GOCR
gocr - command line OCR tool
SYNOPSIS
gocr
[IOPTION] [-i] pnm file
DESCRIPTION
gocr is an optical character recognition program that can be used from the command line.  It takes input in PNM, PGM, PBM, PPM, or PCX format, and writes recognized text to stdout.  If the pnm
file is a single dash, PNM data is read from stdin.
If gzip, bzip2 and netpbm-progs are installed and your system supports popen also pnm.gz, pnm.bz2, png, jpg, jpeg, tiff, gif, bmp, ps (only single pages) and eps are supported as input files (not as input stream), where pnm can be replaced by one of ppm, pgm and pbm.
OPTIONS

-h
show usage information

-i file
read input from file (or stdin if file is a single
dash)

-o file
send output to file instead of stdout

-e file
send errors to file instead of stderr or to stdout
if file is a dash

-x file
progress output to file
(file can be a file name, a fifo name or a file descriptor 1...255)

-p path
database path (including final slash, default is ./db/)

-f format
output format(ISO8859_1 TeX HTML UTF8 ASCII)

-l level
set grey level to level (0<160<=255, default:0 for autodetect)

-d size
set dust size in pixels (clusters smaller than this are removed),
0 means no clusters are removed, the default is -1 for auto detection

-s num
set spacewidth/dots (default: 0 for autodetect)

-v verbosity
be verbose; verbosity is a bitfield

-c string
only verbose output of characters from string

-C string
only recognise characters from string

-m modes
set operation modes; modes is a bitfield

-n bool
if bool is non-zero, only recognise numbers
(this is now obsolete, use -C "0123456789")

The verbosity is specified as a bitfield:
1
print more info
2
list shapes of boxes (see -c)
4
list pattern of boxes (see -c)
8
print pattern after recognition
16
print line information
32
create outXX.pgm

The operation modes are:
2
use database (early development)
4
layout analysis, zoning (development)
8
don't compare unrecognized characters
16
don't divide overlapping characters
32
don't do context correction
64
character packing (development)
130
extend database, prompts user (128+2, early development)
256
switch off the OCR engine (makes sense together with -m 2)

AUTHOR
Joerg Schulenburg <jschulen@gmx.de>

First version of man page by Tim Waugh <twaugh@redhat.com>
VERSION INFORMATION
This man page documents gocr, version 0.37.
REPORTING BUGS
Report bugs to <jschulen@gmx.de>
SEE ALSO
More details can be found at /usr/share/doc/gocr-X.XX/gocr.html.
EXAMPLES

gocr -v 33 text1.pbm
output verbose information, out30.bmp is created to see details of
recognition process

gocr -v 7 -c _YV text1.pbm
verbose output for unknown chars and chars Y and V

djpeg -pnm -gray text.jpg | gocr -
convert a jpeg file to pnm format and input via pipe