1. A method for masking images in a multi-projector system, comprising the steps of: a) converting, using signal processors associated with at least two projectors, at least two independent input video signals into at least two independent signals for masked images, each masked image having an image region and a region of attenuated brightness; and b) independently projecting the at least two masked images via the at least two projectors to a common location, such that the at least two masked images are at least partially superimposed.