Ocrad

Ocrad
Developer(s)	Antonio Diaz Diaz
Stable release	0.27 (11 January 2019; 5 years ago) [±]
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.^[2] Since conversion to newer Qt versions, current versions of KDE no longer contain Kooka; development continues in the KDE git repository.^[3] Ocrad can be also used as an OCR engine in OCRFeeder.^[4]

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.^[5]

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

↑ "GNU Ocrad". FSF. 11 January 2019. http://directory.fsf.org/wiki/Ocrad.
↑ "Kooka home page". Archived from the original on 22 July 2010. https://web.archive.org/web/20100722050518/http://kooka.kde.org/. Retrieved 19 July 2010.
↑ "KDE Kooka git source code commit log". https://cgit.kde.org/kooka.git/log. Retrieved 30 March 2019.
↑ "GNOME GIT source code repository". http://git.gnome.org/browse/ocrfeeder/tree/README. Retrieved 3 February 2010.
↑ "bug-ocrad Archives". http://lists.gnu.org/archive/html/bug-ocrad/. 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)

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Original source: https://en.wikipedia.org/wiki/Ocrad. Read more

[2] GPL-2.0-or-later since version 0.24 (2014-10-03).

[3] GPL-3.0-or-later from version 0.17 (2007-06-29) until version 0.23 (2014-03-10).

[4] GPL-2.0-or-later from version 0.3 (2003-07-19) until version 0.16 (2006-10-20).

[news-1] "GNU Ocrad". FSF. 11 January 2019. http://directory.fsf.org/wiki/Ocrad.

[5] "Kooka home page". Archived from the original on 22 July 2010. https://web.archive.org/web/20100722050518/http://kooka.kde.org/. Retrieved 19 July 2010.

[6] "KDE Kooka git source code commit log". https://cgit.kde.org/kooka.git/log. Retrieved 30 March 2019.

[7] "GNOME GIT source code repository". http://git.gnome.org/browse/ocrfeeder/tree/README. Retrieved 3 February 2010.

[8] "bug-ocrad Archives". http://lists.gnu.org/archive/html/bug-ocrad/. Retrieved 20 July 2010.

v t e Optical character recognition software
Free software	CuneiForm GOCR Ocrad OCRFeeder OCRopus Tesseract
Proprietary software	ABBYY FineReader Asprise OCR Microsoft Office Document Imaging OmniPage ReadSoft SmartScore TeleForm VueScan
See also	Comparison of optical character recognition software