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DOCUMENT IMAGING
1. Introduction
Dr. Eugene Ageenko


  1. Introduction (this document)
  2. Document Imaging Applications (next page)

1. What is this all about? (Introduction to Document Imaging)

There exist over a trillion paper documents in the world and the quantity is doubled every three years. The current industry is oriented to produce and reproduce paper documents, and it does it faster than the papers can be digitized. Document Imaging (DI) aims at stopping (or at least slowing down) the growth of the paper piles and substitutes for paper in storing and accessing information. DI provides easy access to the electronic replicas of documents and less storage cost.

Using Optical Character Recognition (OCR) and Raster to Vector Conversion (RVC) it became possible to convert the content of a document to standard text or CAD/CAM format so that it can be manipulated as had been typed in or drawn manually. However, at the current state of technology, the high error rate and complexity of the OCR and RVC systems prevent from the successful application in most situations. The legal requirements and other needs also oblige to preserve documents in exact visual forms as they were produced. Therefore it exists a need to store digitized documents as compressed raster graphic, and apply OCR and RVC on-demand.

Document Imaging refers to the management of paper documents, records, forms by capturing, indexing, archiving, retrieving, and distributing them electronically. Document images are exact digitized replica of the original documents and allow document preservation. They are superior to paper documents because they can be economically stored, efficiently searched and browsed, quickly transmitted, and coherently linked together. The documents can be remotely retrieved by multiple users and manipulated using existing information technology. Moreover, unlimited number of hard copy printouts can be made for the convenience of the users.


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Updated: 2005   © Eugene Ageenko