[Bug-ocrad] Freature request: numeric charset

[Manfred Schwarb]

Hi Antonio,

trying to recognize numbers in tables, I stumbled across
the usual OCR hassle:
Zero is recognized as "O" or "o", One is recognized as 
lowercase "L" or uppercase "i".
I think ocrad is doing it's best, and the results are great.
Nevertheless there are such mis-recognitions, inevitable, I think.

This could be avoided it there is a "--charset=numbers" or similar,
which restricts the charset to [0123456789], and perhaps [+-].

Alternatively, one could even think of an option
  --charset="0123456789", i.e. a list of characters out of the
ascii character set.

What do you think?

Regards,
Manfred



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