Modifying an identified angle of edged shapes using pseudo-haptic effects

In this paper, we focus on modifying the identification of an angle of edges when touching it with a pointing finger, by displacing the visual representation of the user's hand in order to construct a novel visuo-haptic system. We compose a video see-through system, which enables us to change the perception of the shape of an object a user is visually touching, by displacing the visual representation of the user's hand as if s/he was touching the visual shape, when in actuality s/he is touching another shape. We had experiments and showed participants perceived angles of edges that was the same as the one they were visually touching, even though the angles of edges they were actually touching was different. These results prove that the perceived angles of edges could be modified if the difference of angles between edges is in the range of −35° to 30°.