Evaluation of Human Skin Dynamic Characteristics Focused on Coupling Effect

Abstract

This paper discusses the evaluation of human skin dynamic characteristics by using the dynamic sensing system composed of an air jet supply for imparting a force to human skin, a line laser for making a line mark on skin surface, and a high speed camera for measuring skin deformation. To evaluate skin dynamic characteristics, we newly introduce the Deformation Shape Index (DSI=b_1/2/d) where d and b_1/2 are the defbrmation of the center and the half width at1/2d. We newly found that DSI recovers quickly for young subjects while it recovers slowly forseRior subjects.