Tesseract Open Source OCR Engine (Mirror)

Stefan Weil ebbfc3ae8d Improve robustness of function LoadDataFromFile (#1207) 1 week ago
.github 1263941f1d Make less verbose 5 months ago
android 06fb88495c Update Android.mk 11 months ago
api aa6eb6bd46 Remove Tesseract parameter "include_page_breaks" and use FF by default 2 months ago
arch a905548ed6 Autotools build: Remove the option 'USING_MULTIPLELIBS' 2 months ago
ccmain ad5ee18415 Make font size estimation work with the lstm engine (#1173) 1 month ago
ccstruct e62e8f5f80 Merge pull request #1109 from mingodad/mingodad-fix-interword-spaces 2 months ago
ccutil ebbfc3ae8d Improve robustness of function LoadDataFromFile (#1207) 1 week ago
classify 2a77d5ad69 returns the correct dictionary if lstm only used 2 months ago
cmake 9f763e5466 Update SourceGroups.cmake 11 months ago
contrib 3458e7c981 helper script to generate dawg input files from text 1 year ago
cutil a905548ed6 Autotools build: Remove the option 'USING_MULTIPLELIBS' 2 months ago
dict a905548ed6 Autotools build: Remove the option 'USING_MULTIPLELIBS' 2 months ago
doc 2f48d69bcd doc: Fix use of MAINTAINER_MODE 6 months ago
googletest @ 4bab34d208 f36dc34c4f Add googletest submodule 3 months ago
java 5d60444f40 automake: Enable all warnings and fix a warning 6 months ago
lstm a905548ed6 Autotools build: Remove the option 'USING_MULTIPLELIBS' 2 months ago
opencl a905548ed6 Autotools build: Remove the option 'USING_MULTIPLELIBS' 2 months ago
snap 91afb5540f Download the leptonica source from github 4 months ago
tessdata 82d62f89a2 Update Makefile.am (add 'lstm.train') 7 months ago
testdata 8e55e52be7 Harder unittest that uses file i/o and string manipulation 3 months ago
testing 69ef9401ca Groundtruth for testing/eurotext.tif 2 months ago
tests 99755b0732 googletest: Add dummy test 3 months ago
textord a905548ed6 Autotools build: Remove the option 'USING_MULTIPLELIBS' 2 months ago
training f3c4b894dc Fix help message for unicharset_extractor (#1206) 1 week ago
unittest 67f706f9ef unittest/apiexample_test: Use googletest API for error handling 2 months ago
viewer a905548ed6 Autotools build: Remove the option 'USING_MULTIPLELIBS' 2 months ago
vs2010 1cf8fe51a0 Remove mathfix.h 5 months ago
wordrec a905548ed6 Autotools build: Remove the option 'USING_MULTIPLELIBS' 2 months ago
.gitignore f36dc34c4f Add googletest submodule 3 months ago
.gitmodules f36dc34c4f Add googletest submodule 3 months ago
.travis.yml 63e1862049 Disable travis os x builds as they do not work well on travis-side. 2 months ago
AUTHORS ec99d9f2b2 AUTHORS: Add more contributors 11 months ago
CMakeLists.txt a538cd126b Add Leptonica's pkg-config-found library directory to the search path 1 month ago
CONTRIBUTING.md 3e1099157f Change Mac OS X -> macOS 5 months ago
COPYING 2c837dffc3 Result of clang tidy on recent merge 1 year ago
ChangeLog e2b1e9f977 Fix ChangeLog for Leptonica 1.74 7 months ago
Dockerfile defb399657 Fix and improve Dockerfile 6 months ago
INSTALL bf9f40cac6 Fix typos 9 months ago
INSTALL.GIT.md c55e487ea4 Add additional information 2 months ago
LICENSE 5913d7344f Added missing license headers 1 year ago
Makefile.am 267734bc34 Changes needed for adding make check for unittest 3 months ago
NEWS 425d593ebe top-skimming import from sf.net 10 years ago
README.md 4506133aa2 Update readme for 3.05.01 5 months ago
appveyor.yml 1b4fb3a762 Update appveyor.yml 1 month ago
autogen.sh 5d60444f40 automake: Enable all warnings and fix a warning 6 months ago
configure.ac a905548ed6 Autotools build: Remove the option 'USING_MULTIPLELIBS' 2 months ago
cppan.yml c50e4f6238 Fix cppan dependency. 2 months ago
docker-compose.yml 71ad8c9bff Dockerifying using travis build script 1 year ago
tesseract.pc.cmake 6641989866 Cmake install 7 months ago
tesseract.pc.in ef26b312f9 improve tesseract.pc.in - fixes #241 1 year ago

README.md

Tesseract OCR

Build

Build Status Build status

Other

Coverity Scan Build Status Insight.io

About

This package contains an OCR engine - libtesseract and a command line program - tesseract.

The lead developer is Ray Smith. 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 output formats: plain-text, hocr(html), pdf, tsv, invisible-text-only pdf.

You should note that in many cases, in order to get better OCR results, you'll need to improve the quality of the image you are giving Tesseract.

This project does not include a GUI application. If you need one, please see the 3rdParty wiki page.

Tesseract can be trained to recognize other languages. See Tesseract Training for more information.

Brief history

Tesseract was originally developed at Hewlett-Packard Laboratories Bristol and at Hewlett-Packard Co, Greeley Colorado 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. Since 2006 it is developed by Google.

The latest stable version is 3.05.01, released on June 1, 2017. Latest source code for 3.05 is available from 3.05 branch on github.

Source code for the new LSTM based 4.00.00alpha version is available from the master branch on github. Please note this branch is under active development.

See Release Notes and Change Log for more details of the releases.

Installing Tesseract

You can either Install Tesseract via pre-built binary package or build it from source.

Supported Compilers are:

  • GCC 4.8 and above
  • Clang 3.4 and above
  • MSVC 2015, 2017

Other compilers might work, but are not officially supported.

Running Tesseract

Basic command line usage:

tesseract imagename outputbase [-l lang] [--oem ocrenginemode] [--psm pagesegmode] [configfiles...]

For more information about the various command line options use tesseract --help or man tesseract.

For developers

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 on AddOns wiki page.

Documentation of Tesseract generated from source code by doxygen can be found on tesseract-ocr.github.io.

Support

Before you submit an issue, please review the guidelines for this repository.

For support, first read the Wiki, 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:

Please report an issue only for a bug, not for asking questions.

License

The code in this repository is licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

   http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

NOTE: This software depends on other packages that may be licensed under different open source licenses.

Latest Version of README

For the latest online version of the README.md see:

https://github.com/tesseract-ocr/tesseract/blob/master/README.md