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Optical character recognition is an uphill battle for open source (NewsForge)
NewsForge looks
at optical character recognition (OCR) software. " If you use
Linux, or another free operating system, and need optical character
recognition (OCR) software, be prepared for a challenge. OCR is a tricky
problem on any computing platform -- both because it is conceptually hard,
and because the task does not lend itself to simple, easy-to-use
interfaces. OCR is the use of visual pattern matching to extract text from
an image -- usually a scanned paper document, but it could be a digital
photo, a frame of video, or a screenshot just as easily."
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