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OCRAD(1)			 User Commands			      OCRAD(1)

NAME
       ocrad - command line text recognition tool

SYNOPSIS
       ocrad [options] [files]

DESCRIPTION
       GNU  Ocrad is an	OCR (Optical Character Recognition) program 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) or
       UTF-8 formats. The pbm, pgm and ppm formats are collectively  known  as
       pnm.

       Ocrad includes a	layout analyser	able to	separate the columns or	blocks
       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.	 Merged,  very
       bold or very light (broken) characters are normally not recognized cor-
       rectly. Try to avoid them.

OPTIONS
       -h, --help
	      display this help	and exit

       -V, --version
	      output version information and exit

       -a, --append
	      append text to output file

       -c, --charset=<name>
	      try '--charset=help' for a list of names

       -e, --filter=<name>
	      try '--filter=help' for a	list of	names

       -E, --user-filter=<file>
	      user-defined filter, see manual for format

       -f, --force
	      force overwrite of output	file

       -F, --format=<fmt>
	      output format (byte, utf8)

       -i, --invert
	      invert image levels (white on black)

       -l, --layout
	      perform layout analysis

       -o, --output=<file>
	      place the	output into <file>

       -q, --quiet
	      suppress all messages

       -s, --scale=[-]<n>
	      scale input image	by [1/]<n>

       -t, --transform=<name>
	      try '--transform=help' for a list	of names

       -T, --threshold=<n%>
	      threshold	for binarization (0-100%)

       -u, --cut=<l,t,w,h>
	      cut input	image by given rectangle

       -v, --verbose
	      be verbose

       -x, --export=<file>
	      export results in	ORF format to <file>

       If no files are specified, ocrad	reads the image	from  standard	input.
       If the -o option	is not specified, ocrad	sends text to standard output.

       Exit  status:  0	 for a normal exit, 1 for environmental	problems (file
       not found, invalid flags, I/O errors, etc), 2 to	indicate a corrupt  or
       invalid input file, 3 for an internal consistency error (eg, bug) which
       caused ocrad to panic.

REPORTING BUGS
       Report bugs to bug-ocrad@gnu.org
       Ocrad home page:	http://www.gnu.org/software/ocrad/ocrad.html
       General help using GNU software:	http://www.gnu.org/gethelp

COPYRIGHT
       Copyright (C) 2019 Antonio Diaz Diaz.  License GPLv2+: GNU GPL  version
       2 or later <http://gnu.org/licenses/gpl.html>
       This  is	 free  software:  you  are free	to change and redistribute it.
       There is	NO WARRANTY, to	the extent permitted by	law.

SEE ALSO
       The full	documentation for ocrad	is maintained as a Texinfo manual.  If
       the  info  and  ocrad programs are properly installed at	your site, the
       command

	      info ocrad

       should give you access to the complete manual.

ocrad 0.27			 January 2019			      OCRAD(1)

NAME | SYNOPSIS | DESCRIPTION | OPTIONS | REPORTING BUGS | COPYRIGHT | SEE ALSO

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