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I am looking for a OCR app to covert PDF or graphic to text, by reliable I mean it will not crash or hang easily, I tried LIOS it worked but took forever to read a page, and sometimes it just seems loop reading never finish, so I want another one that actually work, regardless of accuracy of the recognition, any idea ?
However, if you have an un-encrypted PDF, there might be tools which can extract the text out of that file. (Essentially, PDF is a page-description language which tells the printer or display how to "draw" the text, and it customarily does so through actual (Unicode) text with reference to fonts that may or may not be embedded in the PDF. You wouldn't have to OCR it, because the text is actually in there ... as text.
(But PDFs can also contain raster images of pages – bitmaps.)
Last edited by sundialsvcs; 03-02-2018 at 07:10 AM.
However, if you have an un-encrypted PDF, there might be tools which can extract the text out of that file. (Essentially, PDF is a page-description language which tells the printer or display how to "draw" the text, and it customarily does so through actual (Unicode) text with reference to fonts that may or may not be embedded in the PDF. You wouldn't have to OCR it, because the text is actually in there ... as text.
(But PDFs can also contain raster images of pages – bitmaps.)
Indeed, but THAT can be a thorny issue too. Multi-column text is....interesting...to try to deal with. The software doesn't delineate between a space, or a column-break, in most cases. You *CAN* monkey with things, but your mileage may vary.
If there is any text embedded in the PDF I would not have asked that question, it is purely graphics.
Quote:
Originally Posted by sundialsvcs
I agree that OCR usually does not work very well.
However, if you have an un-encrypted PDF, there might be tools which can extract the text out of that file. (Essentially, PDF is a page-description language which tells the printer or display how to "draw" the text, and it customarily does so through actual (Unicode) text with reference to fonts that may or may not be embedded in the PDF. You wouldn't have to OCR it, because the text is actually in there ... as text.
(But PDFs can also contain raster images of pages – bitmaps.)
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