Image Scanners And Forms Scanners
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Types of Scanners There are two basic types of scanners: a forms scanner and an image scanner. A forms scanner will scan bubble sheets and other forms with markings on them. Some forms used in education are grading sheets, attendance sheets, and answer sheets to standardized tests. A forms scanner will scan (look at) the marks made on the form and enter the data into the computer. An image scanner will take any drawing or photograph and make a picture of it, changing that picture into a computer file which can be used in a word processor or a desktop publishing program. If you have a page of text, you can scan it in an image scanner (which takes of picture of the page) then run it through a computer program called OCR (optical character recognition) to change it into text. OCR programs are about 90-95% accurate in being able to take a picture of a word and change it into the actual word. As such, OCR programs appear to "read" the words in the picture. |
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