1. A method of modifying a multi-bit rasterized digital image to reduce registration artifacts, the image having a black plane and a color plane, comprising: electronically determining if a pixel is part of a connected black region by determining that if the current pixel value has a first predetermined relationship with respect to a first predetermined value; electronically determining if the pixel is part of a connected color region by determining that the average color value of a predetermined number of nearest neighbors of the pixel has a second predetermined relationship with respect to a second predetermined value; electronically determining if the pixel is part of a connected black region and a connected color region that are contiguous; and electronically performing a dilation operation on the color plane value of the pixel if the pixel is part of a connected black region and a connected color region that are contiguous.