DETERMINING DOCUMENT FITNESS USING ILLUMINATION

摘要

According to an illustrative embodiment, a method for detecting a document includes capturing a first plurality of images of a document at a first wavelength of electromagnetic radiation, capturing a second plurality of images of the document at a second wavelength of electromagnetic radiation, and assembling the first and second pluralities of images to form one or more images of the document.

主权项

1. A currency processing system for assessing the fitness of bank notes, the system comprising:
a batch feed; a conveyer proximate the batch feed for moving notes from the batch feed; a plurality of sort bins proximate the conveyer for receiving notes; a control system; a plurality of illumination sources coupled to the control system and proximate the conveyer, wherein the plurality of illumination sources includes at least two different wavelengths of electromagnetic radiation; a line scan camera proximate the conveyer and coupled to the control system for capturing images in greyscale; and the control system including a memory and a processor, wherein the memory and processor are operable to perform the following steps:
activate the plurality of illumination sources in a predetermined order, anduse the line scan camera to capture image data associated with the predetermined order and saving the image data in memory, wherein the image data are captured at a same location on a note for each of the plurality of illumination sources.