SidebySide system lets separately-projected images interact with one another

SideBySide projected images interact with one another

When you were a kid, perhaps you and your friends played with flashlights, chasing each other's light spots across the wall. Wouldn't it have been neat if those spots of light came to life when they met, and fought with each other? That's the type of thing that's now possible with the prototype SidebySide system, developed by Disney Research, Pittsburgh, and Carnegie Mellon University. It enables animated images from two separate handheld projectors to interact with each other on any surface.

Each of the units incorporates not only a pico projector, but also visible and infrared light emitters, a camera, a ranging sensor and an inertial measurement unit. The users see only the animated visible light images, while the cameras read each other's image marker codes, projected only in infrared. When the units see that their markers are nearing one another, they each cause their own animated images to react accordingly.

The inertial measurement units let the devices know the direction in which their beams are being moved by the user, while the ranging sensors tell them how close they are to the projection surface, both of which can also affect what the animated images do.

Source: gizmag.comAdded: 21 October 2011