Ocrad - GNU Project - Free Software Foundation (FSF) (original) (raw)

Ocrad - The GNU OCR

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Introduction

GNU Ocrad is an OCR (Optical Character Recognition) program and library based on a feature extraction method. It reads images in png or pnm formats and produces text in byte (8-bit) or UTF-8 formats. The formats pbm (bitmap), pgm (greyscale), and ppm (color) are collectively known as pnm.

Ocrad includes a layout analyser able to separate the columns and blocks of text normally found on printed pages.

Ocrad can be used as a stand-alone console application, or as a backend to other programs.

Documentation

The manual is available in the info system of the GNU Operating System. Use info to access the top level info page. Use info ocrad to access the ocrad section directly.

An online manual for ocrad can be found at<manual/ocrad%5Fmanual.html>.

Download

The latest released version of GNU Ocrad can be found athttp://ftpmirror.gnu.org/ocrad/or in the subdirectory /gnu/ocrad/ on your favoriteGNU mirror. For other ways to obtain ocrad, please readHow to get GNU Software. The latest released version will be the most recent version available athttp://ftp.gnu.org/gnu/ocrad/. You may also subscribe tobug-ocradand receive an email every time a new version is released.

To decompress ocrad tarballs you may need lzip fromhttp://www.nongnu.org/lzip/lzip.html. Then use "tar -xf ocrad[version].tar.lz" or "lzip -cd ocrad[version].tar.lz | tar -xf -" to extract the files.

Old versions and testing versions can be found athttp://download.savannah.gnu.org/releases/ocrad/.

How to get help

For general discussion of errors (bugs) in ocrad, the mailing listbug-ocrad@gnu.orgis the most appropriate forum. Please send messages as plain text. Please do not send messages encoded as HTML nor encoded as base64 nor included as multiple formats. Please include a descriptive subject line with the word "ocrad" in it.

An archive of the bug report mailing list is available at http://lists.gnu.org/mailman/listinfo/bug-ocrad.

How to help

To contact the author, either to report an error (bug) or to contribute fixes or improvements, send mail tobug-ocrad@gnu.org. Please send messages as plain text. If posting patches they should be in unified diff format against the latest version. They should include a text description.

If you know someone who is using gzip, bzip2, or xz, please tell him/her about the advantages of switching to lzip.

You may also help to cover the cost of developing ocrad bydonating money via PayPal or debit/credit card, but help in spreading the word about the advantages of lzip is even more appreciated. Thanks.

See also the ocrad project page at Savannah.

Maintainer

Ocrad was written and is maintained by Antonio Diaz Diaz.

Licensing

Ocrad 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 2 of the License, or (at your option) any later version.

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Updated: Date:2025/03/2200:48:43Date: 2025/03/22 00:48:43 Date:2025/03/2200:48:43 Author:antonioAuthor: antonio Author:antonio

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