mirror/tesseract
1
0
Fork 0
mirror of https://github.com/tesseract-ocr/tesseract.git synced 2024-11-24 02:59:07 +08:00
Code Issues Actions 10 Packages Projects Releases Wiki Activity

Update documentation for unicharset_extractor

Browse Source
This commit is contained in:
Shree 2019-05-31 08:20:19 +00:00
parent 7d3e1324a8
commit 00abf57d02
1 changed files with 10 additions and 20 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

30
doc/unicharset_extractor.1.asc
View File

@ -3,38 +3,28 @@ UNICHARSET_EXTRACTOR(1)
NAME NAME
---- ----
unicharset_extractor - extract unicharset from Tesseract boxfiles unicharset_extractor - Reads box or plain text files to extract the unicharset.
SYNOPSIS SYNOPSIS
-------- --------
*unicharset_extractor* '[-D dir]' 'FILE'... *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 DESCRIPTION
----------- -----------
Tesseract needs to know the set of possible characters it can output. Tesseract needs to know the set of possible characters it can output.
To generate the unicharset data file, use the unicharset_extractor To generate the unicharset data file, use the unicharset_extractor
program on the same training pages bounding box files as used for program on training pages bounding box files or a plain text file:
clustering:
unicharset_extractor fontfile_1.box fontfile_2.box ... unicharset_extractor fontfile_1.box fontfile_2.box ...
The unicharset will be put into the file 'dir/unicharset', or simply The unicharset will be put into the file './unicharset' if no output filename is provided.
'./unicharset' if no output directory is provided.
Tesseract also needs to have access to character properties isalpha, *NOTE* Use the appropriate norm_mode based on the language.
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.
SEE ALSO SEE ALSO
-------- --------