Olena 2.0 — September 16, 2011
Olena 2.0 is a new version following the version 1.0
released two years before. The interface of the core of the platform, the Milena library, has not been changed since Olena 1.0, though it has been extended with new algorithms and data structures. Therefore, programs written with Olena 1.0 are expected to run as-is with Olena 2.0. Please contact us (see below) if you face problems while upgrading to the new version.
As always, we appreciate any comments
or bug reports
about this new version.
Olena 2.0 has been successfully tested on GNU/Linux
GNU/Linux 6.0) and Mac OS X
10.6 (Snow Leopard) and 10.7 (Lion).
The Olena platform is Free Software
. It is distributed under the conditions of the GNU General Public License (GPL) version 2
Olena 2.0 is available as source code archives (tarballs
- The SHA1 digests of these packages are:
Olena is currently being integrated into Debian. However .deb files are already available :
sudo dpkg -i olena-bin_2.0-1_amd64.deb olena-dev_2.0-1_all.deb
Add Olena's repository and install the package:
sudo add-apt-repository ppa:olena/ppa
sudo apt-get update
sudo apt-get install olena
Olena is available in Mandriva Cooker mainstream:
urpmi olena-devel olena-tools olena-doc
Packages are also available here: olena-tools | olena-doc | olena-doc
Mac OS X
sudo port install olena
Once Olena is installed, development headers are available in /usr/include/mln
Two program tools are also available : scribo-cli
- The biggest addition to Olena available in this new version is
the SCRIBO module for Document Image Analysis (DIA). This module
has been developed in the context of the SCRIBO project (see
http://www.scribo.ws). The SCRIBO module provide software
building blocks to create DIA tool chains, including routines for
preprocessing steps (such as binarization, show-through removal,
deskew and denoising), text lines identification, non-text
objects retrieval (tables, pictures, separators, etc.), line
reconstruction (rebuilding separators and tables), Optical
Character Recognition (OCR) integration, document reconstruction
(converting a document to XML, PDF and/or HTML outputs).
Dedicated data structures are also provided to handle
intermediate results. Some Graphical User Interface programs
based on the Qt toolkit are also available.
- Several compilation issues have been addressed.
- New algorithms (especially in mathematical morphology), canvases
(or algorithmic patterns) and efficient algorithm variants have
been added to Milena, as well as some new data types (see NEWS
for more details).
- More conversion routines, especially regarding color values.
- Support for I/O routines (both built-in and depending on
third-party packages) has been improved.
- Various bug fixes and improvements.
More information on updates are provided in the NEWS file of the package.
Features Subject To Change
A list of features which are subject to change in the next releases is available here
If you encounter any problems with this release please contact us