[week 13 discussions-proprioception]
Main paper:
Moving Objects in Space: Exploiting Proprioception in Virtual-Environment Interaction
http://www.cs.unc.edu/~mine/papers/minecows.pdf
This paper described a VE interface by utilizing proprioception. Because of the lack of haptic contact, how to manipulate objects in immersive virtual environments is of difficulty. By investigating body-relative interaction, the author presents a set of gestural actions that map to grabbing, manipulating, deleting, and navigating. And experiments for evaluation are conducted to test its performance.
Additional papers:
1. An Evaluation of Techniques for Grabbing and Manipulating Remote Objects in Immersive Virtual Environments
http://www.cise.ufl.edu/research/lok/teaching/ve-s07/papers/grab.pdf
This paper gave us a review of techniques we used for grabbing and manipulating objects in VE. The two main categories are arm-extension techniques and ray-casting techniques. It is a good start for discussing the difference between each technique and pros and cons.
2. Virtual Reality on a WIM: Interactive Worlds in Miniature
http://www.cs.cmu.edu/~stage3/publications/95/conferences/chi/paper.html
This paper presents a different UI for selection, manipulation and navigation. The reason I chose this paper is that: firstly, it is implemented (this gives us confidence that it is feasible) and secondly, it shares some features with arm-extension technique as well as ray-casting technique, but introduces some other problems at the same time. So I think it will be interesting when comparing those three techniques together.
Questions:
1. Why haptic feedback is important in object selection and manipulation. What are the ways VE uses to deal with lack of this feedback?
2. Pros and Cons of body-relative interaction compared with other interaction techniques in VE.
3. What do you think is the shortcoming that will impede or restrict body-relative interaction from putting into reality?
4. Can we improve or extend this technique? How?
5. Other techniques for interaction in VE. Can we combine some of them together to get a better performance?
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