a method for enhancing the contour fidelity of printed images of two or more colors is described , which includes obtaining a digital representation of the color image and finding color separations of each color . each color separation is enhanced by a single set of inverse symmetrical templates , the set including templates in which the second template is always the inverse of the first , and the third and fourth templates are 180 degree rotations of the first two . the resulting smoothed color separations are recombined into an enhanced image without separation error .