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Modified Egocentric Viewpoint for Softer Seated Experience in Virtual Reality
IEEE Transactions on Visualization and Computer Graphics
|April 7, 2023
Summary
Virtual reality users can perceive enhanced haptic feedback through viewpoint manipulation. Shifting virtual viewpoints alters perceived seat softness and backrest flexibility, improving immersion.
Area of Science:
- Human-Computer Interaction
- Virtual Reality
- Haptics
Background:
- Virtual reality (VR) users often adopt sitting postures similar to the real world.
- Discrepancies between expected and actual haptic feedback in VR chairs reduce the sense of presence.
Purpose of the Study:
- To investigate if manipulating virtual viewpoint position and angle can alter perceived haptic features of a VR chair.
- To enhance the perceived softness of a seat and flexibility of a backrest in VR.
Main Methods:
- Implemented viewpoint shifts using an exponential formula upon seat contact to simulate softness.
- Adjusted viewpoint movement to follow backrest tilt, simulating flexibility.
- Conducted subjective evaluations to assess perceived haptic qualities.
Main Results:
- Participants perceived the virtual seat as softer and the backrest as more flexible than the actual chair.
- Viewpoint shifting successfully altered perceptions of haptic seat features.
Conclusions:
- Virtual viewpoint manipulation is a viable method for altering perceived haptic feedback in VR.
- While effective, significant alterations may lead to user discomfort.
