Michael Hofer
Lecturer
Address
Michael Hofer, Dr.
Geometric Modeling and Industrial Geometry
Vienna University of Technology
Wiedner Hauptstrasse 8-10/104
A-1040 Wien, Austria
Phone: +43 1 58801 10404 (Mrs. Klement)
Fax: +43 1 58801 11399
Email: klement AT geometrie.tuwien.ac.at (Mrs. Klement)
Web: http://geometrie.tuwien.ac.at/hofer/
Teaching
Book
H. Pottmann, A. Asperl, M. Hofer and A. Kilian:
Architectural Geometry.
Bentley Institute Press (2007), 724 pages, 2200 figures in color,
ISBN 978-1-934493-04-5.
Geometry lies at the core of the architectural design process. It is
omnipresent, from the initial form-finding stages to the actual
construction. Modern constructive geometry provides a variety of tools for
the efficient design, analysis, and manufacture of complex shapes. This
results in new challenges for architecture. However, the architectural
application also poses new problems to geometry. Architectural geometry is
therefore an entire research area, currently emerging at the border
between applied geometry and architecture.
This book has been written as a textbook for students of architecture or
industrial design. It comprises material at all levels, from the basics of
geometric modeling to the cutting edge of research. During the
architectural journey through geometry, topics typically reserved for a
mathematically well-trained audience are addressed in an easily
understandable way. These include central concepts on freeform curves and
surfaces, differential geometry, kinematic geometry, mesh processing,
digital reconstruction, and optimization of shapes.
This book is also intended as a geometry consultant for architects,
construction engineers, and industrial designers and as a source of
inspiration for scientists interested in applications of geometry
processing in architecture and art.
Editorial Work
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H. Pottmann, A. Kilian, M. Hofer (eds): Proceedings of the First
Advances in Architectural Geometry. Vienna, Austria, September 13-16,
2008. ISBN 978-3-902233-03-5. [PDF, 80MB] |
Scientific Publications
All publications
[
BibTeX file],
[
Pdf],
[
HTML].
2009
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H. Pottmann, A. Asperl, M. Hofer and A. Kilian: Architekturgeometrie.
Bentley & Springer (2009), to appear.
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S. Flöry and M. Hofer.
Surface Fitting and Registration
of Point Clouds using Approximations of the Unsigned Distance Function.
to appear in Computer Aided Geometric Design, 2009.
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B. Thuswaldner, S. Flöry, R. Kalasek, M. Hofer, Q.-X. Huang, H.
Thür.
Digital Anastylosis of the Octagon
in Ephesos. Journal on Computing and Cultural
Heritag (JOCCH), 2(1):1-27, 2009.
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2008
2007
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J. Wallner, H. Pottmann, and M. Hofer.
Fair webs.
The Visual Computer 23(1), 83-94, 2007.
Sketch at SIGGRAPH 2005:
Fair curve networks in nonlinear geometries.
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C.Y. Kao, M. Hofer, G. Sapiro, J. Stern, K. Rehm, and D.A. Rottenberg.
A geometric method for automatic extraction of sulcal fundi.
IEEE Trans. Medical Imaging Vol. 26(4):530-540, 2007. (Special
issue on Computational Neuroanatomy).
[IMA Nugget]
[Slides]
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M. Hofer.
Constrained optimization
with energy-minimizing curves and curve networks - a survey.
In M. Sbert, editor, Proceedings 23rd Spring Conference
on Computer Graphics, pages 31-39. Comenius University,
Bratislava, 2007.
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2006
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Q.-X. Huang, S. Flöry, N. Gelfand, M. Hofer, and H. Pottmann:
Reassembling Fractured Objects by Geometric Matching.
ACM Transactions on Graphics 25(3), 569-578, 2006 (Proc.
SIGGRAPH'06),
[Data],
[Slides],
[Slides in German],
[Fast Forward Video]
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M. Hofer, G. Sapiro, and J. Wallner.
Fair polyline networks for
constrained smoothing of digital terrain elevation data.
IEEE Transactions on Geoscience and Remote Sensing 44(10/2), 2983-2990, 2006.
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C.Y. Kao, M. Hofer, G. Sapiro, J. Stern, and D.A. Rottenberg.
A geometric method
for automatic extraction of sulcal fundi.
Proc. IEEE International Symposium on Biomedical
Imaging, (electronic), 1168-1171, 2006.
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2005
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M. Hofer, B. Odehnal, H. Pottmann, T. Steiner, and J. Wallner.
3D shape recognition and reconstruction based on line element
geometry. Proceedings of ICCV'05, Volume 2:1532-1538, 2005.
[Slides]
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H. Pottmann and M. Hofer.
A variational approach to spline curves on surfaces.
Computer Aided Geometric Design 22(7):693-709, 2005.
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H. Pottmann, S. Leopoldseder, M. Hofer, T. Steiner, and W. Wang.
Industrial Geometry: Recent Advances and Applications in CAD.
Computer-Aided Design 37(7):751-766, 2005.
(extended journal version)
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2004
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M. Hofer and H. Pottmann.
Energy-Minimizing Splines in Manifolds.
Transactions on Graphics 23(3):284-293, 2004.
(Proceedings of ACM SIGGRAPH 2004)
[Slides]
[Poster]
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H. Pottmann, S. Leopoldseder, M. Hofer, T. Steiner, and W. Wang.
Industrial Geometry: Recent Advances and Applications in CAD.
Computer-Aided Design Appl., 1:513-522, 2004.
(short proceedings version)
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H. Pottmann, M. Hofer, and B. Ravani.
Variational motion design.
In J. Lenarcic and C. Galletti, editors,
On Advances in Robot Kinematics,
pages 361--370. Kluwer 2004.
[Slides]
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M. Hofer, H. Pottmann, and B. Ravani.
From curve design algorithms to the design of rigid body motions.
The Visual Computer 20(5):279-297, 2004.
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H. Pottmann, S. Leopoldseder, and M. Hofer.
Registration without ICP.
Computer Vision and Image Understanding 95(1):54-71, 2004.
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H. Pottmann, T. Steiner, M. Hofer, C. Haider, and A. Hanbury.
The isophotic metric and its application to feature sensitive morphology on surfaces.
In T. Pajdla and J. Matas, editors, Computer Vision - ECCV 2004, Part IV,
LNCS 3024, pages 560-572, Springer, 2004.
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H. Pottmann, M. Hofer, B. Odehnal, and J. Wallner.
Line Geometry for 3D shape understanding and reconstruction.
In T. Pajdla and J. Matas, editors, Computer Vision - ECCV 2004, Part I,
LNCS 3021, pages 297-309, Springer, 2004.
[Poster]
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2003
2002
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H. Pottmann, S. Leopoldseder, and M. Hofer.
Simultaneous registration of multiple views of a 3D object.
ISPRS Archives 34(3A):265-270, 2002.
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H. Pottmann, S. Leopoldseder, and M. Hofer.
Approximation with active B-spline curves and surfaces.
In S. Coquillart, S.-M. Hu, and H.-Y. Shum, editors,
10th Pacific Conference on Computer Graphics and Applications,
pages 8-25. IEEE Press, 2002.
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M. Hofer, H. Pottmann, and B. Ravani.
Subdivision algorithms for motion design based on homologous points.
In: J. Lenarcic and F. Thomas, editors,
Advances in Robot Kinematics, pages 235-244.
Kluwer Academic Publ., 2002.
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T.J. Murphy, J.J. White, B.J. Kline, E. Black, R. Goodman, M. Hofer.
Using Mathematica with Multivariable Calculus.
Proc. Amer. Soc. Engng. Educ. Annual Conference and Expo,
Charlotte, NC, 1999.
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Technical Reports
Ph.D. Thesis
Master Thesis
Research Interests
My research focuses on the solution of current geometric problems in the
areas of geometric modeling and processing, computer aided geometric
design, computer graphics, computer vision, and imaging science.
Education
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Dr. techn. in Mathematics,
TU Wien,
3/05, advisor Prof. Helmut Pottmann
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Mag. rer. nat. (M.Sc.) in Mathematics and Geometry,
TU Graz, 7/00
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Studies of Mathematics,
University of Oklahoma,
USA, 8/98-5/99
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Studies of Mathematics and Descriptive Geometry,
University of Graz and
TU Graz, 10/94-7/98, 6/99-7/00
Professional Experience
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Lecturer
Vienna University of Technology
3/09 -
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Postdoctoral Researcher (FWF Projects S92, P18865),
Faculty of Mathematics and Geoinformation,
TU Wien,
10/05 - 08/08
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Postdoctoral Associate (Prof. Guillermo Sapiro),
Department of Electrical and Computer Engineering,
University of Minnesota,
4/05 - 9/05
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Research Associate (FWF Project P16002, Prof. Helmut Pottmann),
Faculty of Mathematics and Geoinformation,
TU Wien,
1/04 - 3/05
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Research Associate (FWF Project P16002, Prof. Helmut Pottmann),
Institute of Geometry,
TU Wien,
12/02 - 12/03
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Research Associate (Prof. Bahram Ravani),
Department of Mechanical and Aeronautical Engineering,
UC Davis, USA,
8/02 - 11/02
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Research and Teaching Assistant ('Vertragsassistent'),
Institute of Geometry,
TU Wien,
8/00 - 7/02
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Teaching Assistant ('Studienassistent'),
Institute of Geometry,
TU Graz,
10/97 - 6/98
Grants
- 2008-2011: Innovative Project "Advancing 3D Scanning and
Technology" (Research Team Member).
- 2007-2010: FIT-IT Visual Computing (FFG) grant 813391
"Multilayer Freeform Structures".
(Administrative Project management)
- 2006-2009: Austrian Science Fund (FWF) grant P18865 "Constrained
Optimization with Geometric Objects". (Project leader)
- 2005-2008: Innovative Project "Geometric Model Building with CNC Technology" (Research team member).
- 2002-2004: Innovative Project "3D Technology" (Project management & Research team member).
Honors
- 2005: Best PhD thesis award by the Austrian Mathematical Society
- 2002: Research Scholarship, Austrian Academic Exchange (Ph.D)
- 2000: Excellent master thesis award by the Styrian Goverment (M.Sc.)
- 2000: Excellence Fellowship, University of Graz (B.Sc, M.Sc.)
- 1999: President's Honor List, University of Oklahoma (B.Sc, M.Sc.)
Professional Activities
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2008: Conference Co-Chair, Advances in Architectural Geometry,
Vienna, Austria.
AAG'08
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2007: International Program Committee, Shape Modeling International
'07 Conference, Lyon, France. SMI'07
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2006: Workshop organizing committee:
Geometric Design for Complex Architecture
Selected Scientific Talks
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Spring Conference on Computer Graphics, April 2007
(invited talk)
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Technical University of Darmstadt, December 2006
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SIAM Conference on Geometric Design and Computing, November 2005
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ACM SIGGRAPH Conference,
August 2005 (Sketch presentation)
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Berlin Colloquium for Scientific Visualization, December 2004
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ACM SIGGRAPH Conference, August 2004 (Paper presentation)
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Dagstuhl Seminar, March 2004
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The University of Western Australia Pure Math Seminar, February 2004
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SIAM Conference on Geometric Design and Computing, November 2003
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Duke University Algorithms Seminar, November 2002
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SIAM Conference on Geometric Design and Computing, November 2001
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Caltech Computer Science Seminar, October 2001
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Prag Technical University CMP Seminar, November 2000
(c) M. Hofer, September 16, 2009.
http://www.geometrie.tuwien.ac.at/hofer/