Reading information that people have marked on surveys, tests, and other paper documents are known as optical mark recognition. OMR is used to read multiple choice exam papers that have colored regions for the multiple choice questions.
What is OMR?

By recognizing specific markings on a document, optical mark recognition (OMR) is an electronic technique for collecting data that has been handled by a human. The optical mark recognition method is typically carried out with the use of a scanner that measures the light’s passage or reflection through the paper. Marked areas of the paper will reflect less light than unmarked areas, giving them a lower contrast reflectivity.
Optical mark reading is another name for optical mark identification, however, Scantron is the more well-known brand name.
FAQ
Ans. The full form of OMR is Optical Mark Recognition.
Ans. The majority of offices, academic institutions, and research divisions use OMR to process huge volumes of hand-filled documents like questionnaires, exams, reply cards, and votes. OMR has a 99.9% accuracy rate and can process hundreds of thousands of physical documents each hour.
Ans. Everett Franklin Lindquist created the first effective optical mark-sense scanner.
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