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Towards a Statistical Model of Fingertip Contact Deformations from 4D Data
David Gueorguiev, Dimitrios Tzionas, Claudio Pacchierotti, Michael J. Black, and Katherine J. Kuchenbecker
(Max Planck Institute for Intelligent Systems, Germany; CNRS, France)
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Abstract: Little is known about the shape and properties of the human finger during haptic interaction even though this knowledge is essential to control wearable finger devices and deliver realistic tactile feedback. This study explores a framework for four-dimensional scanning and modeling of finger-surface interactions, aiming to capture the motion and deformations of the entire finger with high resolution. The results show that when the fingertip is actively pressing a rigid surface, it undergoes lateral expansion of about 0.2 cm and proximal/distal bending of about 30°, deformations that cannot be captured by imaging of the contact area alone. This project constitutes a first step towards an accurate statistical model of the finger's behavior during haptic interaction.

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Time stamp: 2019-03-23T19:24:58+01:00