1. A system to generate a continuous tone image from tagged binary encoded image, comprising: a pattern identifier generator to generate a pattern identifier value based upon a pattern of pixels around a pixel of interest; an image type selector to generate an image type signal identifying an image context type in a pre-determined neighborhood of pixels around a pixel of interest; and a contone value generator, operatively connected to said pattern identifier generator and said image type selector, to generate a contone value from said pattern identifier value based upon said image type signal.