Recent releases for tesseract

tesseract 3.04.00

2015-07-24T06:31:40+00:00

- Added OpenCL support (experimental) - Many bug fixes

tesseract 3.04.01

2016-02-16T21:32:43+00:00

bug-fix release of 3.04 version

tesseract 3.05.00

2017-02-16T18:05:57+00:00

- Made some fine tuning to the hOCR output. - Added TSV as another optional output format. - Fixed ABI break introduced in 3.04.00 with the AnalyseLayout() method. - text2image tool - Enable all OpenType ligatures available in a font. This feature requires Pango 1.38 or newer. - Training tools - Replaced asserts with tprintf() and exit(1). - Fixed Cygwin compatibility. - Improved multipage tiff processing. - Improved the embedded pdf font (pdf.ttf). - Enable selection of OCR engine mode from command line. - Changed tesseract command line parameter '-psm' to '--psm'. - Added new C API for orientation and script detection, removed the old one. - Increased minimum autoconf version to 2.59. - Removed dead code. - Fixed many compiler warning. - Fixed memory and resource leaks. - Fixed some issues with the 'Cube' OCR engine. - Fixed some openCL issues. - Added option to build Tesseract with CMake build system. - Implemented [CPPAN](https://github.com/cppan) support for easy Windows building.

tesseract 3.05.01

2017-06-01T18:10:17+00:00

Bug fix release

tesseract 4.0.0-beta.1

2018-03-15T19:39:51+00:00

Beta release for Ubuntu 18.04

tesseract 3.05.02

2018-06-19T09:16:51+00:00

Bug fix release

tesseract 4.0.0-beta.3

2018-06-20T15:03:12+00:00

Beta 3 Release

tesseract 4.0.0-beta.4

2018-08-02T11:00:48+00:00

Beta 4 Release

tesseract 4.0.0-rc1

2018-10-01T13:45:52+00:00

This is release candidate 1 for upcoming 4.0 version

tesseract 4.0.0-rc2

2018-10-07T19:13:01+00:00

This is release candidate 2 for upcoming 4.0 version

tesseract 4.0.0-rc3

2018-10-14T17:42:29+00:00

This is release candidate 3 for upcoming 4.0 version

tesseract 4.0.0-rc4

2018-10-24T06:58:36+00:00

This is release candidate 4 for upcoming 4.0 version

tesseract 4.0.0

2018-10-29T09:00:45+00:00

Detailed [Release notes](https://github.com/tesseract-ocr/tesseract/wiki/ReleaseNotes#tesseract-release-notes-oct-29-2018---v400), [Changelog](https://github.com/tesseract-ocr/tesseract/wiki/4.0x-Changelog) and documentation can be found in [project wiki](https://github.com/tesseract-ocr/tesseract/wiki).

tesseract 4.1.0

2019-07-07T13:43:22+00:00

* Added new renders Alto, LSTMBox, WordStrBox. * Added character boxes in hOCR output. * Added python training scripts (experimental) as alternative shell scripts. * Better support AVX / AVX2 / SSE. * Disable OpenMP support by default (see e.g. #1171, #1081). * Fix for bounding box problem. * Implemented support for whitelist/blacklist in LSTM engine. * Improved cmake configuration. * Code modernization and improvements. * A lot of bug fixes... Detailed [changelog](https://github.com/tesseract-ocr/tesseract/wiki/4.0x-Changelog) is on wiki. Windows installer can be downloaded from https://github.com/UB-Mannheim/tesseract/wiki.

tesseract 4.1.1

2019-12-26T15:43:01+00:00

* Implemented sw build (cppan is depreciated) * Improved cmake build * Code cleanup and optimization * A lot of bug fixes...

tesseract 5.0.0-alpha-20201224

2020-12-24T08:37:16+00:00

This is a new pre-release of Tesseract 5.0.0. It is considered to be production ready for end users, but nevertheless not stable because more incompatible API changes are planned. * improved performance (also on ARM / ARM64) * improved unit tests * many fixes * faster flat build with automake * support for latest macOS (including new M1 processor) See also list of [all changes](https://github.com/tesseract-ocr/tesseract/compare/5.0.0-alpha...5.0.0-alpha-20201224).

tesseract 5.0.0-alpha-20201231

2020-12-31T18:52:20+00:00

This is a new pre-release of Tesseract 5.0.0. It has massive changes in the public API which is a great step towards a final 5.0.0. All unit tests pass, but because of those changes more practical experience is needed. * the public API no longer uses proprietary data types GenericVector, STRING * pdf.ttf is no longer needed because it is now integrated into the code See also list of [all changes](https://github.com/tesseract-ocr/tesseract/compare/5.0.0-alpha-20201224...5.0.0-alpha-20201231).

tesseract 5.0.0-alpha-20210401

2021-04-01T20:23:57+00:00

This is a new pre-release of Tesseract 5.0.0. * Replaced all remaining `STRING` by `std::string` * Replaced lots of `GenericVector` by `std::vector` * Replaced all `malloc` / `free` by C++ code * Modernized and formatted code See also list of [all changes](https://github.com/tesseract-ocr/tesseract/compare/5.0.0-alpha-20201231...5.0.0-alpha-20210401).

tesseract 5.0.0-beta-20210815

2021-08-15T15:12:21+00:00

This is a new pre-release of Tesseract 5.0.0. * Bug fixes * Modernize more code * More options for binarization * Improved support for ARM NEON * No longer depends on Abseil for unit tests * Support float for model training and text recognition (faster, requires less RAM) See also list of [all changes](https://github.com/tesseract-ocr/tesseract/compare/5.0.0-alpha-20210401...5.0.0-beta-20210815).

tesseract 5.0.0-beta-20210916

2021-09-16T04:48:35+00:00

This is a new pre-release of Tesseract 5.0.0. * Bug fixes * Extend URI support for Tesseract with libcurl * Rename processed TIFF output file and add page number if needed See also list of [all changes](https://github.com/tesseract-ocr/tesseract/compare/5.0.0-beta-20210815...5.0.0-beta-20210916).

tesseract 5.0.0-rc1

2021-10-29T20:43:28+00:00

This is the first release candidate of Tesseract 5.0.0. * Enable fast float32 LSTM by default * Switch to NFC normalisation everywhere * Remove banner message * Disable music staff detection and removal * Add new command line option --loglevel * Bug fixes See also list of [all changes](https://github.com/tesseract-ocr/tesseract/compare/5.0.0-beta-20210916...5.0.0-rc1).

tesseract 5.0.0-rc2

2021-11-14T19:10:13+00:00

This is the second release candidate of Tesseract 5.0.0. * Fix regression for OCR with more than one model file * Bug fixes * Optimizations See also list of [all changes](https://github.com/tesseract-ocr/tesseract/compare/5.0.0-rc1...5.0.0-rc2).

tesseract 4.1.2

2021-11-14T19:42:02+00:00

This is a new stable release of Tesseract 4.1. **Note**: The autoconf build is broken (see issue #3642), so please use 4.1.3. * Allow line images with larger width for training * Bug fixes * Build updates and fixes See also list of [all changes](https://github.com/tesseract-ocr/tesseract/compare/4.1.1...4.1.2).

tesseract 4.1.3

2021-11-15T17:36:40+00:00

This is a new stable release of Tesseract 4.1. * Fix broken autoconf build (issue #3642) See also list of [all changes](https://github.com/tesseract-ocr/tesseract/compare/4.1.2...4.1.3).

tesseract 5.0.0-rc3

2021-11-22T21:09:11+00:00

This is the third release candidate of Tesseract 5.0.0. * Improve training messages * Add RowAttributes getter to PageIterator See also list of [all changes](https://github.com/tesseract-ocr/tesseract/compare/5.0.0-rc2...5.0.0-rc3).

tesseract 5.0.0

2021-11-30T17:53:43+00:00

This is the final stable release of Tesseract 5.0.0. * Limit BCER to interval [0,1] * Improved build process * Cleaned code See also list of [all changes](https://github.com/tesseract-ocr/tesseract/compare/5.0.0-rc3...5.0.0).

tesseract 5.0.1

2022-01-07T12:48:14+00:00

This is a bug fix release of Tesseract 5.0. * Add SPDX-License-Identifier to public include files. * Support redirections when running OCR on a URL. * Lots of fixes and improvements for cmake builds. Distributions should use the autoconf build. * Fix broken msys2 build with gcc 11. * Fix parameter certainty_scale (was duplicated). * Fix some compiler warnings and clean code. * Correctly detect amd64 and i386 on FreeBSD. * Add libarchive and libcurl in continuous integration actions. * Update submodule googletest to release v1.11.0. See also list of [all changes](https://github.com/tesseract-ocr/tesseract/compare/5.0.0...5.0.1).

tesseract 5.1.0

2022-03-01T16:33:53+00:00

This is a new minor version of Tesseract 5. * Handle image and line regions in output formats ALTO, hOCR and text. * New parameter curl_timeout for curl_easy_setop. * Build fixes and improvements. * Catch nullptr in PageIterator::Orientation to improve robustness. * Remove unused code. See also list of [all changes](https://github.com/tesseract-ocr/tesseract/compare/5.0.1...5.1.0).

tesseract 5.2.0

2022-07-06T20:22:26+00:00

This is a new minor version of Tesseract 5. * Improvements and fixes for continuous integration, autoconf and cmake builds. * Set /Os for some 32 bit MS compilers (fixes #3769). * Improve comments and other documentation. * Add initial support for Intel AVX512F. * Fix for very large PDF files on 32 bit hosts (fixes #3805). * Fix NEON detection on FreeBSD. * Fix regression with UZN files (fixes #3837). * Fix calling delete[] for memory allocated by malloc in C API. * Add an API function to init tesseract with traineddata from memory (fixes #3691). * Replace direct access to Leptonica internal data structures by function calls and support latest releases of Leptonica. * Replace std::regex by std::string functions (fixes issue #3830). * Use compiled-in TESSDATA_PREFIX also on Windows (fixes #3767). * Add new parameter 'invert_threshold', change the default threshold from 0.5 to 0.7 and mark parameter 'tessedit_do_invert' as deprecated. See also list of [all changes](https://github.com/tesseract-ocr/tesseract/compare/5.1.0...5.2.0).

tesseract 5.3.0-rc1

2022-12-13T21:42:21+00:00

## What's Changed * Fix memory issues in ScrollView::MessageReceiver by @p12tic in https://github.com/tesseract-ocr/tesseract/pull/3872 * autotools: Add rule for svpaint executable by @stweil in https://github.com/tesseract-ocr/tesseract/pull/3873 * Replace call of exit function by return statement in main function by @stweil in https://github.com/tesseract-ocr/tesseract/pull/3878 * Fix the build on CodeQL/Analyze by @arseniy-sonar in https://github.com/tesseract-ocr/tesseract/pull/3888 * CI: Remove Ubuntu 18.04 by @amitdo in https://github.com/tesseract-ocr/tesseract/pull/3902 * configure.ac: fix build on aarch64_be by @ffontaine in https://github.com/tesseract-ocr/tesseract/pull/3907 * SW CI: Add paths filter by @amitdo in https://github.com/tesseract-ocr/tesseract/pull/3908 * Create .mailmap by @amitdo in https://github.com/tesseract-ocr/tesseract/pull/3910 * Fix tesseract.pc from cmake to match autotools by @jeroen in https://github.com/tesseract-ocr/tesseract/pull/3930 * Update README.md by @nicholasz2510 in https://github.com/tesseract-ocr/tesseract/pull/3935 * Fixed 2 errors by @Gitoffthelawn in https://github.com/tesseract-ocr/tesseract/pull/3938 * fix issue #3940 - remove colormap before thresholding by @zdenop in https://github.com/tesseract-ocr/tesseract/pull/3942 * Update upload-artifact action by @rettinghaus in https://github.com/tesseract-ocr/tesseract/pull/3949 * Update checkout action to version 3 by @rettinghaus in https://github.com/tesseract-ocr/tesseract/pull/3948 * Fix Markdownlint by @Saibamen in https://github.com/tesseract-ocr/tesseract/pull/3950 * Fix broken links in CONTRIBUTING.md by @doraeric in https://github.com/tesseract-ocr/tesseract/pull/3951 * pdfrenderer.cpp: Ignore non-text blocks by @amitdo in https://github.com/tesseract-ocr/tesseract/pull/3959 * lstm.train: allow .box from .raw.png too by @bertsky in https://github.com/tesseract-ocr/tesseract/pull/3962 * Fix a number of performance issues (reported by Coverity Scan) by @stweil in https://github.com/tesseract-ocr/tesseract/pull/3967 * Fix training tools for legacy engine (issue #3925) by @stweil in https://github.com/tesseract-ocr/tesseract/pull/3970 * Fix function tesseract::WriteFeature (issue #3925) by @stweil in https://github.com/tesseract-ocr/tesseract/pull/3972 * Modernize function ObjectCache::DeleteUnusedObjects (fix issue with s… by @stweil in https://github.com/tesseract-ocr/tesseract/pull/3978 * More fixes for issue #3925 by @stweil in https://github.com/tesseract-ocr/tesseract/pull/3977 ## New Contributors * @p12tic made their first contribution in https://github.com/tesseract-ocr/tesseract/pull/3872 * @arseniy-sonar made their first contribution in https://github.com/tesseract-ocr/tesseract/pull/3888 * @nicholasz2510 made their first contribution in https://github.com/tesseract-ocr/tesseract/pull/3935 * @rettinghaus made their first contribution in https://github.com/tesseract-ocr/tesseract/pull/3949 * @Saibamen made their first contribution in https://github.com/tesseract-ocr/tesseract/pull/3950 * @doraeric made their first contribution in https://github.com/tesseract-ocr/tesseract/pull/3951 **Full Changelog**: https://github.com/tesseract-ocr/tesseract/compare/5.2.0...5.3.0-rc1

tesseract 5.3.0

2022-12-22T14:16:22+00:00

This is a new minor version of Tesseract 5. ## What's Changed * Fix memory issues in ScrollView::MessageReceiver by @p12tic in https://github.com/tesseract-ocr/tesseract/pull/3872 * autotools: Add rule for svpaint executable by @stweil in https://github.com/tesseract-ocr/tesseract/pull/3873 * Replace call of exit function by return statement in main function by @stweil in https://github.com/tesseract-ocr/tesseract/pull/3878 * Fix the build on CodeQL/Analyze by @arseniy-sonar in https://github.com/tesseract-ocr/tesseract/pull/3888 * CI: Remove Ubuntu 18.04 by @amitdo in https://github.com/tesseract-ocr/tesseract/pull/3902 * configure.ac: fix build on aarch64_be by @ffontaine in https://github.com/tesseract-ocr/tesseract/pull/3907 * SW CI: Add paths filter by @amitdo in https://github.com/tesseract-ocr/tesseract/pull/3908 * Create .mailmap by @amitdo in https://github.com/tesseract-ocr/tesseract/pull/3910 * Fix tesseract.pc from cmake to match autotools by @jeroen in https://github.com/tesseract-ocr/tesseract/pull/3930 * Update README.md by @nicholasz2510 in https://github.com/tesseract-ocr/tesseract/pull/3935 * Fixed 2 errors by @Gitoffthelawn in https://github.com/tesseract-ocr/tesseract/pull/3938 * fix issue #3940 - remove colormap before thresholding by @zdenop in https://github.com/tesseract-ocr/tesseract/pull/3942 * Update upload-artifact action by @rettinghaus in https://github.com/tesseract-ocr/tesseract/pull/3949 * Update checkout action to version 3 by @rettinghaus in https://github.com/tesseract-ocr/tesseract/pull/3948 * Fix Markdownlint by @Saibamen in https://github.com/tesseract-ocr/tesseract/pull/3950 * Fix broken links in CONTRIBUTING.md by @doraeric in https://github.com/tesseract-ocr/tesseract/pull/3951 * pdfrenderer.cpp: Ignore non-text blocks by @amitdo in https://github.com/tesseract-ocr/tesseract/pull/3959 * lstm.train: allow .box from .raw.png too by @bertsky in https://github.com/tesseract-ocr/tesseract/pull/3962 * Fix a number of performance issues (reported by Coverity Scan) by @stweil in https://github.com/tesseract-ocr/tesseract/pull/3967 * Fix training tools for legacy engine (issue #3925) by @stweil in https://github.com/tesseract-ocr/tesseract/pull/3970 * Fix function tesseract::WriteFeature (issue #3925) by @stweil in https://github.com/tesseract-ocr/tesseract/pull/3972 * Modernize function ObjectCache::DeleteUnusedObjects (fix issue with s… by @stweil in https://github.com/tesseract-ocr/tesseract/pull/3978 * More fixes for issue #3925 by @stweil in https://github.com/tesseract-ocr/tesseract/pull/3977 ## New Contributors * @p12tic made their first contribution in https://github.com/tesseract-ocr/tesseract/pull/3872 * @arseniy-sonar made their first contribution in https://github.com/tesseract-ocr/tesseract/pull/3888 * @nicholasz2510 made their first contribution in https://github.com/tesseract-ocr/tesseract/pull/3935 * @rettinghaus made their first contribution in https://github.com/tesseract-ocr/tesseract/pull/3949 * @Saibamen made their first contribution in https://github.com/tesseract-ocr/tesseract/pull/3950 * @doraeric made their first contribution in https://github.com/tesseract-ocr/tesseract/pull/3951 **Full Changelog**: https://github.com/tesseract-ocr/tesseract/compare/5.2.0...5.3.0

tesseract 5.3.1

2023-04-01T19:55:17+00:00

## What's Changed * Update README.md by @seupedro in https://github.com/tesseract-ocr/tesseract/pull/3992 * Fix FP division by zero (issue #3995) by @stweil in https://github.com/tesseract-ocr/tesseract/pull/3996 * Fix linkage of icu and pango by @autoantwort in https://github.com/tesseract-ocr/tesseract/pull/4006 * Fix build with gcc 13 by including by @kraj in https://github.com/tesseract-ocr/tesseract/pull/4009 * msvc debug: fix wrong lib name in generated pkgconfig file by @autoantwort in https://github.com/tesseract-ocr/tesseract/pull/4008 * Fix libdir in tesseract.pc from CMake by @ferdnyc in https://github.com/tesseract-ocr/tesseract/pull/4013 * Replace 'can not' by 'cannot' by @stweil in https://github.com/tesseract-ocr/tesseract/pull/4015 * Readme: Link to list of supported languages by @tooomm in https://github.com/tesseract-ocr/tesseract/pull/4027 * Improve the DebugDump output by slightly adjusting the format. by @GerHobbelt in https://github.com/tesseract-ocr/tesseract/pull/4022 * Fix issue #4010 by @amitdo in https://github.com/tesseract-ocr/tesseract/pull/4041 ## New Contributors * @seupedro made their first contribution in https://github.com/tesseract-ocr/tesseract/pull/3992 * @autoantwort made their first contribution in https://github.com/tesseract-ocr/tesseract/pull/4006 * @kraj made their first contribution in https://github.com/tesseract-ocr/tesseract/pull/4009 * @ferdnyc made their first contribution in https://github.com/tesseract-ocr/tesseract/pull/4013 * @tooomm made their first contribution in https://github.com/tesseract-ocr/tesseract/pull/4027 **Full Changelog**: https://github.com/tesseract-ocr/tesseract/compare/5.3.0...5.3.1

tesseract 5.3.2

2023-07-11T11:58:19+00:00

## What's Changed * fix: Fix snap package building by @brlin-tw in https://github.com/tesseract-ocr/tesseract/pull/4043 * Support for Sgaw and W Pwo Karen languages in the Myanmar validator. by @ben417 in https://github.com/tesseract-ocr/tesseract/pull/4065 * Replace bool array by more compact vector by @stweil in https://github.com/tesseract-ocr/tesseract/pull/4067 * Replace deprecated sprintf by @stweil in https://github.com/tesseract-ocr/tesseract/pull/4068 * Improve format of logging from lstmtraining by @stweil in https://github.com/tesseract-ocr/tesseract/pull/4066 * Clean code by @stweil in https://github.com/tesseract-ocr/tesseract/pull/4071 * Abort with error message if OSD is requested with LSTM-only model by @stweil in https://github.com/tesseract-ocr/tesseract/pull/4073 * Fix typos by @luzpaz in https://github.com/tesseract-ocr/tesseract/pull/4096 ## New Contributors * @ben417 made their first contribution in https://github.com/tesseract-ocr/tesseract/pull/4065 * @luzpaz made their first contribution in https://github.com/tesseract-ocr/tesseract/pull/4096 **Full Changelog**: https://github.com/tesseract-ocr/tesseract/compare/5.3.1...5.3.2

tesseract 5.3.3

2023-10-05T19:05:14+00:00

## What's Changed * Disable -mfpu=neon for aarch64 by @hesmar in https://github.com/tesseract-ocr/tesseract/pull/4098 * Fix build without git clone in cloned directory by @pkubaj in https://github.com/tesseract-ocr/tesseract/pull/4099 * Fix some issues which were reported by Coverity Scan by @stweil in https://github.com/tesseract-ocr/tesseract/pull/4097 * Update ScrollView.java by @Parryword in https://github.com/tesseract-ocr/tesseract/pull/4103 * Fix some code comments by @stweil in https://github.com/tesseract-ocr/tesseract/pull/4113 * Optimize function ImageFind::FindImages by @stweil in https://github.com/tesseract-ocr/tesseract/pull/4114 * Rename BibTex file to please GitHub by @stweil in https://github.com/tesseract-ocr/tesseract/pull/4115 * Fix Broken URLs in citations.bib by @kevinunger in https://github.com/tesseract-ocr/tesseract/pull/4118 * initDSProfile: correct std::vector usage by @stima in https://github.com/tesseract-ocr/tesseract/pull/4124 * Fix typo in stepblob.h by @eltociear in https://github.com/tesseract-ocr/tesseract/pull/4133 * Fix regression in layout detection since 5.0.0 (fixes issue #4014) by @stweil in https://github.com/tesseract-ocr/tesseract/pull/4136 * Update ScrollView.java by @Parryword in https://github.com/tesseract-ocr/tesseract/pull/4104 * Fix loading of sublangs (regression) by @stweil in https://github.com/tesseract-ocr/tesseract/pull/4141 ## New Contributors * @hesmar made their first contribution in https://github.com/tesseract-ocr/tesseract/pull/4098 * @Parryword made their first contribution in https://github.com/tesseract-ocr/tesseract/pull/4103 * @kevinunger made their first contribution in https://github.com/tesseract-ocr/tesseract/pull/4118 * @stima made their first contribution in https://github.com/tesseract-ocr/tesseract/pull/4124 * @eltociear made their first contribution in https://github.com/tesseract-ocr/tesseract/pull/4133 **Full Changelog**: https://github.com/tesseract-ocr/tesseract/compare/5.3.2...5.3.3