Moveable projected displays using projector-based tracking

A joint project with Microsoft Research

By projecting smaller patterns over the discovered locations of the sensors, we can obtain location updates sufficiently fast to do interactive tracking of hand-held surfaces and objects. Additionally, small patterns free up pixels that can be used for application content. This work also describes a technique for projecting the patterns in a frequency modulated (FM) manner such that they are imperceptible to the human eye. The result is that the patterns appear as solid gray squares eliminating the high-contrast black and white patterns from before.