Week 6 Summary
The Importance of Stereo and Eye Coupled Perspective for Eye-Hand Coordination in Fish Tank VR
This study was done to examine the effects of correct versus incorrect perspective and stereoscopic depth for visually guided reaching. They were also interested in the adaptation that might occur when subjects changed their viewpoint when head tracking was turned off. To start off, they discuss the various terms like stereoscopic depth, motion parallax, perspective distortion and active touch. They also used the introduction section to talk about how over the years people have explored these terms in details, what impacts them and their effect and results, but it has been hugely varied. There are so many conflicting studies. They wanted to study these terms with respect to their correctness for a Fish Tank VR platform.
To test this correctness, they designed a Fish Tank VR setup for the Fitt’s experiment in which the task is to tap on cylinders of varying width and distances between them. To test the impact of head tracking, they intentionally intend to put obstructions in the middle of the task so that the subject has to look around it. Targets are generated according to a simple algorithm.
This experiment led to some interesting discussions and conclusions. According to their results, stereoscopic viewing is more important than eye coupled perspective fir visually guided reaching tasks. The gain from linking perspective to eye position was relatively small but ideally head tracking should be used. The value of different depth cues differs from task to task. Head tracking also had a measurable impact on the performance. Fish tank VR is different from most other VRs in the sense of resolution and field of view but these results can be generalized.
Comments are closed.