DIVE: Fluid Display for 3D CG Manipulation with Visual Continuity

In this paper, we propose "DIVE", an intuitive 3D CG manipulation system with fluid display. DIVE displays 3D CG objects on the surface of a tank that is filled with opaque liquid. DIVE's user inserts his/her arm into the fluid display, and manipulates the CG objects by the hand under the liquid surface. DIVE also displays a CG hand (virtual hand) on the surface instead of the unseen hand under the surface. The virtual hand seems to be joined to the user's real arm above the surface. Its appearance and motion are synchronized with that of the unseen hand. Using DIVE, we can feel as if we are manipulating 3D CG objects with our own hand. Experimental results showed that the prototype could provide acceptable accuracy and stability in a part of the fluid display.