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| <body class="article"> | |
| <div id="header"> | |
| <h1>COMBINE_TESSDATA(1)</h1> | |
| </div> | |
| <div id="content"> | |
| <div class="sect1"> | |
| <h2 id="_name">NAME</h2> | |
| <div class="sectionbody"> | |
| <div class="paragraph"><p>combine_tessdata - combine/extract/overwrite/list/compact Tesseract data</p></div> | |
| </div> | |
| </div> | |
| <div class="sect1"> | |
| <h2 id="_synopsis">SYNOPSIS</h2> | |
| <div class="sectionbody"> | |
| <div class="paragraph"><p><strong>combine_tessdata</strong> [<em>OPTION</em>] <em>FILE</em>…</p></div> | |
| </div> | |
| </div> | |
| <div class="sect1"> | |
| <h2 id="_description">DESCRIPTION</h2> | |
| <div class="sectionbody"> | |
| <div class="paragraph"><p>combine_tessdata(1) is the main program to combine/extract/overwrite/list/compact | |
| tessdata components in [lang].traineddata files.</p></div> | |
| <div class="paragraph"><p>To combine all the individual tessdata components (unicharset, DAWGs, | |
| classifier templates, ambiguities, language configs) located at, say, | |
| /home/$USER/temp/eng.* run:</p></div> | |
| <div class="literalblock"> | |
| <div class="content monospaced"> | |
| <pre>combine_tessdata /home/$USER/temp/eng.</pre> | |
| </div></div> | |
| <div class="paragraph"><p>The result will be a combined tessdata file /home/$USER/temp/eng.traineddata</p></div> | |
| <div class="paragraph"><p>Specify option -e if you would like to extract individual components | |
| from a combined traineddata file. For example, to extract language config | |
| file and the unicharset from tessdata/eng.traineddata run:</p></div> | |
| <div class="literalblock"> | |
| <div class="content monospaced"> | |
| <pre>combine_tessdata -e tessdata/eng.traineddata \ | |
| /home/$USER/temp/eng.config /home/$USER/temp/eng.unicharset</pre> | |
| </div></div> | |
| <div class="paragraph"><p>The desired config file and unicharset will be written to | |
| /home/$USER/temp/eng.config /home/$USER/temp/eng.unicharset</p></div> | |
| <div class="paragraph"><p>Specify option -o to overwrite individual components of the given | |
| [lang].traineddata file. For example, to overwrite language config | |
| and unichar ambiguities files in tessdata/eng.traineddata use:</p></div> | |
| <div class="literalblock"> | |
| <div class="content monospaced"> | |
| <pre>combine_tessdata -o tessdata/eng.traineddata \ | |
| /home/$USER/temp/eng.config /home/$USER/temp/eng.unicharambigs</pre> | |
| </div></div> | |
| <div class="paragraph"><p>As a result, tessdata/eng.traineddata will contain the new language config | |
| and unichar ambigs, plus all the original DAWGs, classifier templates, etc.</p></div> | |
| <div class="paragraph"><p>Note: the file names of the files to extract to and to overwrite from should | |
| have the appropriate file suffixes (extensions) indicating their tessdata | |
| component type (.unicharset for the unicharset, .unicharambigs for unichar | |
| ambigs, etc). See k*FileSuffix variable in ccutil/tessdatamanager.h.</p></div> | |
| <div class="paragraph"><p>Specify option -u to unpack all the components to the specified path:</p></div> | |
| <div class="literalblock"> | |
| <div class="content monospaced"> | |
| <pre>combine_tessdata -u tessdata/eng.traineddata /home/$USER/temp/eng.</pre> | |
| </div></div> | |
| <div class="paragraph"><p>This will create /home/$USER/temp/eng.* files with individual tessdata | |
| components from tessdata/eng.traineddata.</p></div> | |
| </div> | |
| </div> | |
| <div class="sect1"> | |
| <h2 id="_options">OPTIONS</h2> | |
| <div class="sectionbody"> | |
| <div class="paragraph"><p><strong>-c</strong> <em>.traineddata</em> <em>FILE</em>…: | |
| Compacts the LSTM component in the .traineddata file to int.</p></div> | |
| <div class="paragraph"><p><strong>-d</strong> <em>.traineddata</em> <em>FILE</em>…: | |
| Lists directory of components from the .traineddata file.</p></div> | |
| <div class="paragraph"><p><strong>-e</strong> <em>.traineddata</em> <em>FILE</em>…: | |
| Extracts the specified components from the .traineddata file</p></div> | |
| <div class="paragraph"><p><strong>-l</strong> <em>.traineddata</em> <em>FILE</em>…: | |
| List the network information.</p></div> | |
| <div class="paragraph"><p><strong>-o</strong> <em>.traineddata</em> <em>FILE</em>…: | |
| Overwrites the specified components of the .traineddata file | |
| with those provided on the command line.</p></div> | |
| <div class="paragraph"><p><strong>-u</strong> <em>.traineddata</em> <em>PATHPREFIX</em> | |
| Unpacks the .traineddata using the provided prefix.</p></div> | |
| </div> | |
| </div> | |
| <div class="sect1"> | |
| <h2 id="_caveats">CAVEATS</h2> | |
| <div class="sectionbody"> | |
| <div class="paragraph"><p><em>Prefix</em> refers to the full file prefix, including period (.)</p></div> | |
| </div> | |
| </div> | |
| <div class="sect1"> | |
| <h2 id="_components">COMPONENTS</h2> | |
| <div class="sectionbody"> | |
| <div class="paragraph"><p>The components in a Tesseract lang.traineddata file as of | |
| Tesseract 4.0 are briefly described below; For more information on | |
| many of these files, see | |
| <a href="https://tesseract-ocr.github.io/tessdoc/Training-Tesseract.html">https://tesseract-ocr.github.io/tessdoc/Training-Tesseract.html</a> | |
| and | |
| <a href="https://tesseract-ocr.github.io/tessdoc/TrainingTesseract-4.00.html">https://tesseract-ocr.github.io/tessdoc/TrainingTesseract-4.00.html</a></p></div> | |
| <div class="dlist"><dl> | |
| <dt class="hdlist1"> | |
| lang.config | |
| </dt> | |
| <dd> | |
| <p> | |
| (Optional) Language-specific overrides to default config variables. | |
| For 4.0 traineddata files, lang.config provides control parameters which | |
| can affect layout analysis, and sub-languages. | |
| </p> | |
| </dd> | |
| <dt class="hdlist1"> | |
| lang.unicharset | |
| </dt> | |
| <dd> | |
| <p> | |
| (Required - 3.0x legacy tesseract) The list of symbols that Tesseract recognizes, with properties. | |
| See unicharset(5). | |
| </p> | |
| </dd> | |
| <dt class="hdlist1"> | |
| lang.unicharambigs | |
| </dt> | |
| <dd> | |
| <p> | |
| (Optional - 3.0x legacy tesseract) This file contains information on pairs of recognized symbols | |
| which are often confused. For example, <em>rn</em> and <em>m</em>. | |
| </p> | |
| </dd> | |
| <dt class="hdlist1"> | |
| lang.inttemp | |
| </dt> | |
| <dd> | |
| <p> | |
| (Required - 3.0x legacy tesseract) Character shape templates for each unichar. Produced by | |
| mftraining(1). | |
| </p> | |
| </dd> | |
| <dt class="hdlist1"> | |
| lang.pffmtable | |
| </dt> | |
| <dd> | |
| <p> | |
| (Required - 3.0x legacy tesseract) The number of features expected for each unichar. | |
| Produced by mftraining(1) from <strong>.tr</strong> files. | |
| </p> | |
| </dd> | |
| <dt class="hdlist1"> | |
| lang.normproto | |
| </dt> | |
| <dd> | |
| <p> | |
| (Required - 3.0x legacy tesseract) Character normalization prototypes generated by cntraining(1) | |
| from <strong>.tr</strong> files. | |
| </p> | |
| </dd> | |
| <dt class="hdlist1"> | |
| lang.punc-dawg | |
| </dt> | |
| <dd> | |
| <p> | |
| (Optional - 3.0x legacy tesseract) A dawg made from punctuation patterns found around words. | |
| The "word" part is replaced by a single space. | |
| </p> | |
| </dd> | |
| <dt class="hdlist1"> | |
| lang.word-dawg | |
| </dt> | |
| <dd> | |
| <p> | |
| (Optional - 3.0x legacy tesseract) A dawg made from dictionary words from the language. | |
| </p> | |
| </dd> | |
| <dt class="hdlist1"> | |
| lang.number-dawg | |
| </dt> | |
| <dd> | |
| <p> | |
| (Optional - 3.0x legacy tesseract) A dawg made from tokens which originally contained digits. | |
| Each digit is replaced by a space character. | |
| </p> | |
| </dd> | |
| <dt class="hdlist1"> | |
| lang.freq-dawg | |
| </dt> | |
| <dd> | |
| <p> | |
| (Optional - 3.0x legacy tesseract) A dawg made from the most frequent words which would have | |
| gone into word-dawg. | |
| </p> | |
| </dd> | |
| <dt class="hdlist1"> | |
| lang.fixed-length-dawgs | |
| </dt> | |
| <dd> | |
| <p> | |
| (Optional - 3.0x legacy tesseract) Several dawgs of different fixed lengths — useful for | |
| languages like Chinese. | |
| </p> | |
| </dd> | |
| <dt class="hdlist1"> | |
| lang.shapetable | |
| </dt> | |
| <dd> | |
| <p> | |
| (Optional - 3.0x legacy tesseract) When present, a shapetable is an extra layer between the character | |
| classifier and the word recognizer that allows the character classifier to | |
| return a collection of unichar ids and fonts instead of a single unichar-id | |
| and font. | |
| </p> | |
| </dd> | |
| <dt class="hdlist1"> | |
| lang.bigram-dawg | |
| </dt> | |
| <dd> | |
| <p> | |
| (Optional - 3.0x legacy tesseract) A dawg of word bigrams where the words are separated by a space | |
| and each digit is replaced by a <em>?</em>. | |
| </p> | |
| </dd> | |
| <dt class="hdlist1"> | |
| lang.unambig-dawg | |
| </dt> | |
| <dd> | |
| <p> | |
| (Optional - 3.0x legacy tesseract) . | |
| </p> | |
| </dd> | |
| <dt class="hdlist1"> | |
| lang.params-model | |
| </dt> | |
| <dd> | |
| <p> | |
| (Optional - 3.0x legacy tesseract) . | |
| </p> | |
| </dd> | |
| <dt class="hdlist1"> | |
| lang.lstm | |
| </dt> | |
| <dd> | |
| <p> | |
| (Required - 4.0 LSTM) Neural net trained recognition model generated by lstmtraining. | |
| </p> | |
| </dd> | |
| <dt class="hdlist1"> | |
| lang.lstm-punc-dawg | |
| </dt> | |
| <dd> | |
| <p> | |
| (Optional - 4.0 LSTM) A dawg made from punctuation patterns found around words. | |
| The "word" part is replaced by a single space. Uses lang.lstm-unicharset. | |
| </p> | |
| </dd> | |
| <dt class="hdlist1"> | |
| lang.lstm-word-dawg | |
| </dt> | |
| <dd> | |
| <p> | |
| (Optional - 4.0 LSTM) A dawg made from dictionary words from the language. | |
| Uses lang.lstm-unicharset. | |
| </p> | |
| </dd> | |
| <dt class="hdlist1"> | |
| lang.lstm-number-dawg | |
| </dt> | |
| <dd> | |
| <p> | |
| (Optional - 4.0 LSTM) A dawg made from tokens which originally contained digits. | |
| Each digit is replaced by a space character. Uses lang.lstm-unicharset. | |
| </p> | |
| </dd> | |
| <dt class="hdlist1"> | |
| lang.lstm-unicharset | |
| </dt> | |
| <dd> | |
| <p> | |
| (Required - 4.0 LSTM) The unicode character set that Tesseract recognizes, with properties. | |
| Same unicharset must be used to train the LSTM and build the lstm-*-dawgs files. | |
| </p> | |
| </dd> | |
| <dt class="hdlist1"> | |
| lang.lstm-recoder | |
| </dt> | |
| <dd> | |
| <p> | |
| (Required - 4.0 LSTM) Unicharcompress, aka the recoder, which maps the unicharset | |
| further to the codes actually used by the neural network recognizer. This is created as | |
| part of the starter traineddata by combine_lang_model. | |
| </p> | |
| </dd> | |
| <dt class="hdlist1"> | |
| lang.version | |
| </dt> | |
| <dd> | |
| <p> | |
| (Optional) Version string for the traineddata file. | |
| First appeared in version 4.0 of Tesseract. | |
| Old version of traineddata files will report Version:Pre-4.0.0. | |
| 4.0 version of traineddata files may include the network spec | |
| used for LSTM training as part of version string. | |
| </p> | |
| </dd> | |
| </dl></div> | |
| </div> | |
| </div> | |
| <div class="sect1"> | |
| <h2 id="_history">HISTORY</h2> | |
| <div class="sectionbody"> | |
| <div class="paragraph"><p>combine_tessdata(1) first appeared in version 3.00 of Tesseract</p></div> | |
| </div> | |
| </div> | |
| <div class="sect1"> | |
| <h2 id="_see_also">SEE ALSO</h2> | |
| <div class="sectionbody"> | |
| <div class="paragraph"><p>tesseract(1), wordlist2dawg(1), cntraining(1), mftraining(1), unicharset(5), | |
| unicharambigs(5)</p></div> | |
| </div> | |
| </div> | |
| <div class="sect1"> | |
| <h2 id="_copying">COPYING</h2> | |
| <div class="sectionbody"> | |
| <div class="paragraph"><p>Copyright (C) 2009, Google Inc. | |
| Licensed under the Apache License, Version 2.0</p></div> | |
| </div> | |
| </div> | |
| <div class="sect1"> | |
| <h2 id="_author">AUTHOR</h2> | |
| <div class="sectionbody"> | |
| <div class="paragraph"><p>The Tesseract OCR engine was written by Ray Smith and his research groups | |
| at Hewlett Packard (1985-1995) and Google (2006-present).</p></div> | |
| </div> | |
| </div> | |
| </div> | |
| <div id="footnotes"><hr></div> | |
| <div id="footer"> | |
| <div id="footer-text"> | |
| Last updated | |
| 2022-01-22 13:50:22 CET | |
| </div> | |
| </div> | |
| </body> | |
| </html> | |