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Modified Egocentric Viewpoint for Softer Seated Experience in Virtual Reality.

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    Virtual reality users can perceive enhanced haptic feedback through viewpoint manipulation. Shifting virtual viewpoints alters perceived seat softness and backrest flexibility, improving immersion.

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    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.