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3rd party Windows exe’s/installer. Cygwin includes packages for Tesseract. UB Mannheim has installers available for current (5.3.0) and older versions.
- Installation
Tesseract is an open source text recognition (OCR) Engine,...
- Tessdoc
Tesseract is an open source text recognition (OCR) Engine,...
- Installation
- Table of Contents
- About
- Brief history
- Installing Tesseract
- Running Tesseract
- For developers
- Support
- License
- Dependencies
- Latest Version of README
- GeneratedCaptionsTabForHeroSec
This package contains an OCR engine - libtesseract and a command line program - tesseract.
Tesseract 4 adds a new neural net (LSTM) based OCR engine which is focused on line recognition, but also still supports the legacy Tesseract OCR engine of Tesseract 3 which works by recognizing character patterns. Compatibility with Tesseract 3 is enabled by using the Legacy OCR Engine mode (--oem 0). It also needs traineddata files which support the legacy engine, for example those from the tessdata repository.
Stefan Weil is the current lead developer. Ray Smith was the lead developer until 2018. The maintainer is Zdenko Podobny. For a list of contributors see AUTHORS and GitHub's log of contributors.
Tesseract has unicode (UTF-8) support, and can recognize more than 100 languages "out of the box".
Tesseract supports various image formats including PNG, JPEG and TIFF.
Tesseract supports various output formats: plain text, hOCR (HTML), PDF, invisible-text-only PDF, TSV and ALTO.
Tesseract was originally developed at Hewlett-Packard Laboratories Bristol UK and at Hewlett-Packard Co, Greeley Colorado USA between 1985 and 1994, with some more changes made in 1996 to port to Windows, and some C++izing in 1998. In 2005 Tesseract was open sourced by HP. From 2006 until November 2018 it was developed by Google.
Major version 5 is the current stable version and started with release 5.0.0 on November 30, 2021. Newer minor versions and bugfix versions are available from GitHub.
Latest source code is available from main branch on GitHub. Open issues can be found in issue tracker, and planning documentation.
See Release Notes and Change Log for more details of the releases.
You can either Install Tesseract via pre-built binary package or build it from source.
A C++ compiler with good C++17 support is required for building Tesseract from source.
Basic command line usage:
For more information about the various command line options use tesseract --help or man tesseract.
Developers can use libtesseract C or C++ API to build their own application. If you need bindings to libtesseract for other programming languages, please see the wrapper section in the AddOns documentation.
Documentation of Tesseract generated from source code by doxygen can be found on tesseract-ocr.github.io.
Before you submit an issue, please review the guidelines for this repository.
For support, first read the documentation, particularly the FAQ to see if your problem is addressed there. If not, search the Tesseract user forum, the Tesseract developer forum and past issues, and if you still can't find what you need, ask for support in the mailing-lists.
Mailing-lists:
•tesseract-ocr - For tesseract users.
•tesseract-dev - For tesseract developers.
Please report an issue only for a bug, not for asking questions.
NOTE: This software depends on other packages that may be licensed under different open source licenses.
Tesseract uses Leptonica library which essentially uses a BSD 2-clause license.
Tesseract uses Leptonica library for opening input images (e.g. not documents like pdf). It is suggested to use leptonica with built-in support for zlib, png and tiff (for multipage tiff).
For the latest online version of the README.md see:
https://github.com/tesseract-ocr/tesseract/blob/main/README.md
Tesseract OCR is an open source OCR engine that supports more than 100 languages and various image and output formats. Learn how to install, run, and develop with Tesseract OCR from the main repository on GitHub.
This releases provides an improved PDF renderer, adds a new PAGE XML renderer, extends the API to retrieve the text angle/gradient and has lots of smaller updates for code and documentation: Update appveyor.yml - Url has changed by @softwaretirol in #4188.
3 de fev. de 2021 · The latest documentation is available at https://tesseract-ocr.github.io/. Please find this page in its new home: https://tesseract-ocr.github.io/tessdoc/Downloads. Old wiki - no longer maintained. The pages were moved, see the new documentation.
Learn how to install and use tesseract, a powerful optical character recognition (OCR) engine that supports over 100 languages. Find out how to download training data, configure the engine, and run examples in R.
