Technology company Fujitsu has prototyped a Touchscreen interface which allows users to interact with physical paper documents as if they were on a touchscreen. Using a simple combination of a webcam and a consumer level projector, the project boasts an impressive list of capabilities including scanning, replication of imagery, three dimensional manipulation of objects, magnification, and additions of supplemental information when appropriate. The webcam feed is run through a program which detects the height of the hand, position of the fingers, rotation of the arm/wrist, among other metrics and converts them into commands for the projector, or uses them to capture imagery/text from the document present on the table.
Though the technology could seem redundant if the user already has his or her document digitally present, it does have interesting applications for older or foreign texts, more readily allowing the user to interact with these documents.
http://www.youtube.com/watch?v=I2l0qklSzks#t=46
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