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This tutorial discusses the Spatial Augmented Reality (SAR) concept, its advantages and limitations. It will present examples of state-of-the-art display configurations, appropriate realtime rendering techniques, details about hardware and software implementations, and current areas of application. Specifically, it will describe techniques for optical combination using single/multiple spatially aligned mirror-beam splitters, image sources, transparent screens and optical holograms. Furthermore,doi:10.1145/1185657.1185796 dblp:conf/siggraph/BimberR06 fatcat:xezuciurc5bb7lagctlek7ohle