Christian-Albrechts-University of Kiel Christian-Albrechts-University of Kiel
Faculty of Engineering
Institute of Computer Science 		Cognitive Systems
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Dipl.-Inf. Lennart Wietzke


Contact:
  • Email: lw@ks.informatik.uni-kiel.de

  • Phone: +49 431 880-7544

  • Postal Address:
    Christian-Albrechts-Universität zu Kiel
    Institut für Informatik und Praktische Mathematik
    Christian-Albrechts-Platz 4
    D-24118 Kiel
  • Room: 1315


Projects:
DFG Project: 2D / 3D Image processingmore...
 
Publications:
2009Monogenic curvature tensor as image model
Sommer, G., Wietzke, L., Zang, D.
In D. Laidlaw and J. Weickert (eds.): Visualization and Processing of Tensor Fields, pp. 281-304, Springer-Verlag, Berlin, Heidelberg, 2009 		PDF , BibTeX, Abstract
2009The conformal monogenic signal of image sequences
Wietzke, L., Sommer, G., Schmaltz, C.
In D. Cremers, B. Rosenhahn and A.L. Yuille (eds) : Statistical and Geometrical Approaches to Visual Motion Analysis, LNCS 5604, pages 305-322, Springer-Verlag, Berlin, Heidelberg, 2009.		PDF , Abstract
2009Handling occlusions in region based pose tracking by increasing the number of regions
Schmaltz, C., Rosenhahn, B., Brox, T., Weickert, J., Wietzke, L., Sommer, G.
In D. Cremers, B. Rosenhahn and A.L. Yuille (eds) : Statistical and Geometrical Approaches to Visual Motion Analysis, Springer-Verlag, Berlin, Heidelberg, 2009, to appear. 		  
2009The Geometry of 2D Image Signals
Wietzke, L., Sommer, G., Fleischmann, O.
In Proceedings CVPR 2009, June 20-25, Miami, IEEE Computer Society, pages 1690-1697, 2009. 		PDF , BibTeX, Abstract
2009Nonlinear Motion Detection
Wietzke, L., Sommer, G.
In X. Jiang and N. Petkov (eds.): Computer Analysis of Images and Patterns, Proc. 13th Internat. Conference, CAIP, 2009, Münster, LNCS, Vol. 5702, pp.1122-1129, Springer-Verlag, Berlin, Heidelberg, 2009. 		 , Abstract
2009The Solution of the Interference Problem of 2D Waves by Means of Clifford Structures
Wietzke, L., Fleischmann, O., Sommer, G.
In Proc. ICNAAM 2009, American Institute of Physics Conference Series , AIP, 2009, accepted.		  
2009A Spherical Harmonic Expansion for the Hilbert Transform on the Two-Sphere
Fleischmann, O., Wietzke, L., Sommer, G.
In Proc. ICNAAM 2009 - International Conference on Numerical Analysis and Applied Mathematics, American Institute of Physics Conference Series , AIP, 2009, pages 777-780		 BibTeX 
2008Analysis of the curvature tensor from the viewpoint of signal processing
Wietzke, L., Sommer, G., Schmaltz, C., Weickert, J.
In Proc. ICNAAM 2007, American Institute of Physics Conference Series , volume 1046, pp. 150-153, AIP, 2008 		PDF , BibTeX, Abstract
2008Differential geometry of monogenic signal representations
Wietzke, L., Sommer, G., Schmaltz, C., Weickert, J.
In Proc. 2nd Workshop "Robot Vision", Auckland, New Zealand, Gerald Sommer and Reinhard Klette (Eds.), LNCS, Vol. 4931, pp. 454-465, Springer-Verlag Berlin, Heidelberg New York, 2008 		PDF , BibTeX, Abstract
2008The conformal monogenic signal
Wietzke, L., Sommer, G.
In Proc. Pattern Recognition, DAGM, volume 5096, pp. 527-536, Springer LNCS 5096, Berlin -Heidelberg, Munich, 2008 		PDF , BibTeX, Abstract
20082D image analysis by generalized Hilbert transforms in conformal space
Wietzke, L., Fleischmann, O., Sommer, G.
In Proc. ECCV (2), Marseille (France), LNCS, volume 5303, pp. 638-649, Springer-Verlag, Berlin, Heidelberg, 2008 		PDF , BibTeX, Abstract
2008Signal analysis by generalized Hilbert transforms on the unit sphere
Wietzke, L., Fleischmann, O., Sommer, G.
In Proc. Minisymposium on Complex and Hypercomplex Methods in Applications (ICNAAM 2008), volume 1048, pp. 706-709, AIP Conference Proceedings, 2008 		PDF , BibTeX, Abstract
2008The 2D Analytic Signal
Wietzke, L., Sommer, G.
Technical Report No 0802, Department of Computer Science, Kiel University 		PDF , BibTeX, Abstract
2008The relation of inverse problems and isotropic 2D signal analysis
Wietzke, L., Sommer, G.
INSTITUTE OF MATHEMATICS AND ITS APPLICATIONS (IMA), Proc. Mathematics in Signal Processing 8, Cirencester, England, 2008, pp. 124-127 		PDF , BibTeX, Abstract
2008Dealing with self-occlusion in region based motion capture by means of internal regions
Schmaltz, C., Rosenhahn, B., Brox, T., Weickert, J., Wietzke, L., Sommer, G.
In F.J. Perales, R.B. Fischer (eds.): Articulated Motion and Deformable Objects, LNCS, Vol. 5098, pp. 102-111, Springer-Verlag, Heidelberg, 2008, ISBN:978-3-540-70516-1 		PDF  
2007Dense optical flow estimation from the monogenic curvature tensor
Zang, D., Wietzke, L., Schmaltz, C., Sommer, G.
In Proc. Scale Space and Variational Methods in Computer Vision, SSVM 2007, Ischia, LNCS, Vol. 4485, pp. 239-250, Springer-Verlag, Berlin, 2007 		PDF , BibTeX, Abstract
2007Occlusion modeling by tracking multiple objects
Schmaltz, C., Rosenhahn, B., Brox, T., Weickert, J., Wietzke, L., Sommer, G.
In Proc. 29th Annual Symposium of the German Association for Pattern Recognition (DAGM 2007), LNCS, Vol. 4713, pp. 33-40, Springer-Verlag, Berlin, 2007 		PDF , BibTeX 
2007Region-based pose tracking
Schmaltz, C., Rosenhahn, B., Brox, T., Cremers, D., Weickert, J., Wietzke, L., Sommer, G.
In Proc. 3rd Iberian Conference on Pattern Recognition and Image Analysis, Girona, Spain, June, 2007, LNCS, Vol. 4478, pp. 56-63, Springer-Verlag, Berlin, 2007 		PDF , BibTeX