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 digital projectors, at least two independent input video signals into at least two masked images, each masked image having an image region and a mask having substantially no brightness; b) independently projecting the at least two masked images via the at least two digital projectors to a common location to form a composite image, such that the at least two masked images are at least partially superimposed, and wherein a mask of one masked image interfaces in the composite image with an image region of another masked image; and c) gradually attenuating brightness in a spatial manner adjacent to a boundary of a mask of at least one of the masked images.