Yannick Weiss
Steeven Villa
Albrecht Schmidt
Sven Mayer
Florian Müller
ABSTRACT
Providing users with a haptic sensation of the hardness and softness of objects in virtual reality is an open challenge. While physical props and haptic devices help, their haptic properties do not allow for dynamic adjustments. To overcome this limitation, we present a novel technique for changing the perceived stiffness of objects based on a visuo-haptic illusion. We achieved this by manipulating the hands’ Control-to-Display (C/D) ratio in virtual reality while pressing down on an object with fixed stiffness. In the first study (N=12), we determine the detection thresholds of the illusion. Our results show that we can exploit a C/D ratio from 0.7 to 3.5 without user detection. In the second study (N=12), we analyze the illusion’s impact on the perceived stiffness. Our results show that participants perceive the objects to be up to 28.1% softer and 8.9% stiffer, allowing for various haptic applications in virtual reality.
Footnotes
1 https://de.3dsystems.com/haptics-devices/touch-x, last accessed: 2023-02-15
Footnote2 https://www.forcedimension.com/products/omega, last accessed: 2023-02-15
Footnote
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Index Terms
- Using Pseudo-Stiffness to Enrich the Haptic Experience in Virtual Reality
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