I'm trying to apply OCR on a pdf to extract the text for which I'm following this post , for which I need to first convert pdf file to ppm format since we cannot apply OCR directly on a pdf file. But the first step itself is not happening So how do I convert pdf to ppm in order to do OCR on a pdf file. This is a post of mine where I get an error on first step itself. Any suggestion will be helpful. Thanks.
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If you want to extract the contents of a pdf in R, there are many other ways. – amrrs Sep 21 '17 at 06:06
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The pdf doesn't contain the plain text but it is OCR'd, that's the reason I'm not able to extract text from this OCR'd pdf – Andre_k Sep 21 '17 at 06:08