1. A method of approximating a gray scale tone in an input image with a different range image producer comprising the steps of: dividing the input image into a plurality of supercells; dividing each supercell into a plurality of individual cells; defining an expanded cell larger that each of the individual cells; defining a mapping of an input gray scale tone to an output gray scale tone for each pixel of the expanded cell; for each pixel of the input image determining a pixel of the expanded cell corresponding to the input pixel; determining an output gray scale tone corresponding to the pixel input gray scale tone and the corresponding pixel of the expanded cell.