Chair for Computer Aided Medical Procedures & Augmented Reality
Lehrstuhl für Informatikanwendungen in der Medizin & Augmented Reality

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J. Sch{\"o}ning, J. Hook, N. Motamedi, P. Olivier, F. Echtler, P. Brandl, L. Muller, F. Daiber, O. Hilliges, M. Löchtefeld, T. Roth, U. von Zadow
Building Interactive Multi-Touch Surfaces
Journal of Graphics, GPU, & Game Tools (bib)

Multi-touch interaction with computationally enhanced surfaces has received considerable attention in recent years. Hardware implementations of multitouch interaction such as frustrated total internal reflection (FTIR) and diffused illumination (DI) have allowed for the low-cost development of surfaces. Although many of these technologies and associated applications have been presented in academic settings, the practicality of building a high-quality multi-touch{enabled surface, both in terms of the software and hardware required, are not widely known. We draw upon our extensive experience as developers of multi-touch technology to provide practical advice in relation to building and deploying applications upon multi-touch surfaces. This includes technical details of the construction of optical multi-touch surfaces, including infrared illumination, silicone compliant surfaces, projection screens, cameras, filters, and projectors, and an overview of existing software libraries for tracking.
This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each authors copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder.

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