How to scan and OCR like a pro with open source tools
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With optical character recognition (OCR), you can scan the contents of a document into a single file of editable text. This article, which focuses on scanning books, describes the steps you need to take to prepare pages for optimal OCR results, and compares various free OCR tools to determine which is the best at extracting the text. First, fire up your distribution's package manager to fetch a few packages and dependencies. In Debian, the required packages are sane, sane-utils, imagemagick, unpaper, tesseract-ocr, and tesseract-ocr-eng. You may also install other language packs for Tesseract -- for example, I installed tesseract-ocr-deu for German text.
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