [3pt]

2) Tracking Techniques [5pt]

1. What are advantages and disadvantages of infrared-optical tracking? (at least 2 of each) [2pt]
2. Describe how inertial tracking works. [3pt]
   1. Describe the principle of inertial tracking.
   2. Which accuracy can we expect? (absolute/relative)
   3. Does it either have high or low latency?
   4. What are disadvantages of this technique?

3) Design of a Tracking System [5pt]

We want to design a tracking system for a theater that tracks the actors on stage with 10-20cm accuracy. For example we want the light to automatically follow the actors.

1. Which technology would you choose. Explain why you chose that technology & describe how it works. [3pt]
2. Which alternative technology could be used? Explain it briefly. [2pt]

4) Projection [5pt]

1. Which technical challenges can occur when using Multiple projectors? Explain how to solve them. [3pt]
2. What hardware is required for a passive stereo setup? List all components you would need to set it up at home. [2pt]

5) Usability Engineering [4pt]

Describe the 4 steps for Usability engineering and the whole evaluation workflow. [4pt]

6) Optical Tracking [4pt]

1. How can structured light (Kinect 1) be used to measure depth with only one camera? [2pt]
2. What are disadvantages of Natural Feature Tracking? Name 2 examples when/why it fails. [2pt]

7) Interaction Techniques [5pt]

1. Which universal interaction techniques do you know? [3pt]
2. What are techniques for Selection? Name at least 2. [2pt]

8) Cybersickness, Presence [4pt]

1. Name 3 factors that increase cybersickness. [2pt]
2. Describe the term Presence. Why is it important in VR? [2pt]