1. A method for raster image processing onto an output device, by a user, of a digital file containing an original digital image and a set of parameters for at least one resolution independent modification transformation, comprising: selecting , using a computer, a region and a resolution for image display on said output device; applying , using a computer, said at least one resolution independent modification transformation to said original digital image so as to produce said region of a modified original image at said resolution; and rendering , using a computer, said region of said modified original image on said output device.