MagicPot360: Free viewpoint shape display modifying the perception of shape

In this paper we developed the free-viewpoint curved surface shape display, using the effect of visuo-haptic interaction. In our research, we aim to realize the simple mechanic visuo-haptic system with which we can touch various objects with our real hands. We proposed the free-viewpoint shape display system in which users can touch a virtual object with various shape through the tablet device, while walking around the object. The system figured the difference of shape between the real object and the virtual one from the current viewpoint, and calculates the amount of displacement of the touching hand image to fit to the virtual object, in real time. This modification of the movement of a hand image evokes the effect of the visuo-haptic interaction, and enable users to feel touching various shapes from various viewpoints, although actually users touch a physically static object.