ClearBoard: a seamless medium for shared drawing and conversation with eye contact
CHI '92 Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Lucid touch: a see-through mobile device
Proceedings of the 20th annual ACM symposium on User interface software and technology
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Most lectures in mathematics and in the natural sciences make prominent use of blackboards. Developing an idea is much more natural and interactive with hand-drawn sketches than with glitzy prepared slides. The art of drawing is undergoing a renaissance, which can be seen in literature [Roam 2008] as well as in educational videos on the Web. This work demonstrates a low-cost real-time system to visually enhance such lectures. Unlike related past approaches that started with [Ishii and Kobayashi 1992], it works with a minimal setup such as a tablet PC with integrated webcam.