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Roughness and spatial density judgments on visual and haptic textures using virtual reality

MPG-Autoren
http://pubman.mpdl.mpg.de/cone/persons/resource/persons84862

Drewing,  K
Max Planck Institute for Biological Cybernetics, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons83906

Ernst,  MO
Research Group Multisensory Perception and Action, Max Planck Institute for Biological Cybernetics, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons84748

Klatzky,  R
Max Planck Institute for Biological Cybernetics, Max Planck Society;

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Zitation

Drewing, K., Ernst, M., Lederman, S., & Klatzky, R. (2004). Roughness and spatial density judgments on visual and haptic textures using virtual reality. In 4th International Conference EuroHaptics 2004 (pp. 203-206). München, Germany: Institute of Automatic Control Engineering.


Zitierlink: http://hdl.handle.net/11858/00-001M-0000-0013-D8FB-0
Zusammenfassung
The purpose of this study is to investigate multimodal visual-haptic texture perception for which we used virtual reality techniques. Participants judged a broad range of textures according to their roughness and their spatial density under visual, haptic and visual-haptic exploration conditions. Participants were well able to differentiate between the different textures both by using the roughness and the spatial density judgment. When provided with visualhaptic textures, subjects performance increased (for both judgments) indicating sensory combination of visual and haptic texture information. Most interestingly, performance for density and roughness judgments did not differ significantly, indicating that these estimates are highly correlated. This may be due to the fact that our textures were generated in virtual reality using a haptic pointforce display (PHANToM). In conclusion, it seems that the roughness and spatial density estimate were based on the same physical parameters given the display technology used.