.\" DO NOT MODIFY THIS FILE!  It was generated by help2man 1.46.1.
.TH OCRAD "1" "October 2014" "ocrad 0.24" "User Commands"
.SH NAME
ocrad \- command line text recognition tool
.SH SYNOPSIS
.B ocrad
[\fI\,options\/\fR] [\fI\,files\/\fR]
.SH 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.
.PP
Ocrad includes a layout analyser able to separate the columns or blocks
of text normally found on printed pages.
.SH OPTIONS
.TP
\fB\-h\fR, \fB\-\-help\fR
display this help and exit
.TP
\fB\-V\fR, \fB\-\-version\fR
output version information and exit
.TP
\fB\-a\fR, \fB\-\-append\fR
append text to output file
.TP
\fB\-c\fR, \fB\-\-charset=\fR<name>
try '\-\-charset=help' for a list of names
.TP
\fB\-e\fR, \fB\-\-filter=\fR<name>
try '\-\-filter=help' for a list of names
.TP
\fB\-f\fR, \fB\-\-force\fR
force overwrite of output file
.TP
\fB\-F\fR, \fB\-\-format=\fR<fmt>
output format (byte, utf8)
.TP
\fB\-i\fR, \fB\-\-invert\fR
invert image levels (white on black)
.TP
\fB\-l\fR, \fB\-\-layout\fR
perform layout analysis
.TP
\fB\-o\fR, \fB\-\-output=\fR<file>
place the output into <file>
.TP
\fB\-q\fR, \fB\-\-quiet\fR
suppress all messages
.TP
\fB\-s\fR, \fB\-\-scale\fR=\fI\,[\-]\/\fR<n>
scale input image by [1/]<n>
.TP
\fB\-t\fR, \fB\-\-transform=\fR<name>
try '\-\-transform=help' for a list of names
.TP
\fB\-T\fR, \fB\-\-threshold=\fR<n%>
threshold for binarization (0\-100%)
.TP
\fB\-u\fR, \fB\-\-cut=\fR<l,t,w,h>
cut input image by given rectangle
.TP
\fB\-v\fR, \fB\-\-verbose\fR
be verbose
.TP
\fB\-x\fR, \fB\-\-export=\fR<file>
export results in ORF format to <file>
.PP
If no files are specified, ocrad reads the image from standard input.
If the \fB\-o\fR option is not specified, ocrad sends text to standard output.
.PP
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.
.SH "REPORTING BUGS"
Report bugs to bug\-ocrad@gnu.org
.br
Ocrad home page: http://www.gnu.org/software/ocrad/ocrad.html
.br
General help using GNU software: http://www.gnu.org/gethelp
.SH COPYRIGHT
Copyright \(co 2014 Antonio Diaz Diaz.
License GPLv2+: GNU GPL version 2 or later <http://gnu.org/licenses/gpl.html>
.br
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
.SH "SEE ALSO"
The full documentation for
.B ocrad
is maintained as a Texinfo manual.  If the
.B info
and
.B ocrad
programs are properly installed at your site, the command
.IP
.B info ocrad
.PP
should give you access to the complete manual.