Week 6 Summary
The importance of Stereo and Eye Couple Perspective for Eye-Hand Coordination in Fish Tank VR
– Roland Arsenault and Colin Ware
The term “Fish Tank VR” means a method for creating a small high-quality virtual environment. This paper tries to compare the impact of Stereoscopic Depth and Motion Parallax while touching, reaching objects in a VR. Stereoscopic depth is the information gained from disparities as opposed to motion parallax which refers to the depth information obtained as the observer moves relative to the environment.
The study was based on the lines of the Fitt’s Law experiments with the difference being that in this study the subjects were made to tap from the top of one cylinder to another while making changes to their viewing positions. The cylinders were of different sizes and the subject wore head tracking device along with stereo glasses. A virtual environment with coincident haptic and visual display was used for this study.
The variance for the study included head tracking, stereo, index of difficulty and trial number. The results showed it took 11% longer without head tracking and 33% longer with stereo disabled. The results suggested that stereoscopic viewing was more important than eye coupled perspective for visual tasks like reaching and when the targets get smaller. They also found that head tracking had a measurable effect on performance unlike others probably because these tasks required considerable head movements. However unlike previous experiments there was no evidence for adaptation or improvements after the first few trials.
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