SideBySide: ad-hoc multi-user interaction with handheld projectors

@article{Willis2011SideBySideAM,
  title={SideBySide: ad-hoc multi-user interaction with handheld projectors},
  author={Karl D. D. Willis and Ivan Poupyrev and Scott E. Hudson and Moshe Mahler},
  journal={Proceedings of the 24th annual ACM symposium on User interface software and technology},
  year={2011}
}
We introduce SideBySide, a system designed for ad-hoc multi-user interaction with handheld projectors. SideBySide uses device-mounted cameras and hybrid visible/infrared light projectors to track multiple independent projected images in relation to one another. This is accomplished by projecting invisible fiducial markers in the near-infrared spectrum. Our system is completely self-contained and can be deployed as a handheld device without instrumentation of the environment. We present the… 
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