1. A method of generating an enhanced image based on a scanned image, the scanned image comprising image pixel signals having been generated with use of an image scanner, an image pixel signal having a binary value, the method comprising the automated steps of: filtering one or more image pixel signals of the scanned image to form a filter signal, the filter signal corresponding to a given image pixel signal; comparing a value of the filter signal with a value of the given image pixel signal; determining whether complementing the value of the given image pixel signal reduces the sharpness of a wedge-like shape in the image; and complementing the binary value of the given image pixel signal when (i) doing so does not reduce the sharpness of the wedge-like shape in the image and (ii) said filter signal value and given image pixel signal value are not equal, to generate an image pixel signal of the enhanced image.