Optical Mark Recognition

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Optical Mark Recognition ( OMR ) is a technique for computer-aided recognition of marks on paper, similar to text recognition ( Optical Character Recognition or OCR ). OMR is often used for the automatic evaluation of forms such as multiple choice tests or ballot papers . Modern inserting machines also require OMR codes on the letters for control. In addition to conventional OMR codes (bar codes or control characters - they usually take place between the filing holes of documents) are now also barcodes and Data Matrix codes used. This code is also called OME (optical feature recognition).