Phantom Illusion Based Vibrotactile Rendering of Affective Touch Patterns

Area of Science:

• Human-Computer Interaction
• Haptics
• Virtual Reality

Background:

• Accurate reproduction of affective touch in virtual reality (VR) is limited by current actuator technology.
• Most VR applications cannot directly compare simulated touch with real touch, relying instead on user expectations of plausibility.

Purpose of the Study:

• To investigate the creation of plausible affective touch patterns using vibration through a haptic armband.
• To develop and evaluate a parameterized rendering strategy for integrating plausible touch into VR applications.

Main Methods:

• Construction of a haptic armband array with 4x2 vibrational actuators.
• Development of a parameterized rendering strategy for touch simulation.
• Conducting two user studies to evaluate parameter ranges and multimodal scenario plausibility.

Main Results:

• User studies identified vibration duration and signal shape as key factors influencing touch plausibility.
• The haptic system achieved high plausibility ratings in a multimodal VR scenario.
• The rendering strategy proved effective for various stroking patterns.

Conclusions:

• Focusing on plausible, rather than authentic, touch reproduction enables innovative VR rendering techniques like the phantom illusion.
• The developed haptic armband and rendering strategy are suitable for creating expressive and plausible affective touch in VR.
• The system supports emerging research in social affective touch reproduction.