Dr.-Ing. Ralf Dragon
Technoparkstraße 1
8005 Zürich
phone: 0041445004332
Ralf Dragon left the Institut für Informationsverabeitung.
Publications and research activities from the time after the departure are not listed here.

Ralf Dragon studied Electrical Engineering with a focus on information processing at the Leibniz Universität Hannover, starting in 2001. In 2005, he wrote his study thesis 'Appearance-Based Facial Motion Analysis for Model-Based Coding' during a stay in Sweden at the Institutionen för Systemteknik, University of Linköping. His diploma thesis 'Kamerakalibrierung mit beweglichen Kalibriermustern' ('Camera Calibration with Movable Calibration Patterns') at the Institut für Informationsverarbeitung dealt with a new method of lens undistortion. It got the VDE study award 2006 of the VDE Hannover. Ralf Dragon received his Dipl.-Ing. degree with distinction in 2006. Since 2007 he has been working towards a PhD degree at the Institut für Informationsverarbeitung.

Research interests


Show selected publications only
  • Ralf Dragon, Bodo Rosenhahn, Jörn Ostermann
    Multi-Scale Clustering of Frame-to-Frame Correspondences for Motion Segmentation
    12th European Conference on Computer Vision (ECCV 2012), Florence, October 2012
  • Michele Fenzi, Ralf Dragon, Laura Leal-Taixé, Bodo Rosenhahn, Jörn Ostermann
    3D Object Recognition and Pose Estimation for Multiple Objects using Multi-Prioritized RANSAC and Model Updating
    Annual Symposium of the German Association for Pattern Recognition (DAGM), accepted as oral presentation , Graz, Austria, August 2012
  • Ralf Dragon, Michele Fenzi, Wolf Siberski, Bodo Rosenhahn, Jörn Ostermann
    Towards Feature-Based Situation Assessment for Airport Apron Video Surveillance
    Theoretic Foundations of Computer Vision: Outdoor and Large-Scale Real-World Scene Analysis, April 2012
  • Muhammad Shoaib, Ralf Dragon, Jörn Ostermann
    Context-aware visual analysis of elderly activity in cluttered home
    EURASIP Journal on Advances in Signal Processing, springer, Vol. 2011, December 2011
  • Oliver Müller, Sabine Donner, Tobias Klinder, Ralf Dragon, Ivonne Bartsch, Frank Witte, Alexander Krüger, Alexander Heisterkamp, Bodo Rosenhahn
    Model Based 3D Segmentation and OCT Image Undistortion of Percutaneous Implants
    Medical Image Computing and Computer-Assisted Intervention – MICCAI 2011 14th International Conference, Lecture Notes in Computer Science (LNCS), Springer Berlin / Heidelberg, Vol. 6893, pp. 454-462, September 2011, edited by Fichtinger, Gabor and Martel, Anne and Peters, Terry
  • Ralf Dragon, Tobias Mörke, Bodo Rosenhahn, Jörn Ostermann
    Fingerprints for Machines - Optical Identification of Grinding Imprints
    33rd DAGM Symposium, August 2011
  • Ralf Dragon, Carsten Dolar, Jörn Ostermann, Matthias Rieger, Holger Blume, Fabian Abel, Philipp Kärger
    Intelligente Videoüberwachung
    UniMagazin, Vol. 3, pp. 34-37, December 2010
  • Muhammad Shoaib, Ralf Dragon, Jörn Ostermann
    View-invariant Fall Detection for Elderly in Real Home Environment
    The Fourth Pacific-Rim Symposium on Image and Video Technology (PSIVT2010), IEEE, November 2010
  • Ralf Dragon, Muhammad Shoaib, Bodo Rosenhahn, Jörn Ostermann
    NF-Features - No-Feature-Features for Representing non-Textured Regions
    11th European Conference on Computer Vision (ECCV 2010), Heraklion, Greece, September 2010
  • Ralf Dragon, Jörn Ostermann, Berend Denkena, Bernd Breidenstein, Tobias Mörke
    Data Storage in Gentelligent Components: A New Way for Self-Authentication
    2nd workshop "Self-X in Engineering", KI 2010, Karlsruhe, Germany, September 2010
  • M. Shoaib, T. Elbrandt, R. Dragon, J. Ostermann
    Altcare: Safe Living For Elderly People
    4th International ICST Conference on Pervasive Computing Technologies for Healthcare 2010, IEEE, March 2010
  • Ralf Dragon, Christian Becker, Bodo Rosenhahn, Jörn Ostermann
    Reading from Scratch -- A Vision-System for Reading Data on Micro-Structured Surfaces
    31. DAGM Symposium, Lecture Notes in Computer Science, Springer, Vol. 5748, pp. 402--411, Jena, Germany, September 2009, edited by Joachim Denzler and Gunther Notni and Herbert Süße
  • Berend Denkena, Isabel Steinbrenner, Jörn Ostermann, Ralf Dragon
    Machining Microstructures by means of a High-Dynamic Fast-Tool-Servo
    Proceedings of the 9th international conference of the european society for precision engineering and nanotechnology, Vol. 2, pp. 451-454, June 2009
  • M. Shoaib, R. Dragon, J. Ostermann
    Shadow Detection for Moving Humans Using Gradient-Based Background Subtraction
    ICASSP International Conference on Acoustics, Speech and Signal Processing, Taipei, Taiwan, April 2009
  • R. Dragon, I. Steinbrenner, J. Ostermann, B. Denkena
    Digitale Dateinstrukturen auf gentelligenten Bauteilen
    Zweiter Workshop optische Technologien – HOT, Hannover, November 2008
  • M. Shoaib, R. Dragon, J. Ostermann
    Improving Object Detection by Contour-Based Shadow Removal
    Zweiter Workshop optische Technologien – HOT, Hannover, November 2008
  • R. Dragon
    Optical Readout of Information on Micro-Structured Surfaces
    Technical Report, October 2008
  • Ralf Dragon, Isabel Steinbrenner, Jörn Ostermann, Berend Denkena
    Inherent Mechanical Data Storage on Micro-Structured Surfaces
    4th. IPROMS Virtual International Conference 2008, July 2008
  • Berend Denkena, David Boehnke, Christian Spille, Ralf Dragon
    In-Process Information Storage on Surfaces by Turning Operation
    CIRP Annals - Manufacturing Technology, Elsevier, Vol. 57, No. 1, pp. 85-88, May 2008
  • Ralf Dragon, Jörn Ostermann
    Ein optisches Ausleseverfahren für bauteilinhärent gespeicherte Informationen
    Erster Workshop Optische Technologien – HOT, Hannover, November 2007
  • Tobias Elbrandt, Ralf Dragon, Jörn Ostermann
    Non-iterative Camera Calibration Procedure Using A Virtual Camera
    Vision, Modeling, and Visualisation, Max-Planck-Institut für Informatik, pp. 143-150, Saarbrücken, Germany, November 2007
  • Berend Denkena, Jörn Ostermann, Christian Becker, Ralf Dragon, Christian Spille
    Struktureinbringung und Ausleseverfahren zur Informationsspeicherung
    Erstes SFB 653 Kolloquium, April 2007
  • Stefan Breuer, Sven Bergmann, Ralf Dragon, Sebastian Möller
    Set-up of a Unit-Selection Synthesis with a Prominent Voice
    Fifth international conference on Language Resources and Evaluation, Genoa, Italy, May 2006
Other activities
  • During my student time, I developed Lam4HTK, which is a speech aligner that uses HTK as backend. It consists of a bunch of scripts (including a manual how to use them, create it with 'latex lam4htk') and a prototype.
  • Teaching assistant of lecture Pattern Recognition. I give an introduction into Matlab and use it for demonstration of different procedures of pattern recognition.
  • Former tutor of students project "Videoauswertung zu Überwachungszwecken". In this project, C/C++ and OpenCV are used to find solutions for surveillance tasks with a static camera observing a scene with moving objects.