T4T: Tangible interface for tuning 3D object manipulation tools

A 3D User Interface for manipulating virtual objects in Augmented Reality scenarios on handheld devices is presented. The proposed solution takes advantage of two interaction techniques. The former (named “cursor mode”) exploits a cursor, which position and movement are bound to the view of the device; the cursor allows the user to select objects and to perform coarse-grain manipulations by moving the device. The latter (referred to as “tuning mode”) uses the physical affordances of a tangible interface to provide the user with the possibility to refine objects in all their aspects (position, rotation, scale, color, and so forth) with a fine-grained control.