This article illustrates a dozen great ideas about a world covered with small cheap video projectors.
Build a tiny projector into each of those devices, though, and the world becomes your display. Raskar’s team has developed hardware and software that can project digital images onto whatever surface is handy—the wall, say, or a desktop—and make them look good even if the impromptu screen isn’t nice and smooth. And “once you buy into this notion that people would like to have this kind of an attachment,” he asks, “what will they do beyond just looking at those images?”
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