Nicholas Katzakis

Nicholas Katzakis, Kiyoshi Kiyokawa, Masahiro Hori et al.

We present Plane-Casting, a novel technique for 3D object manipulation from a distance that is especially suitable for smartphones. We describe two variations of Plane-Casting, Pivot and Free Plane-Casting, and present results from a pilot study. Results suggest that Pivot Plane-Casting is more suitable for quick, coarse movements whereas Free Plane-Casting is more suited to slower, precise motion. In a 3D movement task, Pivot Plane-Casting performed better quantitatively, but subjects preferred Free Plane-Casting overall.

Nicholas Katzakis, Frank Steinicke

We evaluate two methods of signalling abrupt direction changes of a robotic platform using a Mixed Reality avatar. The "Body" method uses gaze, gesture and torso direction to point to upcoming waypoints. The "Path" method visualises the change in direction using an angled path on the ground. We compare these two methods using a controlled user study and show that each method has its strengths depending on the situation. Overall the "Path" method was slightly more accurate in communicating the direction change of the robot but participants overall preferred the "Body" method.