Projection Mapping is a new creative medium where video projectors overlay virtual content onto physical objects. Normally projectors are used to put PowerPoint presentations onto flat screens. With Projection Mapping, projectors are used to apply magic to non-flat, everyday objects. By carefully aligning the projected virtual content with the physical objects, a stunning variety of effects can be accomplished.
Shown here a projector overlays a virtual checkerboard pattern onto a physical teapot.
Projection mapping can be used for advertising, live concerts, theater, gaming, computing, decoration and anything else you can think of.
Projection mapping can be used on buildings to inform, entertain or advertise.
Projection mapping can be used to create immersive experiences for theater, television or in the home.
Projection mapping can bring everyday objects to life (like shoes).
Projection mapping can be used on 2D objects like paintings.
Finally projection mapping can be used for games.
These are just a couple of random examples from a rapidly growing form of new media. See the blog for more examples.
Projection Mapping is also known as Spatial Augmented Reality (SAR) in the academic world. Ramesh Raskar's initial work with Shader Lamps pioneered the fundamentals of SAR. Some people also call it Video Mapping.