Eye-Hand Coordination in Fish Tank VR
The Importance of Stereo and Eye-Coupled Perspective for Eye-Hand Coordination in Fish Tank VR
-Roland Arsenault and Colin Ware
In this study Arsenault and Ware compare results obtained from a Fish Tank VR eye-hand coordination experiment with previous results obtained by similar studies. The author’s claimed that previous studies showed contribution of head tracking based change in perspective to be inferior to stereoscopic depth information. However, they attributed these results to the setup of the experiments that did not really require a change in perspective. In their experiment the authors carefully designed the environment to provide both stereoscopic depth cues as well as require a change in perspective to complete the task. They also provided force feedback to the subjects to reinforce the sense of reality and recalibrate the depth perception as is shown by prior studies. The experiment also accounted for Fitt’s law based delays in reaching different targets. The results, contrary to the initial assumptions, showed that the depth cues obtained from perspective change provided only 11% improvement in time taken to complete the task while stereoscopic views accounted for up to a 33% improvement. Indeed the author’s do recommend using both techniques wherever feasible.
It was interesting to see the elaborate setup required to compare what I initially thought was a simple experiment. Although the authors do account for some of the disparities with earlier results, the fact that there are any, makes me really question our understanding of perception or the human brain in general.
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