Urban Putt Projection Mapping

Sleepwalkers employs a new visual technique, developed for this piece, that combines the pepper's ghost illusion and projection mapping to enable a computer generated character to seem to illuminate and interact physically with real-world objects. In each setting, the two effects are created simultaneously from a single projector. (The piece uses four projectors in total--one for each of four diorama-like settings.)

http://www.danrosenfeld.com/sleepwalkers