IIR Filter Models of Haptic Vibration Textures

—Haptic tactile feedback is a widely used and effective technique in virtual reality applications. When an object’s surface is explored by stroking it using fingers, finger nails or a tool, a vibration response is sensed. The vibrations convey information about the surface finish and patterns in the surface structure, and they may help to identify the surface. We study characteristics of real-world, physical objects based on actual measurements. We propose novel techniques for modeling haptic vibration textures using digital filters which can simulate both stochastic and patterned textures of objects. The modeling is based on a spatial distribution of infinite-impulse-response filters which operate in the time domain. We match the impulse response of the filters to acceleration profiles obtained from scanning of real-world objects. The results show our modeling is efficient in representing varying roughness characteristics of both regularpatterned surfaces and stochastic s...

• Type: Journal
• Year: 2011
• Where: TIM
• Authors: Vijaya Lakshmi Guruswamy, Jochen Lang, Won-Sook Lee
• Keywords: TIM 2011, Vibration, Virtual Reality Applications, —Haptic Tactile Feedback