Three-Dimensional Analysis Method of Finger-Pad Deformation During Fingertip Pressing

Abstract

When humans touch objects, deformation occurs at the fingertips, stimulating mechanoreceptors that perceive tactile sensations. Therefore, there is a significant correlation between tactile sensation and deformation of the fingertip. To understand tactile sensation, it is necessary to quantify fingertip deformation and evaluate how it occurs. However, there is currently no method for quantifying fingertip deformation that takes individual differences into account. In this paper, we propose a method for measuring fingertip deformation during pressing motions using 3D scanning and analyzing deformation based on finger shape. The analysis results reveal differences in deformation based on finger shape.