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annotate mupdf-source/thirdparty/tesseract/doc/unicharset_extractor.1.asc @ 2:b50eed0cc0ef upstream

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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4. The directory name has changed: no version number in the expanded directory now.
author Franz Glasner <fzglas.hg@dom66.de>
date Mon, 15 Sep 2025 11:43:07 +0200
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b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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1 UNICHARSET_EXTRACTOR(1)
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2 =======================
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4 NAME
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5 ----
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6 unicharset_extractor - Reads box or plain text files to extract the unicharset.
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8 SYNOPSIS
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9 --------
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10 *unicharset_extractor* [--output_unicharset filename] [--norm_mode mode] box_or_text_file [...]
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12 Where mode means:
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13 1=combine graphemes (use for Latin and other simple scripts)
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14 2=split graphemes (use for Indic/Khmer/Myanmar)
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15 3=pure unicode (use for Arabic/Hebrew/Thai/Tibetan)
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17 DESCRIPTION
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18 -----------
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19 Tesseract needs to know the set of possible characters it can output.
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20 To generate the unicharset data file, use the unicharset_extractor
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21 program on training pages bounding box files or a plain text file:
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23 unicharset_extractor fontfile_1.box fontfile_2.box ...
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25 The unicharset will be put into the file './unicharset' if no output filename is provided.
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27 *NOTE* Use the appropriate norm_mode based on the language.
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29 SEE ALSO
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30 --------
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31 tesseract(1), unicharset(5)
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33 <https://tesseract-ocr.github.io/tessdoc/Training-Tesseract.html>
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35 HISTORY
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36 -------
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37 unicharset_extractor first appeared in Tesseract 2.00.
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39 COPYING
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40 -------
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41 Copyright \(C) 2006, Google Inc.
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42 Licensed under the Apache License, Version 2.0
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44 AUTHOR
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45 ------
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46 The Tesseract OCR engine was written by Ray Smith and his research groups
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47 at Hewlett Packard (1985-1995) and Google (2006-2018).