Dynamic model of facial color for facial image synthesis in a virtual arm wrestling

An arm wrestling system using a 4-DOF force display with virtual human is developed for the affect display of facial color and expression, aiming for the application to training and rehabilitation support. In this paper, by the simultaneous measurement of facial skin temperature and facial color images, the dynamic change of facial color and expression are analyzed under static force display based on the transition of facial skin temperature. On the basis of the analysis, a dynamic facial color model is proposed for the affect display of the virtual facial color images under static force display.