Java GUI and Tools for Tesseract OCR
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tesseract4java: Tesseract GUI

A graphical user interface for the Tesseract OCR engine. The program has been introduced in the Master’s thesis “Analyses and Heuristics for the Improvement of Optical Character Recognition Results for Fraktur Texts” by Paul Vorbach (German).

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Binary distributions and release notes are available in the releases section.



Preprocessing view

Box Editor

Box editor for training

Glyph Overview

Glyph overview for easier detection of errors

Comparison View

Comparison view to compare the original document with the perceived result

Transcription View

Evaluation view with a transcription field



Batch Export

Batch export functionality to handle large projects

Building and running the software

This software is written in Java and can be built using Apache Maven. In order to build the software you have to follow these steps:

  1. Obtain a copy either by cloning the repository or downloading the current zip file.
  2. Also obtain a copy of a patched version of ocrevalUAtion (zip file).
  3. Open a command line in the ocrevalUAtion directory and run mvn clean install.
  4. cd to the tesseract4java directory and run mvn clean package -Pstandalone. This will include the Tesseract binaries for your platform. You can manually define the platform by providing the option -Djavacpp.platform=[PLATFORM] (available platforms are windows-x86_64, windows-x86, linux-x86_64, linux-x86, and macosx-x86_64).

After you've run through all steps, the directory "tesseract4java/gui/target" will contain the file "tesseract4java-[VERSION]-[PLATFORM].jar", which you can run by double-clicking or executing java -jar tesseract4java-[VERSION]-[PLATFORM].jar.




tesseract4java - a graphical user interface for the Tesseract OCR engine
Copyright (C) 2014-2016 Paul Vorbach

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <>.