"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