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Applying Incongruent Visual-Tactile Stimuli during Object Transfer with Vibro-Tactile Feedback
Published on: May 23, 2019
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Perception of Soft Objects in Virtual Environments Under Conflicting Visual and Haptic Cues.
IEEE Transactions on Haptics
|October 5, 2023
Summary
This study introduces a new haptic device for virtual reality (VR) that enhances the perception of soft object stiffness. By controlling visual and haptic cues, it expands the range of detectable stiffness in virtual environments.
Area of Science:
- Human-Computer Interaction
- Virtual Reality
- Haptics
Background:
- Rendering soft virtual objects with handheld haptic devices is challenging due to physical limitations.
- Existing haptic devices have limited force resolution and range for displaying object stiffness.
Purpose of the Study:
- To develop a cable-driven haptic device for rendering forces of soft virtual objects.
- To investigate the perception of soft objects in virtual environments using the developed device.
- To expand the range of conveyable object stiffness in virtual environments.
Main Methods:
- Developed a cable-driven haptic device for grasping and squeezing soft 3D virtual objects.
- Investigated human perception of stiffness by manipulating visual and haptic cues.
- Proposed a new metric, Apparent Stiffness Difference, to predict stiffness perception.
Main Results:
- The developed haptic device effectively renders forces for soft virtual objects.
- Controlling visual-haptic cue relationships significantly expands the perceived stiffness range.
- Apparent Stiffness Difference predicts human stiffness perception under conflicting cues.
Conclusions:
- The proposed haptic device and Apparent Stiffness Difference metric enable enhanced rendering of soft objects in virtual environments.
- This approach overcomes the physical limitations of haptic devices for stiffness rendering.
- It significantly improves the realism and immersion of virtual object interaction.
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