RaTTy: Mouse cum Pen

Approved cum laude.

2000 Degree in Mathematics at the University of Pisa. Dissertation with title " Polyhedral decomposition of hyperbolic manifolds with geodesic boundary " , supervisor prof. C. Petro-nio. Approved cum laude. dissertation with title " Deforming triangulations of hyperbolic 3-manifolds with geodesic boundary " , under the supervision of prof. C. Petronio. Approved cum laude. 2005 Non-permanent pos...

Comparing Parameter Manipulation with Mouse, Pen, and Slider User Interfaces

Visual fixation on one’s tool(s) takes much attention away from one’s primary task. Following the belief that the best tools ‘disappear’ and become invisible to the user, we present a study comparing visual fixations (eye gaze within locations on a graphical display) and performance for mouse, pen, and physical slider user interfaces. Participants conducted a controlled, yet representative, col...

Segmentation of Pen Strokes Using Pen Speed

We present a technique for segmenting pen strokes into lines and arcs. The technique uses pen speed information to help infer the segmentation intended by the drawer. To begin, a set of candidate segment points is identified. This set includes speed minima below a threshold computed from the average pen speed. It also includes curvature maxima at which the pen speed is again below a threshold. ...

The Pen

An insight into the freedom of using a pen: Pen-based system and pen-and-paper

In recent years the studies of freehand sketch began to peek into cognitive study area from the design media aspect. The development of pen-based system attempted to use pen as an input device, allowing sketches to be freely drawn in computers environment. The importance of the freehand sketch is in its ability to freely represent various drawing projections using ambiguous sketches. However, a...