Evaluating Force-Based Haptics for Immersive Tangible Interactions with Surface Visualizations

Area of Science:

• Human-Computer Interaction
• Virtual Reality
• Haptics

Background:

• Haptic feedback is crucial for analyzing 3D data on surface visualizations.
• Virtual reality (VR) enhances spatial perception and interaction with haptic feedback.
• Existing research explores various haptic interaction modes for VR surface visualizations.

Purpose of the Study:

• To evaluate on-surface and assisted on-surface haptic interaction modes against a no-haptic mode.
• To assess the impact of haptic feedback on tasks involving surface visualizations.
• To compare user performance in terms of speed and accuracy across different haptic conditions.

Main Methods:

• A within-subjects user study was conducted using a force-based haptic stylus.
• Three interaction modes were tested: no-haptic, on-surface (collision forces), and assisted on-surface (collision + snapping forces).
• Participants performed tasks including point localization and curve brushing on surface visualizations with varying complexity and occlusion.

Main Results:

• Curve brushing time was similar across all modes, but on-surface modes produced smoother curves.
• Assisted on-surface mode showed higher accuracy in curve brushing than the on-surface mode.
• On-surface mode was slower for point localization, with accuracy influenced by visual cues and occlusion.

Conclusions:

• Haptic force feedback can serve as a valuable tangible input for surface visualizations.
• Assisted on-surface haptic feedback offers improved accuracy for specific interaction tasks.
• Design considerations for haptics-based tangible interactions in VR should account for visual cues and occlusion.