Human Interface Systems Using Intentional and Unintentional Behaviors

Human interaces are usually designed to repond only to intentional human behaviors. However, humans show unintentional behaviors as well. They can convey useful information to realize user-friendly human interfaces. This paper presents two human interface systems using both types of behaviors: a gesture-based interface and an intelligent wheelchair. In the first system, only intentional hand movements are chosen using unintentional behaviors. In the second system, almost unintentional behaviors following intentional behaviors can be used to control the wheelchair movements. Experimental systems working in real time have been developed. Their operational experiments prove our approach promising.