1. University of Applied Sciences Upper Austria, Hagenberg, Austria
2. Microsoft Research, Cambridge, United Kingdom
3. Microsoft Research, Cambridge, Cambridgeshire, United Kingdom
4. Institute of Surface Technologies and Photonics, Joanneum Research Forschungsgesellschaft m.b.H, Weiz, Austria
5. Joanneum Research Forschungsgesellschaft m.b.H, Weiz, Austria
6. Joanneum Research Forschungsgesellschaft m.b.H., Weiz, Austria