1. A system for imaging documents, comprising: (a) an image sensor; (b) at least two different light sources, wherein each light source produces a different mode of illumination; (c) a lookup table that divides documents into discrete successive sections and specifies a mode of illumination for each section of a document during imaging; and (d) means for synchronizing said light sources with said image sensor to sequentially illuminate a document passing in front of the image sensor according to said lookup table, producing an interleaved, multi-mode image of said document.