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So my username is a little less ridiculous than I originally thought? :) The fact that this can introduce OCR bugs into your C code is hilarious, and this is d

So my username is a little less ridiculous than I originally thought? :) The fact that this can introduce OCR bugs into your C code is hilarious, and this is diabolical: #define one ( 4 - 3 ) #define eleven ( 3 + 4 + 4 ) Source code is here https://github.com/lexbailey/compilerfax https://github.com/lexbailey/compilerfax

lupire 2y ago
Need a proper preprocessor to take a code file and make it OCR-safe by substituting for dangerously glyphs.
- simcop2387 2y ago
  This might be a good reason to support trigraphs again! https://en.wikipedia.org/wiki/Digraphs_and_trigraphs_(programming)#C++ https://en.wikipedia.org/wiki/Digraphs_and_trigraphs_(progra... edit: fixed link, copy paste fail dropped the ++
deepspace 2y ago
> OCR bugs Especially if your fax machine uses JBIG2 compression. See: https://googleprojectzero.blogspot.com/2021/12/a-deep-dive-into-nso-zero-click.html https://googleprojectzero.blogspot.com/2021/12/a-deep-dive-i...
- skitter 2y ago
  I think it's appropriate linking directly to Kriesel's blog¹ or his talk, as that's about the scanner creating fake data and not about rce. Though technically it too is not an OCR bug as there's no ocr in JBIG2. ¹: http://www.dkriesel.com/en/blog/2013/0802_xerox-workcentres_are_switching_written_numbers_when_scanning http://www.dkriesel.com/en/blog/2013/0802_xerox-workcentres_...
OnlyMortal 2y ago
Amateur! Use a barcode font!
- landgenoot 2y ago
  monospace font OCR-B
jabbany 2y ago
I wonder if OCR could be improved by adding a "language model" of sorts... Like, sure, maybe it's hard to tell apart a "1", "i", or "l" purely visually, but if you knew it was supposed to be code, I'd suspect one could significantly improve the recognition accuracy if the system just worked in the probability of each confusable option given the preceding (and following) text.
- playingalong 2y ago
  This would also have a higher risk of introducing some nasty, hard to spot errors. It's actually better for the compilation to fail than for the Clippy to make up something syntactically and compilation correct, but wrong.
  - eru 2y ago
    You might be right in a practical sense, but for an art project like this, maybe not?

lupire 2y ago

Need a proper preprocessor to take a code file and make it OCR-safe by substituting for dangerously glyphs.

simcop2387 2y ago
This might be a good reason to support trigraphs again! https://en.wikipedia.org/wiki/Digraphs_and_trigraphs_(programming)#C++ https://en.wikipedia.org/wiki/Digraphs_and_trigraphs_(progra... edit: fixed link, copy paste fail dropped the ++

deepspace 2y ago

> OCR bugs Especially if your fax machine uses JBIG2 compression. See: https://googleprojectzero.blogspot.com/2021/12/a-deep-dive-into-nso-zero-click.html https://googleprojectzero.blogspot.com/2021/12/a-deep-dive-i...

skitter 2y ago
I think it's appropriate linking directly to Kriesel's blog¹ or his talk, as that's about the scanner creating fake data and not about rce. Though technically it too is not an OCR bug as there's no ocr in JBIG2. ¹: http://www.dkriesel.com/en/blog/2013/0802_xerox-workcentres_are_switching_written_numbers_when_scanning http://www.dkriesel.com/en/blog/2013/0802_xerox-workcentres_...

OnlyMortal 2y ago

Amateur! Use a barcode font!

landgenoot 2y ago
monospace font OCR-B

jabbany 2y ago

I wonder if OCR could be improved by adding a "language model" of sorts... Like, sure, maybe it's hard to tell apart a "1", "i", or "l" purely visually, but if you knew it was supposed to be code, I'd suspect one could significantly improve the recognition accuracy if the system just worked in the probability of each confusable option given the preceding (and following) text.

playingalong 2y ago
This would also have a higher risk of introducing some nasty, hard to spot errors. It's actually better for the compilation to fail than for the Clippy to make up something syntactically and compilation correct, but wrong.
- eru 2y ago
  You might be right in a practical sense, but for an art project like this, maybe not?