combine_lang_model(1)

1COMBINE_LANG_MODEL(1)                                    COMBINE_LANG_MODEL(1)
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NAME

6       combine_lang_model - generate starter traineddata
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SYNOPSIS

9       combine_lang_model --input_unicharset filename --script_dir dirname
10       --output_dir rootdir --lang lang [--lang_is_rtl] [pass_through_recoder]
11       [--words file --puncs file --numbers file]
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DESCRIPTION

14       combine_lang_model(1) generates a starter traineddata file that can be
15       used to train an LSTM-based neural network model. It takes as input a
16       unicharset and an optional set of wordlists. It eliminates the need to
17       run set_unicharset_properties(1), wordlist2dawg(1), some non-existent
18       binary to generate the recoder (unicode compressor), and finally
19       combine_tessdata(1).
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OPTIONS

22       --lang lang
23           The language to use. Tesseract uses 3-character ISO 639-2 language
24           codes. (See LANGUAGES)
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26       --script_dir PATH
27           Directory name for input script unicharsets. It should point to the
28           location of langdata (github repo) directory. (type:string
29           default:)
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31       --input_unicharset FILE
32           Unicharset to complete and use in encoding. It can be a
33           hand-created file with incomplete fields. Its basic and script
34           properties will be set before it is used. (type:string default:)
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36       --lang_is_rtl BOOL
37           True if language being processed is written right-to-left (eg
38           Arabic/Hebrew). (type:bool default:false)
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40       --pass_through_recoder BOOL
41           If true, the recoder is a simple pass-through of the unicharset.
42           Otherwise, potentially a compression of it by encoding Hangul in
43           Jamos, decomposing multi-unicode symbols into sequences of
44           unicodes, and encoding Han using the data in the
45           radical_table_data, which must be the content of the file:
46           langdata/radical-stroke.txt. (type:bool default:false)
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48       --version_str STRING
49           An arbitrary version label to add to traineddata file (type:string
50           default:)
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52       --words FILE
53           (Optional) File listing words to use for the system dictionary
54           (type:string default:)
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56       --numbers FILE
57           (Optional) File listing number patterns (type:string default:)
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59       --puncs FILE
60           (Optional) File listing punctuation patterns. The
61           words/puncs/numbers lists may be all empty. If any are non-empty
62           then puncs must be non-empty. (type:string default:)
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64       --output_dir PATH
65           Root directory for output files. Output files will be written to
66           <output_dir>/<lang>/<lang>.* (type:string default:)
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HISTORY

69       combine_lang_model(1) was first made available for
70       tesseract4.00.00alpha.
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RESOURCES

73       Main web site: https://github.com/tesseract-ocr Information on training
74       tesseract LSTM:
75       https://tesseract-ocr.github.io/tessdoc/TrainingTesseract-4.00.html
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COPYING

81       Copyright (C) 2012 Google, Inc. Licensed under the Apache License,
82       Version 2.0
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AUTHOR

85       The Tesseract OCR engine was written by Ray Smith and his research
86       groups at Hewlett Packard (1985-1995) and Google (2006-present).
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90                                  02/25/2022             COMBINE_LANG_MODEL(1)