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Proceedings Paper

Psychophysical evaluation of a variable friction tactile interface
Author(s): Evren Samur; J. Edward Colgate; Michael A. Peshkin
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Paper Abstract

This study explores the haptic rendering capabilities of a variable friction tactile interface through psychophysical experiments. In order to obtain a deeper understanding of the sensory resolution associated with the Tactile Pattern Display (TPaD), friction discrimination experiments are conducted. During the experiments, subjects are asked to explore the glass surface of the TPaD using their bare index fingers, to feel the friction on the surface, and to compare the slipperiness of two stimuli, displayed in sequential order. The fingertip position data is collected by an infrared frame and normal and translational forces applied by the finger are measured by force sensors attached to the TPaD. The recorded data is used to calculate the coefficient of friction between the fingertip and the TPaD. The experiments determine the just noticeable difference (JND) of friction coefficient for humans interacting with the TPaD.

Paper Details

Date Published: 10 February 2009
PDF: 7 pages
Proc. SPIE 7240, Human Vision and Electronic Imaging XIV, 72400J (10 February 2009); doi: 10.1117/12.817170
Show Author Affiliations
Evren Samur, Ecole Polytechnique Fédérale de Lausanne (United States)
J. Edward Colgate, Northwestern Univ. (United States)
Michael A. Peshkin, Northwestern Univ. (United States)

Published in SPIE Proceedings Vol. 7240:
Human Vision and Electronic Imaging XIV
Bernice E. Rogowitz; Thrasyvoulos N. Pappas, Editor(s)

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