tesseract/doc/combine_lang_model.1.asc

72 lines
2.9 KiB
Plaintext
Raw Normal View History

COMBINE_LANG_MODEL(1)
=====================
:doctype: manpage
NAME
----
combine_lang_model - generate starter traineddata
SYNOPSIS
--------
*combine_lang_model* --input_unicharset 'filename' --script_dir 'dirname' --output_dir 'rootdir' --lang 'lang' [--lang_is_rtl] [pass_through_recoder] [--words file --puncs file --numbers file]
DESCRIPTION
-----------
combine_lang_model(1) generates a starter traineddata file that can be used to train an LSTM-based neural network model. It takes as input a unicharset and an optional set of wordlists. It eliminates the need to run set_unicharset_properties(1), wordlist2dawg(1), some non-existent binary to generate the recoder (unicode compressor), and finally combine_tessdata(1).
OPTIONS
-------
'-l lang'::
The language to use.
Tesseract uses 3-character ISO 639-2 language codes. (See LANGUAGES)
'--script_dir PATH'::
Directory name for input script unicharsets. It should point to the location of langdata (github repo) directory. (type:string default:)
'--input_unicharset FILE'::
Unicharset to complete and use in encoding. It can be a hand-created file with incomplete fields. Its basic and script properties will be set before it is used. (type:string default:)
'--lang_is_rtl BOOL'::
True if language being processed is written right-to-left (eg Arabic/Hebrew). (type:bool default:false)
'--pass_through_recoder BOOL'::
If true, the recoder is a simple pass-through of the unicharset. Otherwise, potentially a compression of it by encoding Hangul in Jamos, decomposing multi-unicode symbols into sequences of unicodes, and encoding Han using the data in the radical_table_data, which must be the content of the file: langdata/radical-stroke.txt. (type:bool default:false)
'--version_str STRING'::
An arbitrary version label to add to traineddata file (type:string default:)
'--words FILE'::
(Optional) File listing words to use for the system dictionary (type:string default:)
'--numbers FILE'::
(Optional) File listing number patterns (type:string default:)
'--puncs FILE'::
(Optional) File listing punctuation patterns. The words/puncs/numbers lists may be all empty. If any are non-empty then puncs must be non-empty. (type:string default:)
'--output_dir PATH'::
Root directory for output files. Output files will be written to <output_dir>/<lang>/<lang>.* (type:string default:)
HISTORY
-------
combine_lang_model(1) was first made available for tesseract4.00.00alpha.
RESOURCES
---------
Main web site: <https://github.com/tesseract-ocr> +
Information on training tesseract LSTM: <https://github.com/tesseract-ocr/tesseract/wiki/TrainingTesseract-4.00>
SEE ALSO
--------
tesseract(1)
COPYING
-------
Copyright \(C) 2012 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).