OCR is a subject of research in the fields of artificial intelligence, pattern recognition, and computer vision. OCR is widely used for data entry and machine processes such as text-to-speech, machine translation, cognitive computing, and text and data mining.

It converts images of typed, printed, or handwritten text into machine-encoded text, making it easier to edit, search, store, and display electronically. OCR, or optical character recognition, is a popular technology used for digitizing printed text records, such as invoices, bank statements, passport documents, business cards, and mail. This can be done by scanning a document, taking a photo of it, capturing text from a scene-photo (such as a picture of a sign or billboard), or extracting text from subtitle overlays on images (such as those used in television broadcasts). Optical character recognition (OCR) refers to the process of electronically or mechanically converting images of printed, handwritten, or typed text into machine-encoded text.

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