Remote sensing processing library developped by CNES
 ORFEO Toolbox (OTB) is distributed as an open source library of image processing
 algorithms. OTB is based on the medical image processing library ITK and offers
 particular functionalities for remote sensing image processing in general and for
 high spatial resolution images in particular. OTB is distributed under a free
 software licence CeCILL (similar to GPL) to encourage contribution from users and to
 promote reproducible research. The library is intensively tested on several platforms
 as Linux, Unix and Windows. Most functionnalies are also adapted to process huge
 images using streaming and multithreading as often as possible.
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 Among other, OTB provides a number of heavily documented functionalities as
 .
 image access: optimized read/write access for most of remote sensing image formats, meta-data access, visualization;
 filtering: blurring, denoising, enhancement;
 feature extraction: interest points, alignments, lines;
 image segmentation: region growing, watershed, level sets;
 classification: K-means, SVM, Markov random fields;
 change detection.
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 OTB rely on itk, gdal, ossim, libsvm among others.