Publications
Book Chapters
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Random Forests
Hänsch, R. and Hellwich, O., Handbuch der Geodäsie, Freeden, W. and Rummel, R. (Ed.), Springer Verlag, July 2016. -
Object Recognition from Polarimetric SAR Images
Hänsch, R. and Hellwich, O., Radar Remote Sensing of Urban Areas (Remote Sensing and Digital Image Processing), Uwe Soergel (Ed.), Springer Verlag, March 2010.
Conference and journal articles - 2018
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A comparative evaluation of polarimetric distance measures within the Random Forest framework for the classification of PolSAR images R. Hänsch, O. Hellwich, IGARSS 2018 Valencia, Spain, July 2018. (accepted) |
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Supervised classification from TomoSAR data O. D’Hondt, R. Hänsch, O. Hellwich, IGARSS 2018 Valencia, Spain, July 2018. (accepted) |
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Classification of Icon Type and Cooldown State in Video Game Replays J. Eichelbaum, R. Hänsch, O. Hellwich, ICIAR 2018 Póvoa de Varzim, Portugal, June 2018. (accepted) |
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Supervised classification from TomoSAR data O. D’Hondt, R. Hänsch, O. Hellwich, EUSAR 2018 Aachen, Germany, June 2018. (accepted) |
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Exploiting GAN-Based SAR to Optical Image Transcoding for Improved Classification via Deep Learning A. Ley, O. D’Hondt, S. Valade, R. Hänsch, O. Hellwich, EUSAR 2018 Aachen, Germany, June 2018. (accepted) |
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Faster Trees: Strategies for accelerated training and prediction of Random Forests for classification of PolSAR images R. Hänsch, O. Hellwich, ISPRS TCIII Midterm 2018 Beijing, China, May 2018. (accepted) |
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2018 IEEE GRSS Data Fusion Contest: Multi-modal land use classification B. Le Saux, N. Yokoya, R. Hänsch, S. Prasad, IEEE Geoscience and Remote Sensing Magazine. |
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Classification of PolSAR Images by Stacked Random Forests R. Hänsch, O. Hellwich, ISPRS International Journal of Geo-Information. |
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Towards Image Colorization with Random Forests H. Mohn, M. Gaebelein, R. Hänsch, O. Hellwich, VISAPP 2018 Funchal, Portugal, January 2018. |
2017
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Skipping the real world: Classification of PolSAR images without explicit feature extraction R. Hänsch, O. Hellwich, ISPRS Journal of Photogrammetry and Remote Sensing. |
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Automatic Building Abstraction from Aerial Photogrammetry A. Ley, R. Hänsch, O. Hellwich, PhotoGA 2017 Wuhan, China, September 2017. |
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Camera Based Detection of Pedestrians using Genetic Optimized Hough Forests M. Iwanczik, H. Türmer, R. Hänsch, A. Dehghani, FAST-zero '17 Nara, Japan, September 2017. |
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Correct and still wrong: The relationship between sampling strategies and the estimation of the generalization error R. Hänsch, A. Ley, O. Hellwich, IGARSS 2017 Fort Worth, Texas, USA, July 2017. |
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Near Real-time Object Detection in RGBD Data R. Hänsch, S. Kaiser, O. Hellwich, VISAPP 2017 Porto, Portugal, February 2017. |
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Specularity, Shadow, and Occlusion Removal for Planar Objects in Stereo Case I. Nurutdinova, R. Hänsch, V. Mühler, S. Bourou, A.I. Papadaki, O. Hellwich, VISAPP 2017 Porto, Portugal, February 2017. |
2016
2015
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Evaluation of tree creation methods within Random Forests for classification of PolSAR images R. Hänsch, O. Hellwich, IGARSS 2015 Milan, Italy, July 2015. |
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Feature-independent classification of hyperspectral images by Projection-Based Random Forests R. Hänsch, O. Hellwich, WHISPERS 2015 Tokyo, Japan, June 2015. |
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Performance Assessment and Interpretation of Random Forests by Three-Dimensional Visualizations R. Hänsch, O. Hellwich, IVAPP 2015 - Proceedings of the International Conference on Information Visualization Theory and Applications Berlin, Germany, March 2015. |
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Prior Knowledge about Camera Motion for Outlier Removal in Feature Matching E.K. Stathopoulou, R. Hänsch, O. Hellwich, VISAPP 2015 - Proceedings of the International Conference on Computer Vision Theory and Applications Berlin, Germany, March 2015. |
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Automatic registration of unordered point clouds acquired by Kinect sensors using an overlap heuristic T. Weber, R. Hänsch, O. Hellwich, ISPRS Journal of Photogrammetry and Remote Sensing, Volume 102, April 2015, Pages 96-109. |
2014
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Comparison of 3D Interest Point Detectors and Descriptors for Point Cloud Fusion Hänsch, R., Weber, T. & Hellwich, O., ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences 2014, pp. 57-64, Zurich, Switzerland, September 2014. |
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Security Impact of High Resolution Smartphone Cameras Fiebig, T., Hänsch, R. & Krissler, J., Proceedings of the 23rd USENIX Security Symposium 2014, San Diego, USA, August 2014. |
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Graph-Cut Segmentation of Polarimetric SAR Images Hänsch, R., Hellwich, O. & Wang, X., Proceedings of the IGARSS 2014, pp. 1733-1736, Quebec, Canada, July 2014. |
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Comparison of different Color Spaces for Image Segmentation using Graph-Cut Wang, X., Hänsch, R., Hellwich, O., Proceedings of the 9th International Conference on Computer Vision Theory and Applications, VISAPP 2014, pp. 301-308, Lisbon, Portugal, January 2014. |
2013
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Integrated Matching and Geocoding of SAR and Optical Satellite Images Hellwich, O., Wefelscheid, C., Lukaszewicz, J., Hänsch, R., Siddique, M.A. and Stanski, A., Proceedings of 6th Iberian Conference, ibPRIA 2013, Madeira, Portugal, June 2013. |
2012
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Impact of Hierarchical Structures in Image Categorization Systems Klaghstan, M., Hänsch, R. und Hellwich, O., Proceedings of IPTA 2012, Turkey, Istanbul, October 2012. |
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Automated drop detection using image analysis for online particle size monitoring in multiphase systems Maaß, S., Rojahn, J., Hänsch, R. and Kraume, M., Computers and Chemical Engineering, Vol. 45, pp. 27-37, October 2012. |
2011
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Three-Dimensional Building Reconstruction Using Images Obtained By Unmanned Aerial Vehicles Wefelscheid, C., Hänsch, R. and Hellwich, O., Proceedings of the International Conference on Unmanned Aerial Vehicle in Geomatics (UAV-g) 2011, Editors: H. Eisenbeiss, M. Kunz and H. Ingensand, Zurich, Switzerland, September 2011. |
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Color Textons for Building Detection Hänsch, R. and Hellwich, O., The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol. XXXVIII-4/W19, Hannover, Germany, June 2011. |
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Building Detection From One Orthophoto and High-Resolution InSAR Data Using Conditional Random Fields Hänsch, R., Wegner, J.D., Thiele, A. and Soergel, U., IEEE Journal of selected topics in applied Earth Observations and Remote Sensing, Vol. 4(1), pp. 83-91, March 2011. |
2010
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Complex-Valued Multi-Layer Perceptrons - An Application to Polarimetric SAR data Hänsch, R., PE&RS, Photogrammetric Engineering & Remote Sensing Journal, 76(9):1081-1088, 2010. |
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Random Forests for Building Detection in Polarimetric SAR data Hänsch, R. and Hellwich, O., Proceedings of IGARRS 2010, Hawaii, USA, pp. 460-463, July 2010. |
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Convolutional Complex-Valued Neural Networks for Object Detection in PolSAR data Hänsch, R. and Hellwich, O., Proceedings of EUSAR 2010, VDE, Aachen,Germany, pp. 877-880, June 2010. |
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Fusion of high-resolution InSAR data and optical imagery for building detection using Conditional Random Fields Hänsch, R., Wegner, J.-D., Thiele, A. and Sörgel, U., Proceedings of EUSAR 2010, VDE, Aachen, Germany, pp. 1090-1093, June 2010. |
2009
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Semi-Supervised Learning For Classification of Polarimetric SAR-Data Hänsch, R. and Hellwich, O., Proceedings of IGARSS 2009, Capetown, South Africa, July 2009. |
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Classification of Polarimetric SAR Data by Complex Valued Neural Networks Hänsch, R. and Hellwich, O., Prodeedings of ISPRS Workshop 2009, Volume XXXVIII, Part 1-4-7/W5, Hannover, Germany, June 2009. |
2008
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Weighted Pyramid Linking for Segmentation of Fully-Polarimetric SAR Data Hänsch, R., Jäger, M. and Hellwich, O., XXI Congress of the Int. Society for Photogrammetry and Remote Sensing (ISPRS), Int. Archives of Photogrammetry and Remote Sensing, vol. XXXVII, Beijing, China, July 2008. |
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Clustering by deterministic annealing and Wishart based distance measures for fully-polarimetric SAR-data Hänsch, R., Jäger, M. and Hellwich, O., Proceedings of EUSAR 2008, Volume 3, Friedrichshafen, Germany, pp. 419-422, June 2008 |
2007
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A Distributed Approach to Efficient Time-Domain SAR Processing Reigber, A., Jäger, M., Dietzsch, A., Hänsch, R., Weber, M., Przybyl, H., Prats, P., Proceedings of IGARSS'07, Barcelona, Spain, pp. 582-585, July 2007. |
Theses
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Generic object categorization in PolSAR images - and beyond
Doctoral thesis, Technische Universität Berlin, 2014. [link] -
Offline Recognition of Japanese Characters
Diploma thesis, Technische Universität Berlin, 2007.
Research in Media
- PhD-thesis summary in "Hochschulnachrichten", Journal for Photogrammetry, Remote Sensing and Geoinformation Science, No. 6, 2014
- BR-online: Hochauflösende Kameras: Wie Smartphones zum Sicherheitsrisiko werden
- heise.de: Smartphones: Passwörter und Fingerabdrücke mittels eingebauter Kamera ausspioniert
- spiegel.de: Smartphone-Kameras: Hohe Auflösung, hohes Sicherheitsrisiko