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How to convert PDF to (La)TeX?

Has anyone written a piece of code that (at least) tries to reconstruct (standard) LaTeX from a compiled PDF file? I mean, identifying indices and exponents, common fonts, footnotes, linebreaks should mostly be algorithmizable, if somewhat error-prone. Basically I am looking for an approximative section of the map pdflatex: tex → pdf which does most of the work, leaving maybe a few minor corrections (but not the whole design) to be done at hand.

No, I am not asking for an auto-plagiarizer tool. I am sure I am not the only one here with data loss issues...

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Thanks, can be closed probably. –  darij grinberg Sep 20 '11 at 2:09
    
While many users here are mathematicians there are many non-mathematicians here as well. Writing something like “section of the map pdflatex: tex → pdf” will probably not be universally understood and diminishes your chance of answers (also, we don't have any inline TeX renderer, hence my edit). –  Caramdir Sep 20 '11 at 2:11
    
If you want this for your own files because you have lost the source code somehow (as your last sentence suggests), you may want to have a look at Is there some way to embed LaTeX source code in a PDF file? to prevent this in the future. –  diabonas Sep 20 '11 at 9:56
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marked as duplicate by Jake, Caramdir, Alan Munn, lockstep, Joseph Wright Sep 20 '11 at 5:51

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1 Answer

Have a look at InfinityReader. It is designed to convert OCRed text to latex (and does a fairly good job at that). I don't know if it can directly read pdf files.

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