See the License for the specific language governing permissions and WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. Unless required by applicable law or agreed to in writing, softwareĭistributed under the License is distributed on an "AS IS" BASIS, You may not use this file except in compliance with the License. The code in this repository is licensed under the Apache License, Version 2.0 (the "License") Please report an issue only for a bug, not for asking questions. tesseract-dev - For tesseract developers.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. Particularly the FAQ to see if your problem is addressed there. Supportīefore you submit an issue, please review the guidelines for this repository.įor support, first read the documentation, Wrapper section in the AddOns documentation.ĭocumentation of Tesseract generated from source code by doxygen can be found on. If you need bindings to libtesseract for other programming languages, please see the For developersĬ++ API to build their own application. Tesseract imagename outputbase įor more information about the various command line options use tesseract -help or man tesseract.Įxamples can be found in the documentation. You can either Install Tesseract via pre-built binary packageĪ C++ compiler with good C++17 support is required for building Tesseract from source. Open issues can be found in issue tracker,Īnd Change Log for more details of the releases. Latest source code is available from main branch on GitHub. Newer minor versions and bugfix versions are available from Major version 5 is the current stable version and started with releaseĥ.0.0 on November 30, 2021. From 2006 until November 2018 it was developed by Google. In 2005 Tesseract was open sourced by HP. Tesseract was originally developed at Hewlett-Packard Laboratories Bristol UK and at Hewlett-Packard Co, Greeley Colorado USA between 19, with some more changes made in 1996 to port to Windows, and some C++izing in 1998. See Tesseract Training for more information. Tesseract can be trained to recognize other languages. If you need one, please see the 3rdParty documentation. This project does not include a GUI application. 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. Tesseract supports various output formats: plain text, hOCR (HTML), PDF, invisible-text-only PDF, TSV and ALTO (the last one - since version 4.1.0). Tesseract supports various image formats including PNG, JPEG and TIFF. Tesseract has unicode (UTF-8) support, and can recognize more than 100 languages "out of the box". Ray Smith was the lead developer until 2018. Stefan Weil is the current lead developer. It also needs traineddata files which support the legacy engine, for example those from the tessdata repository. Compatibility with Tesseract 3 is enabled by using the Legacy OCR Engine mode (-oem 0). 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. This package contains an OCR engine - libtesseract and a command line program - tesseract.
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