W. Hu, T. Lin, K. Sakai, A. Imamiya, and M. Omata (Japan)
User interface development, multimodal interface, lightness, haptic perception, virtual roughness, textured surface
It is natural for us to interact with computers using multimodal interfaces, as we do with real objects in real life. Among such interfaces, haptic (tactile) human computer interaction holds promise because of its unique bi-directional nature. However, much is unknown about how cross-modal interfaces work. To investigate how visual information and haptic information interact, we examined virtual haptic roughness perception under different lightness, using a PHANToM force feedback device. We found that visual information and haptic information did interact and drew the following conclusions: (1) It is better to use different visual setup to indicate different rough textured surfaces, and the same visual setup to indicate the same rough haptic textured surfaces; (2) Haptic textured surfaces are easier to perceive when they have a higher lightness; (3) A left right haptic textured surface layout is recommended when using PHANToM; (4) Haptic textured surfaces with sinusoidal grating numbers of 25, 28, 32, and 35 per 300 mm are distinguishable.
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