Ubiquitous interactive displays in a retail environment

A steerable projector-camera system is used in a store to transform ordinary surfaces into interactive displays where customers look up products. Directions to products are projected on signage boards hung around the store. 1 A 13 Mpixel Ubiquitous Interactive Display Several researchers have explored virtual interactive display systems that combine projectors with cameras and computer vision methods that detect interaction with the projected image (for instance, Crowley et al. [2000]). To increase the flexibility and ubiquity of such systems, we have been building steerable projector-camera systems — called Everywhere Displays projectors (ED-projectors) —, where a pan/tilt mirror deflects the light from the projector to different surfaces, while a pan/tilt/zoom camera detects interaction with the projected images (see Pinhanez [2001]). Since the mirror pans about 200 ° and tilts 40°