Ocrad Knowpia

Ocrad
Developer(s)	Antonio Diaz Diaz
Stable release	0.29 / 18 January 2024
Repository	ftp.gnu.org/gnu/ocrad/ ;
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 edit

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 edit

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 edit

^ 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 edit

^ Antonio Diaz 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.