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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