1. A method of digital image enhancement, the method comprising: creating an edge map image from an input image using a processor; and combining the edge map image with the input image using local clamping to produce an output image having features that are one of emboldened and thinned, wherein local clamping limits a value of a central pixel based on a value of a pixel in a local vicinity of the central pixel and wherein the output image is one or more of stored in a memory, displayed to a user, passed to another image processing operation and transmitted over a communication channel.