1. A method of calibrating a projector system having two or more projectors, with one or more cameras, free of requiring the one or more cameras to image the entire screen, comprising the steps of: capturing, with the one or more cameras, one or more projected patterns from the projectors; mapping the projected pixels from each projector into a common coordinate system, the step of mapping being free of depending on a model of the lens properties of the camera; and mapping the common coordinate system to the screen, free of depending on a model of lens properties of the one or more cameras.