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comparison mupdf-source/thirdparty/tesseract/doc/combine_lang_model.1.asc @ 2:b50eed0cc0ef upstream
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| author | Franz Glasner <fzglas.hg@dom66.de> |
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| date | Mon, 15 Sep 2025 11:43:07 +0200 |
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| 1 COMBINE_LANG_MODEL(1) | |
| 2 ===================== | |
| 3 :doctype: manpage | |
| 4 | |
| 5 NAME | |
| 6 ---- | |
| 7 combine_lang_model - generate starter traineddata | |
| 8 | |
| 9 SYNOPSIS | |
| 10 -------- | |
| 11 *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] | |
| 12 | |
| 13 DESCRIPTION | |
| 14 ----------- | |
| 15 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). | |
| 16 | |
| 17 OPTIONS | |
| 18 ------- | |
| 19 '--lang lang':: | |
| 20 The language to use. | |
| 21 Tesseract uses 3-character ISO 639-2 language codes. (See LANGUAGES) | |
| 22 | |
| 23 '--script_dir PATH':: | |
| 24 Directory name for input script unicharsets. It should point to the location of langdata (github repo) directory. (type:string default:) | |
| 25 | |
| 26 '--input_unicharset FILE':: | |
| 27 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:) | |
| 28 | |
| 29 '--lang_is_rtl BOOL':: | |
| 30 True if language being processed is written right-to-left (eg Arabic/Hebrew). (type:bool default:false) | |
| 31 | |
| 32 '--pass_through_recoder BOOL':: | |
| 33 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) | |
| 34 | |
| 35 '--version_str STRING':: | |
| 36 An arbitrary version label to add to traineddata file (type:string default:) | |
| 37 | |
| 38 '--words FILE':: | |
| 39 (Optional) File listing words to use for the system dictionary (type:string default:) | |
| 40 | |
| 41 '--numbers FILE':: | |
| 42 (Optional) File listing number patterns (type:string default:) | |
| 43 | |
| 44 '--puncs FILE':: | |
| 45 (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:) | |
| 46 | |
| 47 '--output_dir PATH':: | |
| 48 Root directory for output files. Output files will be written to <output_dir>/<lang>/<lang>.* (type:string default:) | |
| 49 | |
| 50 HISTORY | |
| 51 ------- | |
| 52 combine_lang_model(1) was first made available for tesseract4.00.00alpha. | |
| 53 | |
| 54 RESOURCES | |
| 55 --------- | |
| 56 Main web site: <https://github.com/tesseract-ocr> + | |
| 57 Information on training tesseract LSTM: <https://tesseract-ocr.github.io/tessdoc/TrainingTesseract-4.00.html> | |
| 58 | |
| 59 SEE ALSO | |
| 60 -------- | |
| 61 tesseract(1) | |
| 62 | |
| 63 COPYING | |
| 64 ------- | |
| 65 Copyright \(C) 2012 Google, Inc. | |
| 66 Licensed under the Apache License, Version 2.0 | |
| 67 | |
| 68 AUTHOR | |
| 69 ------ | |
| 70 The Tesseract OCR engine was written by Ray Smith and his research groups | |
| 71 at Hewlett Packard (1985-1995) and Google (2006-2018). |