VIS - Magnus Strengert - Parallel Visualization, GPU-Raycasting

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Universität Stuttgart

	Institut für Visualisierung und Interaktive Systeme
	Magnus Strengert

Room: 1.061

University of Stuttgart

Visualization and Interactive Systems Group

Universitätsstrasse 38

70569 Stuttgart

Germany

Tel: +49 (0)711 7816-468

Fax: +49 (0)711 7816-340

E-mail: Magnus.Strengert@informatik.uni-stuttgart.de

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	Research
	Images
	Teaching
	Advised theses
	Publications


Research



	My current research project is part of the Sonderforschungsbereich 382: Verfahren und Algorithmen zur Simulation physikalischer Prozesse auf Höchstleistungsrechnern, that deals with the simulation and visualization of physical processes on supercomputers. My work is part of the subproject D8: Visualisierung auf Cluster-Computern. The goal of this project is to interactively visualize large, time-dependent volume or vector data sets with the help of GPU-based cluster computers. Another research project deals with Graphics-Hardware-based Raycasting of volumetric data sets utilizing Shader Model 3.0 functionality of recent GPUs. Further details on GPU-Raycasting, the accompaning paper as well as executables and the complete source code are available here. My latest project was doing research and development for an OpenGL GLSL Shader Debugger. The goal is to enable debugging of hardware-generated data throughout the complete shader pipeline, including vertex, geometry, and fragment shaders. More information on this project can be found on the glsldevil webpage.


Images


	These are some sample images taken during development and at the current state of the GPU-Raycasting framework. More images can be found at the project site.




	The following images were rendered using an extension based on the Kubelka-Munk theory to include effects of spectral volume rendering in our GPU-Raycasting framework.



	Example images from a simple path tracer written for the lecture on image synthesis/rendering.


Teaching


	Winter Term 07	Lecture Assignments: Advanced Realtime Rendering Techniques
	Summer Term 07	Lecture Assignments: Visualization
	Winter Term 06/07	Hauptseminar: Video Processing Algorithms
	Summer Term 06	Lecture Assignments: Visualization
	Winter Term 05/06	Hauptseminar: GPU-Based Algorithms and Visualization Techniques
	Summer Term 05	Lecture Assignments: Image Synthesis/Rendering
	Winter Term 04/05	Graphic- and GPU-Programming Lab Seminar: Algorithms for Computer Games
	Summer Term 04	Graphic- and GPU-Programming Lab


Advised student theses

Diplomarbeit: Steffen Frey, 2008
Diplomarbeit: Markus Hocke, 2008
Diplomarbeit: Markus Üffinger, 2007
Diplomarbeit: Jens Nausedat, 2006
Hardwarebasierte Techniken zur 2D Videoverarbeitung
(Hardware-based techniques for 2D video processing)
Studienarbeit: Torsten Wolff, 2006
Verteilte Videogenerierung auf GPU-Clustern für die webbasierte Analyse medizinischer Daten
(Distributed video generation for web-based analysis of medical data using GPU-clusters)
Diplomarbeit: Christoph Müller, 2005
Verteiltes Volumen-Raycasting auf GPU-Clustern mit adaptivem Load-Balancing.
(Parallel volume raycasting on GPU-clusters with adaptive load-balancing)
Diplomarbeit: Sven Bachthaler, 2005
Parallele GPU-basierte Vektorfeldvisualisierung auf gekrümmten Flächen.
(Parallel GPU-based vector field visualization on curved surfaces)
Diplomarbeit: Felix Müller, 2005
Verteilte Visualisierung und Kompression zeitabhängiger Volumendatensätze.
(Distributed visualization and compression of time-dependant volume data sets)


Publications



	2008
			C. Müller, S. Frey, M. Strengert, C. Dachsbacher, and T. Ertl A Compute Unified System Architecture for Graphics Clusters Incorporating Data-Locality IEEE Transactions on Visualization and Computer Graphics accepted for publication [doi] \| [ps] \| [pdf] \| [bibtex]

			M. Ueffinger, T. Klein, M. Strengert, and T. Ertl GPU-Based Streamlines for Surface-Guided 3D Flow Visualization Workshop on Vision, Modelling, and Visualization (VMV'06) Konstanz, Germany, pp.??-??, 2008 [ps] \| [pdf] \| [bibtex]

			M. Strengert, C. Müller, C. Dachsbacher, and T. Ertl CUDASA: Compute Unified Device and Systems Architecture Eurographics 2008 Symposium on Parallel Graphics and Visualization (EGPGV'08) Crete, Greece, pp.49-56, 2008 [ps] \| [pdf] \| [bibtex]
	2007
			M. Strengert, T. Klein, and T. Ertl A Hardware-Aware Debugger for the OpenGL Shading Language ACM Siggraph/Eurographics Workshop on Graphics Hardware 2007 (GH'07) San Diego, California, USA, pp.81-88, 2007 [ps] \| [pdf] \| [bibtex]

			M. Kraus, and M. Strengert Depth-of-Field Rendering by Pyramidal Image Processing Computer Graphics Forum, 26(3), Eurographics 2007 Prague, Czech Republic, pp.645-654, 2007 [ps] \| [pdf] \| [bibtex] \| [video]

			B. Moloney, D. Weiskopf, T. Möller, and M. Strengert Scalable Sort-First Parallel Direct Volume Rendering with Dynamic Load Balancing. Eurographics Symposium on Parallel Graphics and Visualization (EGPGV'07) Lugano, Switzerland, pp.45-52, 2007 [ps] \| [pdf] \| [bibtex]

			M. Kraus, M. Strengert, T. Klein and T. Ertl. Adaptive Sampling in Three Dimensions for Volume Rendering on GPUs. Asia-Pacific Symposium on Visualisation (APVIS'07) Sydney, Australia, pp.113-120, 2007 [ps] \| [pdf] \| [bibtex]

			M. Kraus, M. Eissele, and M. Strengert GPU-Based Edge-Directed Image Interpolation. Scandinavian Conference on Image Analysis (SCIA'07) Aalborg, Denmark, pp.532-541, 2007 [ps] \| [pdf] \| [bibtex]

			C. Müller, M. Strengert, and T. Ertl. Adaptive Load Balancing for Raycasting of Non-Uniformly Bricked Volumes. Journal of Parallel Computing, Special Issue on Parallel Graphics and Visualization Volume 33, Issue 6, June 2007, pp. 406-419 [doi] \| [pdf] \| [bibtex]

			M. Kraus, and M. Strengert. Pyramid Filters Based on Bilinear Interpolation. Conference on Computer Graphics Theory and Applications (GRAPP'07) Barcelona, Spain, volume GM-R, pp.21-28, 2007 [ps] \| [pdf] \| [bibtex]
	2006
			M. Strengert, M. Kraus, and T. Ertl. Pyramid Methods in GPU-Based Image Processing. Workshop on Vision, Modelling, and Visualization (VMV'06) Aachen, Germany, pp.169-176, 2006 [ps] \| [pdf] \| [bibtex]

			M. Strengert, T. Klein, R. Botchen, S. Stegmaier, M. Chen, and T. Ertl. Spectral Volume Rendering using GPU-based Raycasting. The Visual Computer, 22, 8, pp. 550-561, 2006 The original publication is available at www.springerlink.com [doi] \| [pdf] \| [bibtex]

			C. Müller, M. Strengert, and T. Ertl. Optimized Volume Raycasting for Graphics-Hardware-based Cluster Systems. Eurographics Symposium on Parallel Graphics and Visualization (EGPGV'06) Braga, Portugal, pp.59-66, 2006 [ps] \| [pdf] \| [bibtex]

			S. Bachthaler, M. Strengert, D. Weiskopf, and T. Ertl. Parallel Texture-Based Vector Field Visualization on Curved Surfaces Using GPU Cluster Computers. Eurographics Symposium on Parallel Graphics and Visualization (EGPGV'06) Braga, Portugal, pp.75-82, 2006 [ps] \| [pdf] \| [bibtex]
	2005
			T. Klein, M. Strengert, S. Stegmaier, and T. Ertl. Exploiting Frame-to-Frame Coherence for Accelerating High-Quality Volume Raycasting on Graphics Hardware. IEEE Visualization 2005 (VIS'05) Minneapolis, Minnesota, USA, pp.223-230, 2005 [ps] \| [pdf] \| [bibtex]

			S. Stegmaier, M. Strengert, T. Klein, and T. Ertl. A Simple and Flexible Volume Rendering Framework for Graphics-Hardware-based Raycasting. Volume Graphics 2005 (VG'05) Stony Brook, New York, USA, pp.187-195, 2005 [ps] \| [pdf] \| [bibtex]

			M. Strengert, M. Magallón, D. Weiskopf, S. Guthe, and T. Ertl. Large Volume Visualization of Compressed Time-Dependent Datasets on GPU Clusters. Journal of Parallel Computing, Special Issue on Parallel Graphics and Visualization Volume 31, Issue 2, February 2005, pp. 205-219 [doi] \| [pdf] \| [bibtex]
	2004
			M. Strengert, M. Magallón, D. Weiskopf, S. Guthe, and T. Ertl. Hierarchical Visualization and Compression of Large Volume Datasets Using GPU Clusters. Eurographics Symposium on Parallel Graphics and Visualization (EGPGV'04) Grenoble, France, pp.41-48, 2004 [ps] \| [pdf] \| [bibtex]
	2003
			F. Enders, M. Strengert, S. Iserhardt-Bauer, U. E. Aladl, and P. J. Slomka. Interactive Volume Rendering of Multimodality 4D Cardiac Data with the Use of Consumer Graphics Hardware. Medical Imaging 2003: Visualization, Image-Guided Procedures, and Display (MI'03) San Diego, California, USA, pp.119-128, 2003 [doi]