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Proceedings Paper

Perceptual dimensions for a dynamic tactile display
Author(s): Thrasyvoulos N. Pappas; Vivien C. Tartter; Andrew G. Seward; Boris Genzer; Karen Gourgey; Ilona Kretzschmar
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Paper Abstract

We propose a new approach for converting graphical and pictorial information into tactile patterns that can be displayed in a static or dynamic tactile device. The key components of the proposed approach are (1) an algorithm that segments a scene into perceptually uniform segments; (2) a procedure for generating perceptually distinct tactile patterns; and (3) a mapping of the visual textures of the segments into tactile textures that convey similar concepts. We used existing digital halftoning and other techniques to generate a wide variety of tactile textures. We then conducted formal and informal subjective tests with sighted (but visually blocked) and visually-impaired subjects to determine the ability of human tactile perception to perceive differences among them. In addition to generating perceptually distinguishable tactile patterns, our goal is to identify significant dimensions of tactile texture perception, which will make it possible to map different visual attributes into independent tactile attributes. Our experimental results indicate that it is poosible to generate a number of perceptually distinguishable tactile patterns, and that different dimensions of tactile texture perception can indeed be identified.

Paper Details

Date Published: 10 February 2009
PDF: 12 pages
Proc. SPIE 7240, Human Vision and Electronic Imaging XIV, 72400K (10 February 2009); doi: 10.1117/12.817182
Show Author Affiliations
Thrasyvoulos N. Pappas, Northwestern Univ. (United States)
Vivien C. Tartter, City College, CUNY (United States)
Andrew G. Seward, Northwestern Univ. (United States)
Boris Genzer, City College, CUNY (United States)
Karen Gourgey, Baruch College (United States)
Ilona Kretzschmar, City College, CUNY (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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