Digisketch: taming anoto technology on LCDs

  • Authors:
  • Ramon Linus Hofer;Andreas Kunz

  • Affiliations:
  • Inspire AG, Zürich, Switzerland;ETH Zürich, Zürich, Switzerland

  • Venue:
  • Proceedings of the 2nd ACM SIGCHI symposium on Engineering interactive computing systems
  • Year:
  • 2010

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Abstract

The Anoto technology uses a non-repetitive pattern printed on paper to enable a camera-equipped pen to locate its absolute position on that pattern. This technology is also used on projection screens to create large-sized interactive areas, but suffers from the drawbacks such as shadow casting or space requirements. Up to now, no implementation exists that enables a tracking on LC-displays using the Anoto technology. Thus, we introduce Digisketch, which uses special films that can be applied to LC-displays, to back and front projections, or to glass, allowing pattern recognition for the pen's camera. After describing the technical development of a prototype, we compare this new possibility of using Anoto compatible surfaces with other traditional tracking systems for LC-screens.