Patent ID: 8780206
Filing Date: 2014-07-15
Classification: G06K,G07D

Abstract:
1. A system for imaging documents, comprising: an image sensor comprising a line scan camera, the line scan camera adapted to capture a plurality of line images of a document, at least two of the plurality of line images captured under differing modes of illumination, wherein the line scan camera comprises a plurality of light sensors forming a column, the column perpendicular to a direction of travel of the document; at least two different light sources, wherein each light source produces a different mode of illumination; a memory storing a lookup table that divides documents into discrete successive sections and specifies a mode of illumination for each section of said document during imaging; and means for synchronizing said light sources with said image sensor to sequentially illuminate the document passing in front of the image sensor in accordance with said lookup table, producing an interleaved, multi-mode image of said document, the interleaved, multi-mode image comprising at least a first portion and a second portion, the first portion of the interleaved, multi-mode image produced while a first light source in the at least two different light sources illuminates said document, the second portion of the interleaved, multi-mode image produced while a second light source is the at least two different light sources illuminates said document.