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2. Copyfish - Wikipedia

   en.wikipedia.org/wiki/Copyfish

   After a user marks the text in an image, Copyfish extracts it from a website, video or PDF document. [3] [4] Copyfish was first published in October 2015.

3. Intelligent character recognition - Wikipedia

   en.wikipedia.org/wiki/Intelligent_character...

   Intelligent character recognition (ICR) is used to extract handwritten text from images. It is a more sophisticated type of OCR technology that recognizes different handwriting styles and fonts to intelligently interpret data on forms and physical documents. [1]

4. Optical character recognition - Wikipedia

   en.wikipedia.org/wiki/Optical_character_recognition

   Video of the process of scanning and real-time optical character recognition (OCR) with a portable scanner. Optical character recognition or optical character reader (OCR) is the electronic or mechanical conversion of images of typed, handwritten or printed text into machine-encoded text, whether from a scanned document, a photo of a document, a scene photo (for example the text on signs and ...

5. Tesseract (software) - Wikipedia

   en.wikipedia.org/wiki/Tesseract_(software)

   Tesseract is an optical character recognition engine for various operating systems. [5] It is free software, released under the Apache License. [1] [6] [7] Originally developed by Hewlett-Packard as proprietary software in the 1980s, it was released as open source in 2005 and development was sponsored by Google in 2006.

6. OCRopus - Wikipedia

   en.wikipedia.org/wiki/OCRopus

   OCRopus can be used from the command line. Once installed, it can be invoked by specifying the input images. It will output the recognized text to standard output directly or write it as hOCR (HTML-based) code into files, from which it then can be transformed to a searchable PDF. If more precise control is needed, options can be specified on ...

7. List of PDF software - Wikipedia

   en.wikipedia.org/wiki/List_of_PDF_software

   Extracting embedded text is a common feature, ... Supports OCR and export of PDF text and images. Sumatra PDF: A free (GPL), open source PDF reader based on MuPDF. It ...