(Optical Character Recognition) The machine recognition of printed characters. OCR systems can recognize many different OCR fonts, as well as typewriter and computer-printed characters. Advanced OCR systems can recognize hand printing.
When a text document is scanned into the computer, it is turned into a bitmap, which is a picture of the text. OCR software analyzes the light and dark areas of the bitmap in order to identify each alphabetic letter and numeric digit. When it recognizes a character, it converts it into ASCII text. Hand printing is much more difficult to analyze than machine-printed characters. Old, worn and smudged documents are also difficult. Scanning documents and processing them with OCR is sometimes as much an art as it is a science.
OCR Machines
The "football field-long" machine (top) from Recognition Equipment, Inc. was used in the 1970s to process checks and credit card slips. The machine at the bottom is a contemporary unit. Both machines can handle OCR and MICR processing. (Images courtesy of BancTec, Inc.)
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