Study of Tactile Shape-Display Technique based on Active Touch Movement

Abstract

When human beings touch an object in a space, they actively move their fingers. They can perceive the shape of the object, even which is larger than the fingertip due to the active touch movement. In current paper, we propose a new technique for displaying tactile shape using the active touch movement. If the object is moved in the same or opposite direction during the finger movement, the width of the object is perceived as expanded or shrunk. Controlling the velocity of the object, indicated width can be displayed. Therefore, we investigate the relationship between velocity and perceived width of the object.