RE: [Bug-ocrad] Re: Feature request: numeric charset

[Tobias Andersson]

> Yes, ocrad will have some day options like "--charset=numeric", or,

The quick-fix is of course to make a "soft sub" of the result if you know 
you can expect numeric characters only. Simply make a "search-and-replace" 
for common letters that you know should be digits: replace every I,l,i with 
1 (one), O,o,Q with 0 (zero) etc.

The best solution (I think) would be to introduce different classifiers in 
the rec. engine... but that's a project in the distance future I suppose...

/Tobias A



> From: Antonio Diaz Diaz <address@hidden>
> To: address@hidden
> CC: Manfred Schwarb <address@hidden>
> Subject: [Bug-ocrad] Re: Feature request: numeric charset
> Date: Wed, 08 Jun 2005 15:46:57 +0200
>
> Hello manfred.
>
> Yes, ocrad will have some day options like "--charset=numeric", or, for 
> texts without numbers, "--charset=alphabetic". Also an user-defined charset 
> will probably be implemented.
>
> Of course, it will be implemented sooner if someone offers to sponsor it. 
> ;-)
>
>
> Regards,
> Antonio.
>
>
> Manfred Schwarb wrote:
> > 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?
>
>
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