What Is Optical Character Recognition (OCR)? - Lifewire
https://www.lifewire.com/optical-character-recognition-4158322
WebAug 31, 2021 · Optical Mark Recognition (OMR) is software that detects marks on paper, typically a bubble sheet. OMR is used to process the results of exams, surveys, questionnaires, and even elections. Unlike OCR, OMR cannot decipher the marks on the page, but only verify that the marks are there.
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