VideoDraw: a video interface for collaborative drawing
CHI '90 Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Robust and Accurate Visual Echo Cancelation in a Full-duplex Projector-Camera System
IEEE Transactions on Pattern Analysis and Machine Intelligence
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Task and reference spaces are important channels of communication for remote collaboration. A number of systems exist for sharing these spaces, but all of them have an inherent flaw: none can share arbitrary physical and digital objects on arbitrary surfaces. We have created PixIO, a new cost-effective, light-weight peripheral device that solves this problem. It shares hand gestures and arbitrary objects, such as notes, drawings, and digital documents, on arbitrary surfaces, such as tables and whiteboards.