EuroVis 2009 Eurographics / IEEE-VGTC Symposium on Visualization 2009 Berlin, Germany 10 - 12 June 2009 Organized by EUROGRAPHICS THE EUROPEAN ASSOCIATION FOR COMPUTER GRAPHICS IEEE Visualization and Graphics Technical Committee Symposium Co-Chairs Hans-Christian Hege (Zuse Institute Berlin, Germany) Ingrid Hotz (Zuse Institute Berlin, Germany) Tamara Munzner (University of British Columbia, Canada) Steering Committee Dirk Bartz (University of Leipzig, Germany) Thomas Ertl (Universität Stuttgart, Germany) Eduard Gröller (Vienna University of Technology, Austria) Daniel Keim (University of Konstanz, Germany) Ronald Peikert (Swiss Federal Institute of Technology Zurich, Switzerland) Frits H. Post (Delft University of Technology, The Netherlands)
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EuroVis 2009Eurographics / IEEE-VGTC Symposium on Visualization 2009
Berlin, Germany
10 - 12 June 2009
Organized by
EUROGRAPHICSTHE EUROPEAN ASSOCIATION
FOR COMPUTER GRAPHICS
IEEE Visualization and Graphics TechnicalCommittee
Symposium Co-Chairs
Hans-Christian Hege (Zuse Institute Berlin, Germany)Ingrid Hotz (Zuse Institute Berlin, Germany)
Tamara Munzner (University of British Columbia, Canada)
Steering Committee
Dirk Bartz (University of Leipzig, Germany)Thomas Ertl (Universität Stuttgart, Germany)
Eduard Gröller (Vienna University of Technology, Austria)Daniel Keim (University of Konstanz, Germany)
Ronald Peikert (Swiss Federal Institute of Technology Zurich, Switzerland)Frits H. Post (Delft University of Technology, The Netherlands)
Eurographics/ IEEE-VGTC Symposium on Visualization 2009H.-C. Hege, I. Hotz, and T. Munzner(Guest Editors)
Volume 28 (2009), Number 3
Official Supporters
Eurographics/ IEEE-VGTC Symposium on Visualization 2009H.-C. Hege, I. Hotz, and T. Munzner(Guest Editors)
Volume 28 (2009), Number 3
Preface
EuroVis 2009, the 11th Eurographics/IEEE-VGTC Symposium on Visualization, was held in Berlin,Germany from June 10-12 2009. The conference proceedings are published as a special issue of theEurographics journal Computer Graphics Forum. This symposium, known as VisSym for its first sixyears, has been known as EuroVis since 2005.
The symposium is international in scope, with submissions from 21 countries in five continents. EuroVisattracts papers that cover the field of visualization broadly, including techniques for spatial data such asvolumetric datasets; for tensor and vector field visualization; and for non-spatial data such as graphs,text, and high-dimensional datasets. Other topics include the theory of visualization, hardware accelera-tion, large datasets, perception, interaction and user studies, and visual analytics. We also solicit paperscovering application areas for visualization.
The 143 submitted manuscripts were reviewed in a two-stage process that culminated with 41 papersaccepted, for an acceptance rate of 29%. In the first cycle each paper was reviewed by at least fourreviewers. The primary and secondary reviewers were members of the International Program Committee,and the primary recruited two additional tertiary reviewers from outside the committee. Based on theserecommendations, after considerable deliberation the chairs conditionally accepted 43 papers. In thesecond cycle, the revised papers were further reviewed by the primary reviewer, and 41 were acceptedfor publication. The review process was double-blind for the secondary and tertiary reviewers: onlythe primary reviewer and the chairs knew the identity of the authors. Submissions where the co-chairshad a conflict (as authors or collaborators) were completely blinded from their view and the decisionswere done by the other co-chairs. Seven papers from the 143 submission were fast-tracked for potentialpublication in a future issue of Computer Graphics Forum conditional to major revisions.
We deeply appreciate the hard work of the members of the International Program Committee, the manyadditional tertiary reviewers, and the Best Paper Committee, listed below. We also thank Stefanie Behnkefor her tireless support of the Submission and Review Management (SRM) system, which we used forthe entire reviewing and publication process. We thank the authors of both the submitted and acceptedpapers, and all of the conference attendees. Finally, we thank our supporters for their tremendous helpin making the event a success. The generous contribution of nVidia, Zuse Institute Berlin and the DFGResearch Center Matheon have made possible an attractive best paper award, the high quality printing ofthese proceedings, and support for invitations.
We hope that you enjoy reading this collection of strong visualization papers.
Hans-Christian Hege, Ingrid Hotz, Tamara MunznerEuroVis 2009 Co-Chairs
Eurographics/ IEEE-VGTC Symposium on Visualization 2009H.-C. Hege, I. Hotz, and T. Munzner(Guest Editors)
Volume 28 (2009), Number 3
International Programme Committee
Archambault, Daniel (INRIA Bordeaux Sud-Ouest, France)Auber, David (LaBRI, Université Bordeaux, France)Bak, Peter (University of Konstanz, Germany)Botha, Charl (Delft University of Technology, The Netherlands)Brodlie, Ken (University of Leeds, UK)Bruckner, Stefan (Vienna University of Technology, Austria)Carr, Hamish (University College Dublin, Ireland)Chen, Min (Swansea University, UK)Comba, Joao (Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil)Doleisch, Helmut (SimVis Gmbh, Vienna, Austria)Ertl, Tom (Universität Stuttgart, Germany)Fekete, Jean-Daniel (INRIA Unité de Recherche Futurs, Orsay, France)Fujishiro, Issei (Keio University, Tokyo, Japan)Garth, Christoph (University of California, Davis CA, USA)Gröller, Eduard (Vienna University of Technology, Austria)Hadwiger, Markus (VRVis Research Center, Vienna, Austria)Hagen, Hans (Technical University of Kaiserslautern, Germany)Healey, Christopher (North Carolina State University, Raleigh NC, USA)Hering-Bertram, Martin (Fraunhofer ITWM, Kaiserslautern, Germany)Joy, Ken (University of California, Davis CA, USA)Kosara, Robert (University of North Carolina, Charlotte NC, USA)Kraus, Martin (Technische Universität München, Germany)Lanza, Michele (University of Lugano, Switzerland)Linsen, Lars (Jacobs University, Bremen, Germany)Ma, Kwan-Liu (University of California, Davis CA, USA)Machiraju, Raghu (Ohio State University, Columbus OH, USA)Matkovic, Kresimir (Vienna University of Technology, Austria)Melançon, Guy (LaBRI, Université Bordeaux, France)Meyer, Joerg (University of California, Irvine CA, USA)Minghim, Rosane (Universidade de São Paulo, Brazil)Möller, Torsten (Simon Fraser University, Vancouver, Canada)Mueller, Klaus (State University of New York, Stony Brook NY, USA)Natarajan, Vijay (Indian Institute of Science, Bangalore, India)Oliveira, Manuel M. (Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil)Pajarola, Renato (University of Zurich, Switzerland)Pang, Alex (University of California, Santa Cruz CA, USA)Pascucci, Valerio (University of Utah, Salt Lake City UT, USA)Peikert, Ronald (Swiss Federal Institute of Technology, Zurich, Switzerland)Polthier, Konrad (Free University, Berlin, Germany)
Eurographics/ IEEE-VGTC Symposium on Visualization 2009H.-C. Hege, I. Hotz, and T. Munzner(Guest Editors)
Volume 28 (2009), Number 3
International Programme Committee
Preim, Bernhard (Otto von Guericke University of Magdeburg, Germany)Prohaska, Steffen (Zuse Institute Berlin, Germany)Reiterer, Harald (University of Konstanz, Germany)Rheingans, Penny (University of Maryland, Baltimore County MD, USA)Roerdink, Jos (University of Groningen, The Netherlands)Rogowitz, Bernice (IBM Thomas J. Watson Research Center, Yorktown Heights, NY, USA)Ropinski, Timo (University of Münster, Germany)Schreck, Tobias (Technical University Darmstadt, Germany)Schumann, Heidrun (University of Rostock, Germany)Silva, Claudio (University of Utah, Salt Lake City UT, USA)Sips, Mike (Stanford University, Stanford, CA, USA)Takahashi, Shigeo (University of Tokyo, Japan)Telea, Alex (Eindhoven University of Technology, The Netherlands)Theisel, Holger (Otto von Guericke University of Magdeburg, Germany)Tricoche, Xavier (Purdue University, West Lafayette IN, USA)van de Ville, Dimitri (Swiss Federal Institute of Technology Lausanne, Switzerland)Viola, Ivan (University of Bergen, Norway)Ware, Colin (University of New Hampshire, Durham NH, USA)Weber, Gunther (Lawrence Berkeley National Lab, Berkeley CA, USA)Weinkauf, Tino (Zuse Institute Berlin, Germany)Weiskopf, Daniel (Universität Stuttgart, Germany)Whitaker, Ross (University of Utah, Salt Lake City UT, USA)van Wijk, Jarke (Eindhoven University of Technology, The Netherlands)Wood, Jo (City University London, UK)Ynnerman, Anders (Linköping University, Sweden)
Eurographics/ IEEE-VGTC Symposium on Visualization 2009H.-C. Hege, I. Hotz, and T. Munzner(Guest Editors)
Eurographics/ IEEE-VGTC Symposium on Visualization 2009H.-C. Hege, I. Hotz, and T. Munzner(Guest Editors)
Volume 28 (2009), Number 3
Cover Image Credits
back cover (from left to right, from top to bottom):
Stefan Lindholm, Patric Ljung, Markus Hadwiger, and Anders Ynnerman:“Fused Multi-Volume DVR using Binary Space Partitioning”, pp. 847 – 854
Paolo Simonetto, David Auber, and Daniel Archambault:“Fully Automatic Visualisation of Overlapping Sets”, pp. 967 – 974
Songhua Xu, Wenxia Yang, and Francis C.M. Lau:“A Visualization Based Approach for Digital Signature Authentication”, pp. 935 – 942
Hong Zhou, Weiwei Cui, Huamin Qu, Yingcai Wu, Xiaoru Yuan, and Wei Zhuo:“Splatting the Lines in Parallel Coordinates”, pp. 759 – 766
Jonathan Woodring and Han-Wei Shen:“Semi-Automatic Time-Series Transfer Functions via Temporal Clustering and Sequencing”,pp. 791 – 798
Konstantin Poelke and Konrad Polthier:“Lifted Domain Coloring”, pp. 735 – 742
Harald Sanftmann and Daniel Weiskopf:“Illuminated 3D Scatterplots”, pp. 751 – 758
Eurographics/ IEEE-VGTC Symposium on Visualization 2009H.-C. Hege, I. Hotz, and T. Munzner(Guest Editors)
Volume 28 (2009), Number 3
TABLE OF CONTENTS
Functions
Interactive Visualization of Function Fields by Range-Space SegmentationJohn C. Anderson, Luke J. Gosink, Mark A. Duchaineau, and Ken I. Joy
727
Lifted Domain ColoringKonstantin Poelke and Konrad Polthier
735
Scatterplots
Efficient and Adaptive Rendering of 2-D Continuous ScatterplotsSven Bachthaler and Daniel Weiskopf
743
Illuminated 3D ScatterplotsHarald Sanftmann and Daniel Weiskopf
751
Splatting the Lines in Parallel CoordinatesHong Zhou, Weiwei Cui, Huamin Qu, Yingcai Wu, Xiaoru Yuan, and Wei Zhuo
759
iPCA: An Interactive System for PCA-based Visual AnalyticsDong Hyun Jeong, Caroline Ziemkiewicz, Brian Fisher, William Ribarsky, andRemco Chang
767
Volume Rendering
Instant Volume Visualization using Maximum Intensity Difference AccumulationStefan Bruckner and M. Eduard Gröller
775
Bivariate Transfer Functions on Unstructured GridsYuyan Song, Wei Chen, Ross Maciejewski, Kelly P. Gaither, and David S. Ebert
783
Semi-Automatic Time-Series Transfer Functions via Temporal Clustering and Se-quencingJonathan Woodring and Han-Wei Shen
791
Direct Visualization of Deformation in VolumesStef Busking, Charl P. Botha, and Frits H. Post
799
Multidimensional Data
The Gödel Engine - An Interactive Approach to Visualization in General RelativityFrank Grave, Thomas Müller, Carsten Dachsbacher, and Günter Wunner
807
Visualisation of Sensor Data from Animal MovementEdward Grundy, Mark W. Jones, Robert S. Laramee, Rory P. Wilson, and Emily L.C. Shepard
815
MultiClusterTree: Interactive Visual Exploration of Hierarchical Clusters in Multi-dimensional Multivariate DataTran Van Long and Lars Linsen
823
Selecting Good Views of High-dimensional Data using Class ConsistencyMike Sips, Boris Neubert, John P. Lewis, and Pat Hanrahan
831
Eurographics/ IEEE-VGTC Symposium on Visualization 2009H.-C. Hege, I. Hotz, and T. Munzner(Guest Editors)
Volume 28 (2009), Number 3
TABLE OF CONTENTS
Volume Rendering & Hardware Acceleration
Accelerating Volume Raycasting using Proxy SpheresBaoquan Liu, Gordon J. Clapworthy, and Feng Dong
839
Fused Multi-Volume DVR using Binary Space PartitioningStefan Lindholm, Patric Ljung, Markus Hadwiger, and Anders Ynnerman
847
A Directional Occlusion Shading Model for Interactive Direct Volume RenderingMathias Schott, Vincent Pegoraro, Charles Hansen, Kévin Boulanger, and KadiBouatouch
855
Flow Visualization
Hierarchical Vortex Regions in Swirling FlowChristoph Petz, Jens Kasten, Steffen Prohaska, and Hans-Christian Hege
863
Smooth Stream Surfaces of Fourth Order PrecisionDominic Schneider, Alexander Wiebel, and Gerik Scheuermann
871
Volume Deformations in Grid-Less Flow SimulationsHarald Obermaier, Martin Hering-Bertram, Jörg Kuhnert, and Hans Hagen
879
Biomedical Visualization
Context-aware Volume Modeling of Skeletal MusclesZhicheng Yan, Wei Chen, Aidong Lu, and David S. Ebert
887
Combining Map Displays and 3D Visualizations for the Analysis of Scalar Data onCerebral Aneurysm SurfacesMathias Neugebauer, Rocco Gasteiger, Oliver Beuing, Volker Diehl, Martin Skalej,and Bernhard Preim
895
Visual Analysis of Brain Activity from fMRI DataFirdaus Janoos, Boonthanome Nouanesengsy, Raghu Machiraju, Han Wei Shen,Steffen Sammet, Michael Knopp, and István Á. Mórocz
903
User Studies and Interaction
Preconceptions and Individual Differences in Understanding Visual MetaphorsCaroline Ziemkiewicz and Robert Kosara
911
Comparing Parameter Manipulation with Mouse, Pen, and Slider User InterfacesColin Swindells, Melanie Tory, and Rebecca Dreezer
919
Extended Excentric LabelingEnrico Bertini, Maurizio Rigamonti, and Denis Lalanne
927
Applications
A Visualization Based Approach for Digital Signature AuthenticationSonghua Xu, Wenxia Yang, and Francis C.M. Lau
935
Eurographics/ IEEE-VGTC Symposium on Visualization 2009H.-C. Hege, I. Hotz, and T. Munzner(Guest Editors)
Volume 28 (2009), Number 3
TABLE OF CONTENTS
SDViz: A Context-Preserving Interactive Visualization System for Technical Dia-gramsInsoo Woo, SungYe Kim, Ross Maciejewski, David S. Ebert, Timothy D. Ropp,Krystal Thomas
943
Visualization Techniques for Schedule ComparisonDandan Huang, Melanie Tory, Sheryl Staub-French, and Rachel Pottinger
951
Visualization of Vessel MovementsNiels Willems, Huub van de Wetering, and Jarke J. van Wijk
959
Graph Visualization
Fully Automatic Visualisation of Overlapping SetsPaolo Simonetto, David Auber, and Daniel Archambault
967
Visualizing the Evolution of Compound Digraphs with TimeArcTreesMartin Greilich, Michael Burch, and Stephan Diehl
975
Force-Directed Edge Bundling for Graph VisualizationDanny Holten and Jarke J. van Wijk
983
Scalable, Versatile and Simple Constrained Graph LayoutTim Dwyer
991
Geometry & Reconstruction
Enclosing Surfaces for Point Clusters Using 3D Discrete Voronoi DiagramsPaul Rosenthal and Lars Linsen
999
On Visualization and Reconstruction from Non-Uniform Point Sets using B-splinesErald Vuçini, Torsten Möller, and M. Eduard Gröller
1007
Quasi-interpolation on the Body Centered Cubic LatticeAlireza Entezari, Mahsa Mirzargar, and Leila Kalantari
1015
High-Quality Volumetric Reconstruction on Optimal Lattices for Computed Tomog-raphyBernhard Finkbeiner, Usman R. Alim, Dimitri Van De Ville, and Torsten Möller
1023
Text Visualization
Collaborative Brushing and Linking for Co-located Visual Analytics of DocumentCollectionsPetra Isenberg and Danyel Fisher
1031
DocuBurst: Visualizing Document Content using Language StructureChristopher Collins, Sheelagh Carpendale, and Gerald Penn
1039
The Chinese Room: Visualization and Interaction to Understand and Correct Am-biguous Machine TranslationJoshua Albrecht, Rebecca Hwa, and G. Elisabeta Marai
1047
Eurographics/ IEEE-VGTC Symposium on Visualization 2009H.-C. Hege, I. Hotz, and T. Munzner(Guest Editors)
Volume 28 (2009), Number 3
Keynote
Systems of Thought:When to Use Visual Representations in Problem Solving
Pat Hanrahan
Canon ProfessorComputer Graphics Laboratory, Stanford University
AbstractMany prominent computer scientists have proposed that every student should learn “computational think-ing.” Computational thinking involves learning how to use computers to solve problems. It involves learn-ing how to choose and design algorithms tailored to the problem, and how to build computer systems thatimplement these algorithms.
How does visual thinking fit into this broader effort? In this talk I will argue that both computationaland visual thinking are examples of different “systems of thought.” A system of thought is a set ofideas and representations that help us efficiently structure our thinking. Others examples of systems ofthought include logic, mathematics, and language. Each of these systems of thought has strengths andweaknesses.
There are problems where a visual representation immediately leads to the right answer. Unfortunately,many proponents of visualization advocate its use even though there are better approaches to solvingthe same problem. Furthermore, even if visualization is the appropriate tool, the most important firststep is deciding how to depict the information. There are many subtle trade-offs in the choice of visualrepresentation. Finally, experts often use multiple systems of thought synergistically. Many of the bestexamples of visualization occur when it is coupled with other ways of thinking.
Short BiographyPat Hanrahan is the CANON Professor of Computer Science and Electrical Engineering at Stanford Uni-versity where he teaches computer graphics. His current research involves visualization, image synthesis,virtual worlds, and graphics systems and architectures. Before joining Stanford he was a faculty memberat Princeton.
Pat has also worked at Pixar where he developed developed volume rendering software and was the chiefarchitect of the RenderMan(TM) Interface - a protocol that allows modeling programs to describe scenesto high quality rendering programs. In addition to PIXAR, he has founded two companies, Tableau andPeakStream, and served on the technical advisory boards of NVIDIA, Exluna, Neoptica, and VSee.
Professor Hanrahan has received three university teaching awards. He has received two Academy Awardsfor Science and Technology, the Spirit of America Creativity Award, the SIGGRAPH Computer Graph-ics Achievement Award, the SIGGRAPH Stephen A. Coons Award, and the IEEE Visualization CareerAward. He was recently elected to the National Academy of Engineering and the American Academy ofArts and Sciences.
Eurographics/ IEEE-VGTC Symposium on Visualization 2009H.-C. Hege, I. Hotz, and T. Munzner(Guest Editors)
Volume 28 (2009), Number 3
Capstone
Watching Biomolecular Nanomachines at Work:Simulation and Visualization
Helmut Grubmüller
Director Theoretical and Computational Biophysics Dept.Max Planck Institute for Biophysical Chemistry, Göttingen, Germany
AbstractMany proteins are molecular ‘nano machines’; their conformational motion controls and often constitutestheir biological function.
Computer simulations of these molecular dynamics enable one to study such conformational motionsat the atomic level and to undertand the tricks how nature makes these nanomachines work amazinglyefficiently. A number of examples shall demonstrate the approach as well as its limitations.
As the conformational motions are typically extraordinarily complex both in space and time, visualiza-tion techniques are essential in this context. Here, two demands will be highlighted: the demand (a) forinteractive visualization approaches, and (b) for techniques such as principal component analysis or fullcorrelation analysis to extract and visualize essential quantities from complex, high-dimensional datasets.
Short BiographyHelmut Grubmüller received a PhD in Theoretical Physics from the Technical University of Munich, Ger-many, in 1994. Then he was postdoctoral assistant at the Theoretical Biophysics Group University of Mu-nich. He made research visits to Laboratoire de Biophysique Moleculaire et Cellulaire, CENG, Grenoble,France; Theoretical Biophysics Group, Beckman Institute, University of Illinois at Urbana/Champaign,U.S.A.; Institute for Molecular Biology and Biophysics, ETH Zürich, Switzerland.
He headed Theoretical Molecular Biophysics Group at the Max Planck Institute for Biophysical Chem-istry in Göttingen, Germany, from 1998 to 2003. In 2003, he became Associate Professor for Biomolec-ular Sciences at the École Polytechnique Fédérale de Lausanne (EPFL) in Switzerland, and subsequentlyDirector at the Max-Planck-Institute for Biophysical Chemistry, Göttingen and Head of the Theoreticaland Computational Biophysics Department. In 2005 he accepted a Honorary Professorship for Physicsat the University of Göttingen.
Professor Grubmüller is member of the Reviewing Panel of the German Science Foundation (DFG) andExecutive Committee Member of European Biophysical Societies’ Association (EBSA). He joined theEditorial Board of several international scientific journals.