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How are documents captured? |
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The most common form of input to a document imaging system is scanned paper. This can be done in several ways. The document may be a single page or multi pages. Scanning is a process of converting a paper document into a series of ones and zeros that faithfully represent the original document. Automatic document feeders built into the scanner move pages in sequence to the scanner anywhere from 12 pages per minute to 100's of pages per minute. Scanners are rated by speed (pages per minute), resolution (lines per inch, e.g., 200, 300,400), format (color, grayscale, black/white), and page layout (double sided, single sided, standard, legal). The pages are converted by light from the pages falling on a sensor area that converts the image to electronic "ones" and "zeros". Several processes can then be added to scanners or their interfaces to enhance the scanned image. These process enhancements can include color dropout lamps, deskew, despeckle, continuous contrast adjustments, thresholds and bar code recognition. As each page is brought into the document management system it is indexed so it can be found again. It's like having a telephone book to link with your home address. We can identify your house with your name, street, etc. Alternatively, we can inventory the contents of your whole house and list the contents in a search table with key word values. The third method of indexing involves using a folder to group similar objects. In this way, all white houses are located in the same folder.
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