Interaction Techniques Using a Spherical Cursor for 3D Targets Acquisition and Indicating in Volumetric Displays

We present several innovative interaction techniques for 3D target acquisition and indication. These techniques make use of the shape of our cylindrical multi-touch interface, which we are developing as an interface for a volumetric display. Our interaction techniques are used to control a spherical cursor in 3D space. Notably, our techniques use a two-handed operation in which the position and size of the area touched is mapped directly to the position and size of the spherical cursor. This mapping can instantly determine the 4DOF of the spherical cursor, i.e., its 3D coordinates and its radius, and thus allows rapid 3D target acquisition and indication.