Most available pencil sketch image filters fail to emulate the defining properties of a real pencil sketch; they are attempting to produce an end result that mimics the real thing, but pay no heed to the process that is used to create the product they are trying to recreate. The goal of this project was to rectify this by creating an image modification process which took into account the defining characteristics of a pencil sketch and produced a result that faithfully recreated them. By replicating the techniques used to create real life pencil sketches, this process produces an accurate "rough pencil sketch" image from a photographic input.