UNICHARSET_EXTRACTOR(1)
=======================

NAME
----
unicharset_extractor - Reads box or plain text files to extract the unicharset.

SYNOPSIS
--------
*unicharset_extractor*  [--output_unicharset filename] [--norm_mode mode] box_or_text_file [...]

Where mode means:
 1=combine graphemes (use for Latin and other simple scripts)
 2=split graphemes (use for Indic/Khmer/Myanmar)
 3=pure unicode (use for Arabic/Hebrew/Thai/Tibetan)

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 training pages bounding box files or a plain text file:

    unicharset_extractor fontfile_1.box fontfile_2.box ...

The unicharset will be put into the file './unicharset' if no output filename is provided.

*NOTE* Use the appropriate norm_mode based on the language.

SEE ALSO
--------
tesseract(1), unicharset(5)

<https://tesseract-ocr.github.io/tessdoc/Training-Tesseract.html>

HISTORY
-------
unicharset_extractor first appeared in Tesseract 2.00.

COPYING
-------
Copyright \(C) 2006, Google Inc.
Licensed under the Apache License, Version 2.0

AUTHOR
------
The Tesseract OCR engine was written by Ray Smith and his research groups
at Hewlett Packard (1985-1995) and Google (2006-present).