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| Developer(s) | Antonio Diaz Diaz |
|---|---|
| Stable release | 0.29 
/ 18 January 2024 |
| Repository | |
| Operating system | Linux, FreeBSD, NetBSD, OpenBSD, macOS |
| Type | Optical character recognition |
| License | 2014: GPL-2.0-or-later 2007: GPL-3.0-or-later 2003: GPL-2.0-or-later |
| Website | gnu.org/s/ocrad |
Ocrad is an optical character recognition program and part of the GNU Project. It is free software licensed under the GNU GPL.
Based on a feature extraction method, it reads images in portable pixmap formats known as Portable anymap and produces text in byte (8-bit) or UTF-8 formats. Also included is a layout analyser, able to separate the columns or blocks of text normally found on printed pages.
User interface
Ocrad can be used as a stand-alone command-line application or as a back-end to other programs.
Kooka, which was the KDE environment's default scanning application until KDE 4, can use Ocrad as its OCR engine. Since conversion to newer Qt versions, current versions of KDE no longer contain Kooka; development continues in the KDE git repository. Ocrad can be also used as an OCR engine in OCRFeeder.
History
Ocrad has been developed by Antonio Diaz Diaz since 2003. Version 0.7 was released in February 2004, 0.14 in February 2006 and 0.18 in May 2009. It is written in C++.
Archives of the bug-ocrad mailing list go back to October 2003.
Notes
- GPL-2.0-or-later since version 0.24 (2014-10-03).
- GPL-3.0-or-later from version 0.17 (2007-06-29) until version 0.23 (2014-03-10).
- GPL-2.0-or-later from version 0.3 (2003-07-19) until version 0.16 (2006-10-20).
References
- Antonio Diaz (20 January 2024). "GNU Ocrad 0.29 released". Retrieved 21 January 2024.
- "Kooka home page". Archived from the original on 22 July 2010. Retrieved 19 July 2010.
- "KDE Kooka git source code commit log". Retrieved 30 March 2019.
- "GNOME GIT source code repository". Retrieved 3 February 2010.
- "bug-ocrad Archives". Retrieved 20 July 2010.
External links
- Ocrad GNU Project Homepage
- Peter Selinger's Review of Linux OCR software (2007)
- Andreas Gohr Linux OCR Software Comparison (2010)
- Online OCR server powered by Ocrad
- Tesseract & Ocrad comparison, Linux Journal (2007)
| Optical character recognition software | |
|---|---|
| Free software | |
| Proprietary software | |
| See also | |