Okay, I got an idea while searching the IMSLP.

Is there a program that can automatically transcribe pdf files (or images) into MIDI, GPx or any tablature program?

Because that would be SO AWESOME!

I know something like this exists for words, a project with Google I think used scanned pictures of books to study what words were the most popular through history...

So the technology is there to do it, anyway.
Go and find a better one then lol, or stop being lazy and just type it in

There's probably others around but you have google at your disposal.