This is the command unicharset_extractor that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator
PROGRAM:
NAME
unicharset_extractor - extract unicharset from Tesseract boxfiles
SYNOPSIS
unicharset_extractor [-D dir] FILE...
DESCRIPTION
Tesseract needs to know the set of possible characters it can output. To generate the
unicharset data file, use the unicharset_extractor program on the same training pages
bounding box files as used for clustering:
unicharset_extractor fontfile_1.box fontfile_2.box ...
The unicharset will be put into the file dir/unicharset, or simply ./unicharset if no
output directory is provided.
Tesseract also needs to have access to character properties isalpha, isdigit, isupper,
islower, ispunctuation. all of this auxilury data and more is encoded in this file. (See
unicharset(5))
If your system supports the wctype functions, these values will be set automatically by
unicharset_extractor and there is no need to edit the unicharset file. On some older
systems (eg Windows 95), the unicharset file must be edited by hand to add these property
description codes.
NOTE The unicharset file must be regenerated whenever inttemp, normproto and pffmtable are
generated (i.e. they must all be recreated when the box file is changed) as they have to
be in sync. This is made easier than in previous versions by running unicharset_extractor
before mftraining and cntraining, and giving the unicharset to mftraining.
Use unicharset_extractor online using onworks.net services