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Does anyone know of any free/open-source text recognition libraries in C/C++/Objective-C? Basically something that can scan an image, and read out all of the plain text.
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Tesseract is an open source optical character recognition (OCR) platform. OCR extracts text from images and documents without a text layer and outputs the document into a new searchable text file, PDF, or most other popular formats.
Tesseract is an optical character recognition engine for various operating systems. It is free software, released under the Apache License.
Tesseract. Tesseract is a free and open source command line OCR engine that was developed at Hewlett-Packard in the mid 80s, and has been maintained by Google since 2006. It is well documented. Tesseract is written in C/C++.
Tesseract is an open-source OCR engine that was developed at HP between 1984 and 1994.
The most famous one is Tesseract OCR developed initially by Motorola and later become open source. It is also promoted by Google.
There are a few more, perhaps not as famous as Tesseract: http://en.wikipedia.org/wiki/OCRopus http://jocr.sourceforge.net/
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