1UNICHARSET_EXTRACTOR(1)
2=======================
3
4NAME
5----
6unicharset_extractor - Reads box or plain text files to extract the unicharset.
7
8SYNOPSIS
9--------
10*unicharset_extractor*  [--output_unicharset filename] [--norm_mode mode] box_or_text_file [...]
11
12Where mode means:
13 1=combine graphemes (use for Latin and other simple scripts)
14 2=split graphemes (use for Indic/Khmer/Myanmar)
15 3=pure unicode (use for Arabic/Hebrew/Thai/Tibetan)
16
17DESCRIPTION
18-----------
19Tesseract needs to know the set of possible characters it can output.
20To generate the unicharset data file, use the unicharset_extractor
21program on training pages bounding box files or a plain text file:
22
23    unicharset_extractor fontfile_1.box fontfile_2.box ...
24
25The unicharset will be put into the file './unicharset' if no output filename is provided.
26
27*NOTE* Use the appropriate norm_mode based on the language.
28
29SEE ALSO
30--------
31tesseract(1), unicharset(5)
32
33<https://tesseract-ocr.github.io/tessdoc/Training-Tesseract.html>
34
35HISTORY
36-------
37unicharset_extractor first appeared in Tesseract 2.00.
38
39COPYING
40-------
41Copyright \(C) 2006, Google Inc.
42Licensed under the Apache License, Version 2.0
43
44AUTHOR
45------
46The Tesseract OCR engine was written by Ray Smith and his research groups
47at Hewlett Packard (1985-1995) and Google (2006-present).
48