||This article includes a list of references, but its sources remain unclear because it has insufficient inline citations. (April 2009)|
|Stable release||3.18.1 / July 25, 2013|
|Available in||C++, Python, Java, IDL|
Orfeo Toolbox (OTB) is a library for remote sensing image processing. The project had been initiated by the French space agency (CNES) in 2006 and is under heavy developments and the participation from the open source community is currently growing. The goal is to provide potential users of satellite images with all the tools necessary to use these images. The library is originally targeted at high resolution images acquired by the Orfeo constellation: Pleiades satellites and Cosmo-Skymed but also handles a wide variety of sensors.
- Image access: read/write access for most remote sensing image formats (using GDAL), meta-data access, visualization 
- Data access: vector data access (shapefile, kml), DEM model, lidar data 
- Filtering: blurring, denoising, enhancement for optical or radar data 
- Feature extraction: texture computations including Haralick, SFS, Pantex, Edge density, points of interest, alignments, lines, SIFT, SURF 
- Image segmentation: region growing, watershed, level sets 
- Classification: K-means, SVM, Markov random fields and access to all OpenCV machine learning algorithms
- Change detection 
- Stereo reconstruction from images
- Orthorectification and map projections (using ossim) 
- Radiometric indices (vegetation, water, soil) 
- Object-based segmentation and filtering
- PCA computation
- Visualization: a flexible visualization system, customizable via plugins;
- and more.
The library is intensively tested on several platforms as Linux, Mac OS X and Windows OTB Dashboard. Most functions are also adapted to process huge images (>4GB) using streaming and to take advantages of multicore processor as often as possible.
Languages and interaction with other software
OTB is a C++ library, based on Insight toolkit (ITK), a medical image processing library.
Since late 2009, some modules are developed as processing plugins for QGIS. Modules for classification, segmentation, hill shading have provided. This effort has not been funded so far and relies only on volunteers.
OTB algorithms are now available in Qgis through the processing framework Sextante.
Additionally to the library, several applications with GUI are distributed. These application enable interactive segmentation, orthorectification, classification, image registration, etc...
Monteverdi (version 1 and 2)
The OTB-Applications package makes available a set of simple software tools which were designed to demonstrates what can be done with OTB. Many users started using these applications for real processing tasks, so we tried to make them more generic, more robust and easy to use. It supports raster and vector data and integrates most of the already existing OTB applications. The architecture takes advantage of the streaming and multi-threading capabilities of the OTB pipeline. It also uses cool features as processing on demand and automagic file format I/O. The application is called Monteverdi, since this is the name of the Orfeo composer. This is also in memory of the great (and once open source) Khoros/Cantata software.
In 2013, Monteverdi software have been revamped to take into account users feedbacks regarding how useful the tool was, but also regarding what should be improved to move toward greater usability and operationnality. Monteverdi concept has been reworked into a brand new software called Monteverdi2, enlightened by this experience.
OTB is distributed under a free software license CeCILL (similar and compatible with GPL).
|1.0.0||June 30, 2006|
|2.8.0||恭喜发财 (Gong Xi Fa Cai)||January, 2009|
|3.0.0||Manhã de Carnaval||May, 2009|
|3.2.0||62°38'35" S 60°14'31" W||January, 2010|
|3.4.0||Perl A Rebours||July, 2010|
|3.6.0||California Dreamin'||October 7, 2010|
|3.8.0||Pack Ice||December 17, 2010|
|3.10.0||Feliç anniversari||June 30, 2011|
|3.12.0||Πλειάδες||January 31, 2012|
|3.16.0||“v(n+1) = sqrt((v(n)-3)*100)”||February 4, 2013|
|3.18.0||“Seven years of Coding”||July 3, 2013|
As of October 2009, OTB has been presented in major conferences across the five continents 
- IGARSS 2008 in Boston
- ISPRS 2008 in Beijing
- International Summer School on VHR Remote Sensing 2008 in Grenoble
- ESA-EUSC 2008 in Frascati
- EUSC Software dasy 2009 in Madrid
- AUF 2009 in Alger
- IGARSS 2009 in Cape Town for the invited session Open Source Initiatives for Remote Sensing - Orfeo Toolbox 
- FOSS4G 2009 in Sydney 
- Capacity building 2009 in Antananarivo
- Insight Toolkit 2010 Workshop in Washington as a keynote session 
- IGARSS 2010 in Honolulu for a tutorial 
- FOSS4G 2010 in Barcelona 
- OGRS 2012 in Yverdon Les Bains
Many of those presentations are publicly available 
According to statistics on ohloh, there is a total of 41 contributors and almost 260,000 lines of code (this include many libraries upon which OTB is built).
OTB in also use for the development of the operational ground segment for the Venus (Vegetation & Environment new micro satellite) and the ESA Sentinel-2 missions.
- E. Christophe and J. Inglada "Open Source Remote Sensing: Increasing the Usability of Cutting-Edge Algorithms" in IEEE Geoscience and Remote Sensing Newsletter, issue 150, March 2009, pp. 9-15.
- Orfeo Toolbox Software Guide, Updated for OTB 3.18, 2013
- OTB Mad Lab (OTB in python example): http://blog.orfeo-toolbox.org/uncategorized/otb-mad-lab
- Using OTB from Matlab: http://groups.google.com/group/otb-users/browse_thread/thread/8ea7ba2e4034a0f1#
- OTB Qgis plugins: http://hg.orfeo-toolbox.org/OTB-Qgis-plugins
- Mark Young, Danielle Argiro and Steven Kubica, Cantata: Visual Programming Environment for the Khoros System, Computer Graphics, 1995, volume 29, pp 22-24