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From: Willem van der Walt <wvdwalt@CSIR.CO.ZA>
To: "Speakup is a screen review system for Linux." <speakup@braille.uwo.ca>
Subject: Re: converting graphics on a text console
Date: Tue, 31 Jul 2007 09:53:42 +0200 (SAST)	[thread overview]
Message-ID: <Pine.LNX.4.64.0707310949160.16895@localhost.localdomain> (raw)
In-Reply-To: <20070730192647.GA5840@cq.ftml.net>

Hi,
A few points.
1.  for OCR under linux, use tesseract and ocropus.
The results is a lot better than with gocr or ocrad.
2.  for converting images, use the convert command provided by the 
ImageMagic package.
Ocropus/tesseract is a little slow, but worth the effort to get going.
With convert, you can do a lot of other nice things on images like change 
them from collor to blak and white or change the contrast and so on.
HTH, Willem


On Mon, 30 Jul 2007, Chuck Hallenbeck wrote:

> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
> 
> Does anyone have any advice for me? I have a text-only system here, no
> X or Gnome. Someone scanned a document for me, and sent it as a pdf
> file. I use pdftotext of course, but evidently the pdf file contains
> only image data, so pdftottext just gave me garbage. Maybe. At least it
> looks like garbage.
> 
> So what now? I can use gocr or ocrad to try pulling text out of the
> image, except I somehow need to convert the image data in the pdf file
> to gif first. Has anyone done anything like this in a text console? I
> have successfully used OCR software on .gif files, but how do I get
> from pdf to gif? 
> 
> Man, it's tough persuading folks that an image of a document that
> appears perfectly readable on a graphics screen is not really text of
> the sort I can handle in a text console. 
> 
> Thanks for any advice.
> 
> Chuck
> 
> - -- 
> The Moon is Waning Gibbous (99% of Full)
> My new web site location is at: http://hallenbeck.ftml.net
>  The early bird may get the worm, but the second mouse gets the cheese.
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> 5uttsgVVghRt039ItY1zeko=
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> 
> _______________________________________________
> Speakup mailing list
> Speakup@braille.uwo.ca
> http://speech.braille.uwo.ca/mailman/listinfo/speakup
> 

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      parent reply	other threads:[~ UTC|newest]

Thread overview: 33+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
 Chuck Hallenbeck
 ` Alastair Irving
   ` Chuck Hallenbeck
 ` Janina Sajka
   ` Chuck Hallenbeck
     ` Janina Sajka
       ` Chuck Hallenbeck
         ` Janina Sajka
       ` no braille support in orca and fc7? marco.fisch
         ` Janina Sajka
           ` Antwort: " marco.fisch
             ` Janina Sajka
               ` Samuel Thibault
                 ` Antwort: " marco.fisch
                   ` Janina Sajka
                     ` Antwort: " marco.fisch
                       ` Janina Sajka
                         ` Antwort: Re: Antwort: Re: Antwort: Re: no braille support inorca " Michael Whapples
                         ` How different is Speakup from JAWS Charlie Young
                           ` Kenny Hitt
                           ` Glenn Ervin
                           ` Cody Hurst
                             ` John Heim
                             ` how diffecult is it to configure Linux to surf the web Charlie Young
                               ` Willem van der Walt
                                 ` Samuel Thibault
                                   ` Is there a cd burner I could download for windows that would make burning a copy of linux simple Charlie Young
                                     ` Jim Grimsby Jr.
                                     ` Is there a cd burner I could download for windows that would makeburning " John Heim
                                       ` I just tried to install Ubuntu from a disk and I am not having any luch Charlie Young
           ` no braille support in orca and fc7? Georgina Joyce
 ` converting graphics on a text console Glenn Ervin
 ` Willem van der Walt [this message]

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