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Previously, we proposed a pseudo-haptic method of changing the perceived roughness of virtual textured surfaces represented by vibrational feedback during pen-surface interaction. This study extends the method to finger-surface interactions in order to change the roughness judgment of real surface. Users watched computer-generated visual oscillations of the contact point while exploring the texture using bare fingers. The user study showed that our method could modify roughness judgment of real textured surfaces.

Surface Roughness Judgment During Finger Exploration Is Changeable by Visual Oscillations