Can ordinary surfaces such as desks and walls behave like touch-screens, providing us information that we can interact with? We present a new device called the Everywhere Displays projector (ED-projector) that combines projection and vision technologies to bestow interactivity on any surface. The ED-projector acts as a pervasive display by directing light from an LCD projector onto different surfaces using a steerable mirror while correcting for distortion caused by oblique projection. It also acts as an input device by recognizing gestures on the projected surface with a pan/tilt camera. Based on an experiment involving hundreds of novice users in an augmented reality assembly task, we find that users readily relate to the idea of projected touch-screens. The experiment also reveals several interesting phenomena in the way users interact with projected displays and suggests directions for future research.
By: Claudio S. Pinhanez, Frederik C. Kjeldsen, Anthony Levas, Gopal S. Pingali, Jacob Hartman Mark E. Podlaseck, Vivek Kwatra, Paul B. Chou
Published in: RC22273 in 2001
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