Tele-graffiti: a pen and paper-based remote sketching system

Abstract

Tele-Graffiti is a system allowing two.or more users to communicate remotely via hand-drawn sketches. What one person writes at one site is captured using a video camera, transmitted to the other site(s), and displayed there using an LCD projector. The advantage of our system over other intelligent desktops and white-boards is that the users are free to move the pieces of paper on which they are writing. In Tele-Graffiti, paper detection and tracking is based on real-time paper boundary detection.