An image processing circuit comprising thresholding limiters and constrained smoothing filters splits a source image into two images, which, when projected overlaid on a projection surface by a pair of double stacked projectors, together form an image essentially identical to {TAIL ~ the source image}, but where one image has {HEAD ~ significantly less high frequency components} 
An image processing circuit comprising thresholding limiters and constrained smoothing filters splits a source image into two images , which , when projected overlaid on a projection surface by a pair of double stacked projectors , together form an image essentially identical to { TAIL ~ the source image } , but where one image has { HEAD ~ significantly less high frequency components }
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