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Source code changes of the file "README" between
ocrad-0.24.tar.gz and ocrad-0.25.tar.gz

About: GNU Ocrad is an OCR (Optical Character Recognition) program.

README  (ocrad-0.24):README  (ocrad-0.25)
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GNU Ocrad is an OCR (Optical Character Recognition) program and library GNU Ocrad is an OCR (Optical Character Recognition) program and library
based on a feature extraction method. It reads images in pbm (bitmap), based on a feature extraction method. It reads images in pbm (bitmap),
pgm (greyscale) or ppm (color) formats and produces text in byte (8-bit) pgm (greyscale) or ppm (color) formats and produces text in byte (8-bit)
or UTF-8 formats. The pbm, pgm and ppm formats are collectively known as or UTF-8 formats. The pbm, pgm and ppm formats are collectively known as
pnm. pnm.
Ocrad includes a layout analyser able to separate the columns or blocks Ocrad includes a layout analyser able to separate the columns or blocks
of text normally found on printed pages. of text normally found on printed pages.
For best results the characters should be at least 20 pixels high. If
they are smaller, try the --scale option. Scanning the image at 300 dpi
usually produces a character size good enough for ocrad.
See the file INSTALL for compilation and installation instructions. See the file INSTALL for compilation and installation instructions.
Try "ocrad --help" for usage instructions. Try "ocrad --help" for usage instructions.
Caveats. Caveats.
For best results, the characters should be at least 20 pixels high. If
they are smaller, try the --scale option. Scanning the image at 300 dpi
usually produces a character size good enough for ocrad.
Merged characters are always a problem. Try to avoid them. Merged characters are always a problem. Try to avoid them.
Very bold or very light (broken) characters are also a problem. Very bold or very light (broken) characters are also a problem.
Always see with your own eyes the pnm file before blaming ocrad for the Always see with your own eyes the pnm file before blaming ocrad for the
results. Remember the saying, "garbage in, garbage out". results. Remember the saying, "garbage in, garbage out".
Ideas, comments, patches, donations (hardware, money, etc), etc, are welcome. Ideas, comments, patches, donations (hardware, money, etc), etc, are welcome.
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Debug levels ( option -D ) Debug levels ( option -D )
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88 - Show main black blocks from every character. 88 - Show main black blocks from every character.
87 - Show guess list for every character. 87 - Show guess list for every character.
86 - Show best guess for every character. 86 - Show best guess for every character.
80..85 - reserved. 80..85 - reserved.
78..79 - reserved. 78..79 - reserved.
7X - X = 0 Show page as bitmap. 7X - X = 0 Show page as bitmap.
X = 1 Show page as bitmap with marked zones. X = 1 Show page as bitmap with marked zones.
X = 2 Show page as bitmap with marked lines. X = 2 Show page as bitmap with marked lines.
X = 4 Show page as bitmap with marked characters. X = 4 Show page as bitmap with marked characters.
Copyright (C) 2003-2014 Antonio Diaz Diaz. Copyright (C) 2003-2015 Antonio Diaz Diaz.
This file is free documentation: you have unlimited permission to copy, This file is free documentation: you have unlimited permission to copy,
distribute and modify it. distribute and modify it.
The file Makefile.in is a data file used by configure to produce the The file Makefile.in is a data file used by configure to produce the
Makefile. It has the same copyright owner and permissions that configure Makefile. It has the same copyright owner and permissions that configure
itself. itself.
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