What's new about OTB?

Pleiades is now in flight since almost one year and its twin Pleiades 1B is going to be launched in few days from Kourou. In the frame of the availability of Pleiades images, the OTB team at CNES recently worked on a set of new tutorials to learn how OTB functionality can help in the manipulation and analysis of Pleiades imagery.

OTB at OGRS 2012

To test these new tutorials, we organized a workshop in the frame of the OGRS conference. This conference aims at exchanging ideas on development and use of open source geospatial software in both research and education. The conference took place in Yverdon-Les-Bains Switzerland at the end of october and it was a great opportunity to see how Open Source initiatives help to the dissemination and the use of geospatial information.

SVM classification map

Data used for the workshop were some Pleiades imagery samples provided by Astrium Geo-Information services and the exercises provide an overview of very last new functionality of the library. The course went from the basic image manipulation, segmentation, pixel and object based classification to stereo elevation from Pleiades images pair. Feedbacks and discussions with people who attended the workshop have been really positive.

Mean-shift segmentation on harbour area

On the technical point of view, the idea of these tutorials was to build up a set of OTB functionalities based exercises that can be easily extended in the future. For this purpose, we used the powerful editing and organizing note tool org-mode. It allows to easily create nice ad hoc PDF or HTML documents and to organize lessons or workshops, thanks to the partial export feature for instance. Another advantage of this new OTB tutorials is that they provides now a simple and modular architecture and we hope to continue to enrich it with new exercises in the future.

Thanks again to the Pleiades project which made this workshop possible.

All the materials for these courses are now available in the OTB documentation repository. Feel free to try it, extend it and do not hesitate to send us feedbacks!

Keep in touch!

We would like to announce a new committer in OTB: Angelos Tzotsos.

Angelos is a remote sensing expert with background in surveying engineering and software development. He is involved in numerous activities around free and open source software and has great experience in geospatial applications. He is among other things responsible of the release of the OSGeoLive project.

He is the official packager of the library for OpenSuse and he has released a new platform for remote sensing image analysis and processing named Gnorasi.

Moreover he has recently contributed a new method for the fusion of panchromatic and multispectral images named LMVM.

Thank you very much for the great work you are making and welcome to the project.

Manuel

Dear all,

OTB attends OGRS 2012! We have a half day workshop on Wednesday the 24th of October in the afternoon (room S151), about using the latest OTB features with Pleiades images, and we also have a talk on the large scale segmentation framework on Friday the 26th at 10:15 (room E03). Read the complete exciting OGRS 2012 program here.

If you are attending OGRS 2012 yourself, we will be delighted to meet you there!

See you in Yverdon,

Julien, Manuel and Julien

CNES is pleased to announce the release of OTB 3.14.1 and Monteverdi 1.12.1.

This is a minor bug-fix release that corrects several issues from the version 3.14. 21 bugs have been spotted and fixed since the last major release. For more information, please read the complete release note available here.

We recommend that all users update to 3.14.1 as soon as possible to increase stability.

Thanks again to all the contributors for the great work and to all the users for their feedbacks.

As usual, sources (OTB, Monteverdi, OTB-Wrapping) and binary packages (Monteverdi for Mac OS X and Windows) can be downloaded here. For Linux users, new version will be soon available for update through your favorite package manager software.

We welcome your feedback and request, and encourage you to join the community and mailing list.

Let’s move now to OTB 3.16!

OTB Team

As it’s interesting to use cmake to display dynamic dependencies of the library (look at this post). We can also look at the dependencies of the OTB binary package (Linu

x Ubuntu) to show that OTB is (still) a complex system (click on it for a full view):

OTB dependency with debtree

This image shows dependencies of the OTB binary package for Ubuntu from the orfeotoolbox-stable ubuntugis repository. This image was generated using the debtree package

debtree libotb > ~/temporary/libotb.dot

dot -Tpng ~/temporary/libotb.dot -o ~/temporary/libotb.png

It’s also a very useful representation to understand potential conflicts. For example, this graph shows that the OTB package is linked with to two different versions of gdal (1.7 and 1.9) and that’s a big issue!

NOTE: We had to deactivate for now mapnik support in OTB Linux package generation to . The libotb package for version 3.14 will depend only of version gdal.

New OTB dependency with debtree

Manuel