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Roughness Perception of Haptically Displayed Fractal SurfacesSurface profiles were generated by a fractal algorithm and haptically rendered on a force feedback joystick, Subjects were asked to use the joystick to explore pairs of surfaces and report to the experimenter which of the surfaces they felt was rougher. Surfaces were characterized by their root mean square (RMS) amplitude and their fractal dimension. The most important factor affecting the perceived roughness of the fractal surfaces was the RMS amplitude of the surface. When comparing surfaces of fractal dimension 1.2-1.35 it was found that the fractal dimension was negatively correlated with perceived roughness.
Document ID
Document Type
Preprint (Draft being sent to journal)
Costa, Michael A.
(NASA Ames Research Center Moffett Field, CA United States)
Cutkosky, Mark R.
(Stanford Univ. Stanford, CA United States)
Lau, Sonie
Date Acquired
September 7, 2013
Publication Date
January 4, 2000
Subject Category
Computer Programming And Software
Distribution Limits
Work of the US Gov. Public Use Permitted.
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