Ralf Sarlette

Researcher WG Klein
Endenicher Allee 19A, Room
D-53115 Bonn
Phone: +49 (0) 228 73-4730
Fax: +49 (0) 228 73-4212
Email: sarlette@REMOVETHISPART.cs.uni-bonn.de

Ongoing Projects

The image-based acquisition of complex optical material properties is one of the major research topics in our group. The goal of this project is the development of novel techniques for the efficient and high-fidelity capture of high-dimensional material representations like, e.g. the bidirectional texture function (BTF). Example data is publicy available at the BTF database Bonn.
To correctly simulate materials under arbitrary illumination, the light simulation in a virtual scene must be calculated on a pure spectral basis. This is already done in modern rendering systems. For a few classes of materials spectral reflectance data is already acquired for a few light and view directions using spectrometers and gonioreflectometer setups. This is sometimes enough to fit analytical models to the measured data. But for anisotropic materials or for materials with strong variations in angular or spatial domain there are currently no measurement setups at hand. Similar setups like the ones based on RGB CCD cameras are impractical for spectral measurements because of the high costs of cameras and light sources needed for spectral measurements. In this project we plan to combine RGB and spectral measurement methods to come up with an efficient and pratical measurement setup for spectral BTFs. Furthermore, algorithm for analysis, compression and efficient rendering for such RGB-spectral-combined data will be investigated.

Completed Projects


Katharina Stollenwerk, Anna Vögele, Ralf Sarlette, Björn Krüger, André Hinkenjann, and Reinhard Klein
In proceedings of 13. Workshop Virtuelle Realität und Augmented Reality der GI-Fachgruppe VR/AR, Bielefeld, Germany, Sept. 2016
Holly Rushmeier and Reinhard Klein (Editors)
In proceedings of Eurographics Workshop on Material Appearance Modeling: Issues and Acquisition, Zaragoza, Spain, pages 25-31, Eurographics Association, June 2013
In proceedings of SIGGRAPH Asia 2011 Sketches, Hong Kong, China, pages 28:1-28:2, ACM, Dec. 2011
In proceedings of CGIV 2010, Society for Imaging Science and Technology, Joensuu, Finland, pages 326-330, June 2010
M. Magnor, B. Rosenhahn, and H. Theisel (Editors)
In proceedings of Vision, Modeling, and Visualization, pages 11-18, Nov. 2009
R. Scopigno and E. Gröller (Editors)
In: Computer Graphics Forum (Apr. 2008), 27:2(527-536)
D. Cohen-Or and P. Slavík (Editors)
In: Computer Graphics Forum (Sept. 2007), 26:3(467-476)
J. Kautz and S. Pattanaik (Editors)
In proceedings of Eurographics Symposium on Rendering 2007, The Eurographics Association, June 2007
E. Gröller and L. Szirmay-Kalos (Editors)
In: Computer Graphics Forum (Sept. 2006), 25:3
In proceedings of Second Symposium on Applied Perception in Graphics and Visualization (APGV 05), 2005
M. Wacker, M. Keckeisen, S. Kimmerle, W. Straßer, V. Luckas, C. Groß, A. Fuhrmann, Ralf Sarlette, Mirko Sattler, and Reinhard Klein
In: Special Issue of Research Journal of Textile and Apparel: Virtual Clothing Technology and Applications (2005), 9:1
K. Anjyo and P. Faloutsos (Editors)
In proceedings of Eurographics/ACM SIGGRAPH Symposium on Computer Animation (2005), The Eurographics Association, July 2005
In: Computer Graphics Forum (Mar. 2005), 24:1(83-109)
M. Wacker, M. Keckeisen, S. Kimmerle, W. Straßer, V. Luckas, C. Groß, A. Fuhrmann, Mirko Sattler, and Ralf Sarlette
In: Informatik-Spektrum (Dec. 2004), 27:6
B. Girod, M. Magnor, and H.-P. Seidel (Editors)
In proceedings of Vision, Modeling, and Visualization 2004, pages 331-338, Akademische Verlagsgesellschaft Aka GmbH, Berlin, Nov. 2004
Christophe Schlick and Werner Purgathofer (Editors)
In proceedings of Eurographics 2004, State of the Art Reports, pages 69-94, INRIA and Eurographics Association, Sept. 2004
Jan Meseth, Gero Müller, Mirko Sattler, Ralf Sarlette, A. Artusi, A. Wilkie, G. Zotti, Reinhard Klein, and Werner Purgathofer
CGI 2004 tutorial, June 2004
In proceedings of Computer Graphics International 2004 (CGI 2004), pages 514-517, IEEE Computer Society, June 2004
J. Kautz, Mirko Sattler, Ralf Sarlette, Reinhard Klein, and H.-P. Seidel
In proceedings of Graphics Interface 2004, May 2004
P. Brunet and D. Fellner (Editors)
In proceedings of Eurographics 2003 Industrial and Project Presentations, Sept. 2003
In proceedings of Eurographics Symposium on Rendering 2003, June 2003
M. Hauth, O. Etzmuss, B. Eberhardt, Reinhard Klein, Ralf Sarlette, Mirko Sattler, K. Daubert, and J. Kautz
In proceedings of Proceedings of Eurographics 2002 Tutorials, The Eurographics Association, Sept. 2002
J. Vince and R. Earnshaw (Editors)
In: Advances in Modelling, Animation and Rendering, Computer Graphics Society (CGS), pages 465-480, Springer Verlag, July 2002