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://github.com/tesseract-ocr/tesseract/wiki/TrainingTesseract

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).

                                            02/09/2022                    UNICHARSET_EXTRACTOR(1)