TY - CHAP A1 - Ullmer, Brygg A1 - Hutanu, Andrei A1 - Benger, Werner A1 - Hege, Hans-Christian ED - Staadt, Oliver T1 - Emerging Tangible Interfaces for Facilitating Collaborative Immersive Visualizations T2 - Proc. of NSF Lake Tahoe Workshop on Collaborative Virtual Reality and Visualization (extended abstract) Y1 - 2003 ER - TY - CHAP A1 - Theisel, Holger A1 - Weinkauf, Tino A1 - Hege, Hans-Christian A1 - Seidel, Hans-Peter T1 - Saddle Connectors - An Approach to Visualizing the Topological Skeleton of Complex 3D Vector Fields T2 - Proc. IEEE Visualization 2003 Y1 - 2003 U6 - https://doi.org/10.1109/VISUAL.2003.1250376 SP - 225 EP - 232 CY - Seattle ER - TY - CHAP A1 - Weinkauf, Tino A1 - Hege, Hans-Christian A1 - Noack, Bernd A1 - Schlegel, Michael A1 - Dillmann, Andreas ED - Ajaev, V. ED - Willis, D. T1 - Coherent structures in a transitional flow around a backward-facing step T2 - Physics of Fluids Y1 - 2003 VL - 15 SP - S3 ER - TY - CHAP A1 - Hege, Hans-Christian A1 - Hutanu, Andrei A1 - Kähler, Ralf A1 - Merzky, André A1 - Radke, Thomas A1 - Seidel, Edward A1 - Ullmer, Brygg T1 - Progressive Retrieval and Hierarchical Visualization of Large Remote Data T2 - Proceedings of the 2003 Workshop on Adaptive Grid Middleware Y1 - 2003 SP - 60 EP - 72 ER - TY - JOUR A1 - Hege, Hans-Christian A1 - Merzky, André T1 - GriKSL - Immersive Überwachung und Steuerung von Simulationen auf entfernten Supercomputern JF - DFN-Mitteilungen, Heft 59 Y1 - 2002 SP - 5 EP - 7 ER - TY - CHAP A1 - Gladilin, Evgeny A1 - Zachow, Stefan A1 - Deuflhard, Peter A1 - Hege, Hans-Christian ED - K. Mun, Seong T1 - Adaptive Nonlinear Elastic FEM for Realistic Prediction of Soft Tissue in Craniofacial Surgery Simulations T2 - Proc. SPIE Medical Imaging 2002 Y1 - 2002 U6 - https://doi.org/10.1117/12.466906 VL - 4681 SP - 1 EP - 8 CY - San Diego, USA ER - TY - CHAP A1 - Gladilin, Evgeny A1 - Zachow, Stefan A1 - Deuflhard, Peter A1 - Hege, Hans-Christian ED - Mun, Seong T1 - Shape-based Modeling Approach for the Estimation of Individual Facial Mimics in Craniofacial Surgery Planning T2 - Proc. SPIE Medical Imaging 2002: Visualization, Image-Guided Procedures, and Display Y1 - 2002 VL - 4681 SP - 242 EP - 248 CY - San Diego, USA target ER - TY - CHAP A1 - Hege, Hans-Christian A1 - Schirmacher, Hartmut A1 - Westerhoff, Malte A1 - Lamecker, Hans A1 - Prohaska, Steffen A1 - Zachow, Stefan T1 - From Image Data to Three-Dimensional Models - Case Studies on the Impact of 3D Patient Models T2 - Proceedings of the Japan Korea Computer Graphics Conference 2002 Y1 - 2002 PB - Kanazawa University CY - Kanazawa City, Ishikawa, Japan ER - TY - JOUR A1 - Prohaska, Steffen A1 - Hege, Hans-Christian A1 - Giehl, Michael A1 - Gowin, Wolfgang T1 - Visual Analysis of Trabecular Bone Structure JF - Journal of Gravitational Physiology Y1 - 2002 VL - 9 (1) SP - 171 EP - 172 ER - TY - GEN A1 - Gowin, Wolfgang A1 - Saparin, Peter A1 - Felsenberg, Dieter A1 - Kurths, Jürgen A1 - Zaikin, Alexei A1 - Prohaska, Steffen A1 - Hege, Hans-Christian T1 - Regional Structural Skeletal Discordance Assessed by Measures of Complexity Y1 - 2002 ER - TY - JOUR A1 - Gowin, Wolfgang A1 - Saparin, Peter A1 - Prohaska, Steffen A1 - Hege, Hans-Christian A1 - Felsenberg, Dieter T1 - Femoral Neck Fractures: Reasons for the Most Common Location of Fractures JF - Acta Orthop. Scand. (Suppl. 304) Y1 - 2002 VL - 73 SP - 26 ER - TY - JOUR A1 - Lamecker, Hans A1 - Zachow, Stefan A1 - Wittmers, Antonia A1 - Weber, Britta A1 - Hege, Hans-Christian A1 - Elsholtz, Barbara A1 - Stiller, Michael T1 - Automatic segmentation of mandibles in low-dose CT-data JF - Int. J. Computer Assisted Radiology and Surgery Y1 - 2006 VL - 1(1) SP - 393 EP - 395 ER - TY - JOUR A1 - Lamecker, Hans A1 - Zachow, Stefan A1 - Hege, Hans-Christian A1 - Zöckler, Maja T1 - Surgical treatment of craniosynostosis based on a statistical 3D-shape model JF - Int. J. Computer Assisted Radiology and Surgery Y1 - 2006 U6 - https://doi.org/10.1007/s11548-006-0024-x VL - 1(1) SP - 253 EP - 254 ER - TY - CHAP A1 - Benger, Werner A1 - Hege, Hans-Christian T1 - Analysing curved spacetimes with tensor splats T2 - Proceedings of the Tenth Marcel Grossmann Meeting in Theoretical and Experimental General Relativity, Gravitation and Relativistic Field Theories Y1 - 2006 U6 - https://doi.org/10.1142/9789812704030_0164 VL - 3 SP - 1619 EP - 1624 PB - World Scientific CY - Singapore ER - TY - JOUR A1 - Benger, Werner A1 - Hege, Hans-Christian T1 - Strategies for direct visualization of second-rank tensor fields JF - Visualization and Processing of Tensor Fields Y1 - 2006 U6 - https://doi.org/10.1007/3-540-31272-2_11 SP - 191 EP - 214 PB - Springer Verlag ER - TY - JOUR A1 - Zachow, Stefan A1 - Hege, Hans-Christian A1 - Deuflhard, Peter T1 - Computer assisted planning in cranio-maxillofacial surgery JF - Journal of Computing and Information Technology Y1 - 2006 VL - 14(1) SP - 53 EP - 64 ER - TY - JOUR A1 - Benger, Werner A1 - Bartsch, Hauke A1 - Hege, Hans-Christian A1 - Kitzler, Hagen A1 - Shumilina, Anna A1 - Werner, Annett T1 - Visualizing neuronal structures in the human brain via Diffusion Tensor MRI JF - Int. Journal of Neuroscience Y1 - 2006 VL - 116(4) SP - 461 EP - 514 ER - TY - JOUR A1 - Maye, Alexander A1 - Wenckebach, Thomas A1 - Hege, Hans-Christian T1 - Visualization, reconstruction, and integration of neuronal structures in digital brain atlases JF - Int. Journal of Neuroscience Y1 - 2006 VL - 116(4) SP - 431 EP - 459 ER - TY - JOUR A1 - Zeilhofer, Hans-Florian A1 - Hege, Hans-Christian T1 - Operieren im Medizin-Grid JF - DFN-Mitteilungen, Heft 60 Y1 - 2002 SP - 19 EP - 20 ER - TY - JOUR A1 - Hege, Hans-Christian A1 - Kähler, Ralf A1 - Seidel, Edward A1 - Radke, Thomas T1 - GriKSL zeigt Live-Demos auf der iGrid2002 JF - DFN-Mitteilungen, Heft 60 Y1 - 2002 SP - 21 EP - 22 ER - TY - CHAP A1 - Kähler, Ralf A1 - Cox, Donna A1 - Patterson, Robert A1 - Levy, Stuart A1 - Hege, Hans-Christian A1 - Abel, Tom ED - J. Moorhead, Robert ED - Gross, Markus ED - I. Joy, Kenneth T1 - Rendering The First Star in The Universe - A Case Study T2 - Proceedings of IEEE Visualization 2002 Y1 - 2002 U6 - https://doi.org/10.1109/VISUAL.2002.1183824 SP - 537 EP - 540 PB - IEEE Computer Society Press CY - Boston MA, USA ER - TY - CHAP A1 - Prohaska, Steffen A1 - Hege, Hans-Christian ED - J. Moorhead, Robert ED - Gross, Markus ED - I. Joy, Kenneth T1 - Fast Visualization of Plane-Like Structures in Voxel Data T2 - Proceedings of IEEE Visualization 2002 Y1 - 2002 U6 - https://doi.org/10.1109/VISUAL.2002.1183753 SP - 29 EP - 36 PB - IEEE Computer Society Press CY - Boston MA, USA ER - TY - CHAP A1 - Schmidt-Ehrenberg, Johannes A1 - Baum, Daniel A1 - Hege, Hans-Christian ED - J. Moorhead, Robert ED - Gross, Markus ED - I. Joy, Kenneth T1 - Visualizing Dynamic Molecular Conformations T2 - Proceedings of IEEE Visualization 2002 Y1 - 2002 U6 - https://doi.org/10.1109/VISUAL.2002.1183780 SP - 235 EP - 242 PB - IEEE Computer Society Press CY - Boston MA, USA ER - TY - CHAP A1 - Coconu, Liviu A1 - Hege, Hans-Christian ED - Gibson, Simon ED - Debevec, Paul T1 - Hardware-Accelerated Point-Based Rendering of Complex Scenes T2 - Proceedings of the 13th Eurographics Workshop on Rendering Techniques Y1 - 2002 SP - 43 EP - 52 CY - Pisa, Italy ER - TY - CHAP A1 - Benger, Werner A1 - Hege, Hans-Christian A1 - Merzky, André A1 - Radke, Thomas A1 - Seidel, Edward T1 - Efficient Distributed File I/O for Visualization in Grid Environments T2 - Simulation and Visualization on the Grid Y1 - 2000 VL - 13 SP - 1 EP - 6 PB - Springer Verlag ER - TY - CHAP A1 - Zeilhofer, Hans-Florian A1 - Sader, Robert A1 - Apostolescu, Victor A1 - Hoffmann, Karl-Heinz A1 - Göbel, Martin A1 - Hege, Hans-Christian T1 - Die Bedeutung breitbandiger und leistungsfähiger Kommunikationsinfrastrukturen für die kraniomaxillofaziale Chirurgie - Möglichkeiten der netzbasierten Bildverarbeitung T2 - Bildverarbeitung für die Medizin 2000 (Abstract) Y1 - 2000 CY - München ER - TY - CHAP A1 - Zachow, Stefan A1 - Gladilin, Evgeny A1 - Hege, Hans-Christian A1 - Deuflhard, Peter T1 - Finite-Element Simulation of Soft Tissue Deformation T2 - Computer Assisted Radiology and Surgey (CARS) Y1 - 2000 SP - 23 EP - 28 PB - Elsevier Science B.V. ER - TY - JOUR A1 - Zöckler, Malte A1 - Stalling, Detlev A1 - Hege, Hans-Christian T1 - Fast and Intuitive Generation of Geometric Shape Transitions JF - The Visual Computer Y1 - 2000 U6 - https://doi.org/10.1007/PL00013396 VL - 16(5) SP - 241 EP - 253 ER - TY - CHAP A1 - Benger, Werner A1 - Hege, Hans-Christian A1 - Heusler, Stefan T1 - Visions of Numerical Relativity T2 - Proceedings of the 3d International Conference on the Interaction of Art and Fluid Mechanics (SCART2000) Y1 - 2000 SP - 239 EP - 246 PB - Kluwer Academic Publishers CY - ETH Zürich Zwitzerland ER - TY - CHAP A1 - Deuflhard, Peter A1 - Hege, Hans-Christian A1 - Seebaß, Martin T1 - Progress Towards a Combined MRI/Hyperthermia System T2 - Proceedings Second International Congress HIGH CARE 2000 Y1 - 2000 CY - Bochum ER - TY - JOUR A1 - Hege, Hans-Christian A1 - Benger, Werner A1 - Merzky, André A1 - Kasper, Friedbert A1 - Radke, Thomas A1 - Seidel, Edward T1 - Schwarze Löcher in Sicht - Immersive Überwachung und Steuerung von Remote-Simulationen JF - DFN-Mitteilungen Y1 - 2000 VL - 52 IS - 2 SP - 4 EP - 6 ER - TY - JOUR A1 - Allen, Gabrielle A1 - Goodale, Tom A1 - Lanfermann, Gerd A1 - Seidel, Edward A1 - Benger, Werner A1 - Hege, Hans-Christian A1 - Merzky, André A1 - Masso, Joan A1 - Shalf, John T1 - Solving Einstein’s Equations on Supercomputers JF - IEEE Computer Y1 - 1999 U6 - https://doi.org/10.1109/2.809251 SP - 52 EP - 59 ER - TY - CHAP A1 - Wegner, Susan A1 - Stalling, Detlev A1 - Hege, Hans-Christian A1 - Oswald, H. A1 - Fleck, E. ED - Arnolds, B. ED - Müller, H. ED - Saupe, D. ED - Tolxdorff, Thomas T1 - Die 3D-Wasserscheidentransformation auf Graphenebene - eine Anwendung für die Hyperthermieplannung T2 - Digitale Bildverarbeitung in der Medizin, Tagungsband zum 5. Freiburger Workshop Y1 - 1997 SP - 31 EP - 36 CY - Freiburg ER - TY - CHAP A1 - Seebaß, Martin A1 - Stalling, Detlev A1 - Zöckler, Malte A1 - Hege, Hans-Christian A1 - Wust, Peter A1 - Felix, Roland A1 - Deuflhard, Peter T1 - Surface Mesh Generation for Numerical Simulations of Hyperthermia Treatments T2 - Proceedings of the 16th Annual Meeting of the European Society for Hyperthermic Oncology (ESHO-97) Y1 - 1997 SP - 146 ER - TY - CHAP A1 - Deuflhard, Peter A1 - Seebaß, Martin A1 - Stalling, Detlev A1 - Beck, Rudolf A1 - Hege, Hans-Christian ED - Sydow, Achim T1 - Hyperthermia Treatment Planning in Clinical Therapy T2 - Computational Physics, Chemistry and Biology (Proceedings of the 15th IMACS World Congress 1997 on Scientific Computation 3, Modelling and Applied Mathematics) Y1 - 1997 SP - 9 EP - 17 PB - Wissenschaft und Technik Verlag ER - TY - CHAP A1 - Nadobny, Jacek A1 - Wust, Peter A1 - Stalling, Detlev A1 - Hege, Hans-Christian A1 - Deuflhard, Peter A1 - Felix, Roland T1 - A Quantitative Comparison Between VSIE and the FDTD Method Using Electrically Equivalent Patient and Antenna Models T2 - Proceedings of 16th Annual Meeting of the European Society for Hyperthermic Oncology ESHO-97 Y1 - 1997 SP - 145 CY - Berlin, Germany ER - TY - CHAP A1 - Wust, Peter A1 - Nadobny, Jacek A1 - Gellermann, Johanna A1 - Seebaß, Martin A1 - Stalling, Detlev A1 - Hege, Hans-Christian A1 - Deuflhard, Peter A1 - Felix, Roland T1 - Patient Models and Algorithms for Hyperthermia Planning T2 - Proceedings of the 16th Annual Meeting of the European Society for Hyperthermic Oncology ESHO-97 Y1 - 1997 ER - TY - CHAP A1 - Zöckler, Malte A1 - Stalling, Detlev A1 - Hege, Hans-Christian T1 - Parallel Line Integral Convolution T2 - Proc. First Eurographics Workshop on Parallel Graphics and Visualization Y1 - 1996 U6 - https://doi.org/10.1016/S0167-8191(97)00039-2 SP - 111 EP - 128 CY - Bristol, U.K. ER - TY - CHAP A1 - Battke, Henrik A1 - Stalling, Detlev A1 - Hege, Hans-Christian ED - Hege, Hans-Christian ED - Polthier, Konrad T1 - Fast Line Integral Convolution for Arbitrary Surfaces in 3D T2 - Visualization and Mathematics 1997 Y1 - 1996 SP - 181 EP - 195 PB - Springer, Heidelberg ER - TY - CHAP A1 - Zöckler, Malte A1 - Stalling, Detlev A1 - Hege, Hans-Christian T1 - Interactive Visualization of 3D-Vector Fields Using Illuminated Streamlines T2 - Proc. IEEE Visualization 1996 Y1 - 1996 U6 - https://doi.org/10.1109/VISUAL.1996.567777 SP - 107 EP - 113 CY - San Fransisco ER - TY - CHAP A1 - Beck, Rudolf A1 - Deuflhard, Peter A1 - Hege, Hans-Christian A1 - Seebaß, Martin A1 - Stalling, Detlev ED - Hege, Hans-Christian ED - Polthier, Konrad T1 - Numerical Algorithms and Visualization in Medical Treatment Planning T2 - Visualization and Mathematics 1997 Y1 - 1996 SP - 303 EP - 328 PB - Springer, Heidelberg ER - TY - JOUR A1 - Hege, Hans-Christian A1 - Höllerer, Tobias A1 - Stalling, Detlev T1 - Volume Rendering: Mathematical Models and Algorithmic Aspects JF - Partielle Differentialgleichungen, Numerik und Anwendungen, Konferenzen des Forschungszentrum Jülich GmbH Y1 - 1996 SP - 227 EP - 255 PB - W. Nagel ER - TY - CHAP A1 - Beck, Rudolf A1 - Hege, Hans-Christian A1 - Seebaß, Martin A1 - Wust, Peter A1 - Deuflhard, Peter A1 - Felix, Roland T1 - Adaptive Finite Element Codes for Numerical Calculations in Hyperthermia Treatment Planning T2 - Proceedings of the 17th Congress on Hyperthermic Oncology Y1 - 1996 VL - 2 SP - 515 EP - 517 CY - Rome, Italy ER - TY - CHAP A1 - Stalling, Detlev A1 - Hege, Hans-Christian T1 - Intelligent Scissors for Medical Image Segmentation T2 - Tagungsband zum 4. Freiburger Workshop Digitale Bildverarbeitung in der Medizin Y1 - 1996 SP - 32 EP - 36 CY - Freiburg ER - TY - CHAP A1 - Stalling, Detlev A1 - Seebaß, Martin A1 - Hege, Hans-Christian A1 - Wust, Peter A1 - Deuflhard, Peter A1 - Felix, Roland T1 - HyperPlan - an Integrated System for Treatment Planning in Regional Hyperthermia T2 - Proceedings of the 17th Congress on Hyperthermic Oncology Y1 - 1996 VL - 2 SP - 552 EP - 554 CY - Rome, Italy ER - TY - JOUR A1 - Hege, Hans-Christian A1 - Stüben, Hinnerk T1 - Daten "sehen" - Wissenschaftliche Visualisierung im RTB Berlin JF - DFN Mitteilungen Y1 - 1995 VL - 38 SP - 10 EP - 12target ER - TY - JOUR A1 - Akemi, K. A1 - deForcrand, Ph. A1 - Fujisaki, M. A1 - Hashimoto, T. A1 - Hege, Hans-Christian A1 - Hioki, S. A1 - Miyamura, O. A1 - Nakamura, A. A1 - Okuda, M. A1 - Stamatescu, I. O. A1 - Tago, Yoshio A1 - Takaishi, T. T1 - Quantum Chromodynamics Simulations on a Non-Dedicated Highly Parallel Computer JF - Comp. Phys. Comm Y1 - 1995 U6 - https://doi.org/10.1016/0010-4655(95)00082-Q VL - 90 SP - 201 EP - 214 ER - TY - CHAP A1 - Deuflhard, Peter A1 - Hege, Hans-Christian T1 - Scientific Computing in der Theoretischen Physik - Collected Abstracts T2 - Tagung organisiert von der DMV-Fachgruppe Scientific Computing in Kooperation mit dem GAMM Fachausschuss Scientific Computing Y1 - 1994 CY - Berlin ER - TY - CHAP A1 - Grammel, Martin A1 - Back, Godmar A1 - Wunderling, Roland A1 - Hege, Hans-Christian T1 - Ein paralleles C++/C-Programmiermodell für ein objektorientiertes B&C-Framework T2 - GI/ITG-Workshop, Sept.1994, Mitteilungen der Fachgruppe PARS der Gesellschaft für Informatik (GI) Y1 - 1994 VL - 13 SP - 50 EP - 59 CY - Potsdam ER - TY - CHAP A1 - Wunderling, Roland A1 - Grammel, Martin A1 - Hege, Hans-Christian T1 - Parallele LU-Zerlegung großer, unsymmetrischer, dünn besetzter Matrizen bei hohen Kommunikationslatenzen T2 - GI/ITG-Workshop, Sept.1994, Mitteilungen der Fachgruppe PARS der Gesellschaft für Informatik (GI) Y1 - 1994 VL - 13 SP - 191 EP - 200 CY - Potsdam ER - TY - JOUR A1 - Hege, Hans-Christian T1 - Scaling study of pure SU(3) theory - the QCD-TARO collaboration JF - Nucl. Phys. B Proc. Suppl. Y1 - 1994 U6 - https://doi.org/10.1016/0920-5632(94)90358-1 VL - 34 SP - 246 EP - 252 ER - TY - JOUR A1 - Hashimoto, T. A1 - Hege, Hans-Christian T1 - QCD on the Massively Parallel Computer AP 1000 JF - Int. J. Mod. Phys. Y1 - 1993 U6 - https://doi.org/10.1142/S0129183193000975 VL - 4 IS - 6 SP - 1233 EP - 1253 ER - TY - JOUR A1 - Hashimoto, T. A1 - Hege, Hans-Christian T1 - Autocorrelation in Updating Pure SU(3) Lattice Gauge Theory by the Use of Overrelaxed Algorithms JF - Nucl. Phys. B Proc. Suppl. Y1 - 1993 U6 - https://doi.org/10.1016/0920-5632(93)90202-H VL - 30 SP - 253 EP - 256 ER - TY - JOUR A1 - Hashimoto, T. A1 - Hege, Hans-Christian T1 - Study of Spatial Size Effects in Quenched Wilson Hadron Spectroscopy at beta = 6.3 JF - Nucl. Phys. B Proc. Suppl. Y1 - 1993 U6 - https://doi.org/10.1016/0920-5632(93)90230-4 VL - 30 SP - 373 EP - 376 ER - TY - JOUR A1 - Wust, Peter A1 - Gellermann, Johanna A1 - Beier, Jürgen A1 - Wegner, Susan A1 - Tilly, Wolfgang A1 - Tröger, Jens A1 - Stalling, Detlev A1 - Hege, Hans-Christian A1 - Deuflhard, Peter A1 - Felix, Roland T1 - Evaluation of Segmentation Algorithms for Generation of Patient Models in Radiofrequency Hyperthermia JF - Phys. Med. Biol. Y1 - 1998 U6 - https://doi.org/10.1088/0031-9155/43/11/009 VL - 43 (11) SP - 3295 EP - 3307 ER - TY - CHAP A1 - Hege, Hans-Christian A1 - Stalling, Detlev T1 - LIC: Acceleration, Animation, Zoom T2 - Texture Synthesis with Line Integral Convolution, Siggraph 97, 24. Int. Conf. Computer Graphics and Interactive Techniques Y1 - 1997 SP - 17 EP - 49 CY - Los Angeles ER - TY - CHAP A1 - Stalling, Detlev A1 - Hege, Hans-Christian T1 - LIC on Surfaces T2 - Texture Synthesis with Line Integral Convolution, Siggraph 97, 24. Int. Conf. Computer Graphics and Interactive Techniques Y1 - 1997 SP - 51 EP - 64 CY - Los Angeles ER - TY - JOUR A1 - Stalling, Detlev A1 - Zöckler, Malte A1 - Hege, Hans-Christian T1 - Fast Display of Illuminated Field Lines JF - IEEE Transactions on Visualization and Computer Graphics Y1 - 1997 U6 - https://doi.org/10.1109/2945.597795 VL - 3 IS - 2 SP - 118 EP - 128 ER - TY - CHAP A1 - Hege, Hans-Christian A1 - Stalling, Detlev ED - Hege, Hans-Christian ED - Polthier, Konrad T1 - Fast LIC with Piecewise Polynomial Filter Kernels T2 - Mathematical Visualization - Algorithms and Applications Y1 - 1998 SP - 295 EP - 314 PB - Springer-Verlag Berlin ER - TY - CHAP A1 - Stalling, Detlev A1 - Zöckler, Malte A1 - Hege, Hans-Christian T1 - Segmentation of 3D Medical Images with Subvoxel Accuracy T2 - Proc. CARS ’98 Computer Assisted Radiology and Surgery Y1 - 1998 SP - 137 EP - 142 CY - Tokyo ER - TY - JOUR A1 - Wust, Peter A1 - Nadobny, Jacek A1 - Seebaß, Martin A1 - Stalling, Detlev A1 - Gellermann, Johanna A1 - Hege, Hans-Christian A1 - Deuflhard, Peter T1 - Influence of Patient Models and Numerical Methods on Predicted Power Deposition Patterns JF - Int. Journal Hyperthermia Y1 - 1999 VL - 15 IS - 6 SP - 519 EP - 540 ER - TY - CHAP A1 - Seebaß, Martin A1 - Stalling, Detlev A1 - Hege, Hans-Christian A1 - Wust, Peter A1 - Felix, Roland A1 - Deuflhard, Peter T1 - New Features of HyperPlan, a Hyperthermia Planning System T2 - Proc. Hyperthermia in Clincal Oncology Y1 - 1998 SP - 16 CY - Venice ER - TY - CHAP A1 - Schirmacher, Hartmut A1 - Zöckler, Malte A1 - Stalling, Detlev A1 - Hege, Hans-Christian ED - Girod, Bernd ED - Niemann, Heinrich ED - Seidel, Hans T1 - Boundary Surface Shrinking - a Continuous Approach to 3D Center Line Extraction T2 - Proc. of IMDSP’98, held in Alpbach Y1 - 1998 SP - 25 EP - 28 CY - Austria ER - TY - JOUR A1 - Hege, Hans-Christian T1 - Problems and Solutions: Product of Chebyshev Polynomials JF - Orthogonal Polynomials and Special Functions Y1 - 1996 VL - 6 (2) SP - 12 ER - TY - CHAP A1 - Höllerer, Tobias A1 - Tönnies, Klaus A1 - Hege, Hans-Christian A1 - Stalling, Detlev T1 - Volume Rendering on Irregular Grids (Abstract) T2 - Int. Workshop on Mathematics and Visualization Y1 - 1995 CY - Berlin, Germany ER - TY - JOUR A1 - Höllerer, Tobias A1 - Tönnies, Klaus A1 - Hege, Hans-Christian A1 - Stalling, Detlev T1 - Der Einfluß der Datenapproximation bei Volume Rendering durch ein Emissions/Absorptions-Modell JF - Visualisierung - Dynamik und Komplexität Y1 - 1995 PB - CEVIS Universität Bremen und Fachgruppe 4.2.1 der Gesellschaft für Informatik CY - Bremen, Germany ER - TY - CHAP A1 - Stalling, Detlev A1 - Hege, Hans-Christian T1 - Fast and Resolution-Independent Line Integral Convolution T2 - Proceedings of SIGGRAPH ’95 Y1 - 1995 U6 - https://doi.org/10.1145/218380.218448 SP - 249 EP - 256 PB - Computer Graphics Annual Conference Series, ACM SIGGRAPH CY - Los Angeles, California ER - TY - CHAP A1 - Stalling, Detlev A1 - Hege, Hans-Christian T1 - Design and Implementation of a Hyperthermia Planning System T2 - Tagungsband zum 4. Freiburger Workshop Digitale Bildverarbeitung in der Medizin Y1 - 1995 CY - Freiburg/Breisgau ER - TY - CHAP A1 - Stalling, Detlev A1 - Hege, Hans-Christian A1 - Höllerer, Tobias T1 - Visualization and 3D-Interaction for Hyperthermia Treatment Planning T2 - Proc. CAR 95 Computer Assisted Radiology, 9th International Symposium and Exhibition Y1 - 1995 SP - 1216 EP - 1222 CY - Berlin ER - TY - JOUR A1 - Hashimoto, T. A1 - Hege, Hans-Christian T1 - Monte Carlo Renormalization Study at Large beta in the Confinement Region JF - Nuclear Phys. B. Proc. Suppl. Y1 - 1993 U6 - https://doi.org/10.1016/0920-5632(93)90263-6 VL - 30 SP - 517 EP - 520 ER - TY - GEN A1 - Wunderling, Roland A1 - Hege, Hans-Christian T1 - AGIL - the Adaptable Graphical Interface Layer, Programmierer-Handbuch Y1 - 1992 SP - 34pp. PB - Interner Report, Konrad-Zuse-Zentrum für Informationstechnik Berlin (ZIB), Germany ER - TY - JOUR A1 - Hege, Hans-Christian A1 - Knecht, Renate T1 - Conference Report: Parallel Computing 91 JF - Parallel Computing Y1 - 1992 VL - 18 IS - 4 SP - 473 EP - 476 ER - TY - JOUR A1 - Hashimoto, T. A1 - Hege, Hans-Christian T1 - Hadron Spectroscopy on a 32^3 * 48 Lattice JF - Nucl. Phys. B Proc. Suppl. 26 Y1 - 1992 U6 - https://doi.org/10.1016/0920-5632(92)90257-S SP - 293 EP - 295 ER - TY - JOUR A1 - Akemi, K. A1 - Forcrand, Ph. de A1 - Fujisaki, M. A1 - Hashimoto, T. A1 - Hege, Hans-Christian A1 - Hioki, S. A1 - Makino, J. A1 - Miyamura, O. A1 - Nakamura, A. A1 - Okuda, M. A1 - Stamatescu, I. O. A1 - Tago, Yoshio A1 - Takaishi, T. T1 - SU(3) Renormalization Group Study on Parallel Computer AP 1000 JF - Nucl. Phys. B Proc. Suppl. 26 Y1 - 1992 U6 - https://doi.org/10.1016/0920-5632(92)90293-2 SP - 420 EP - 422 ER - TY - JOUR A1 - Akemi, K. A1 - Forcrand, Ph. de A1 - Fujisaki, M. A1 - Hashimoto, T. A1 - Hege, Hans-Christian A1 - Hioki, S. A1 - Makino, J. A1 - Miyamura, O. A1 - Nakamura, A. A1 - Okuda, M. A1 - Stamatescu, I. O. A1 - Tago, Yoshio A1 - Takaishi, T. T1 - QCD on the Highly Parallel Computer AP 1000 JF - Nucl. Phys. B Proc. Suppl. 26 Y1 - 1992 U6 - https://doi.org/10.1016/0920-5632(92)90358-Y SP - 644 EP - 646 ER - TY - CHAP A1 - Hege, Hans-Christian A1 - Stüben, Hinnerk T1 - Vectorization and Parallelization of Irregular Problems via Graph Coloring T2 - Proc. of the ACM Int. Conf. on Supercomputing Y1 - 1991 U6 - https://doi.org/10.1145/109025.109042 SP - 47 EP - 56 CY - Cologne ER - TY - JOUR A1 - Dercksen, Vincent J. A1 - Hege, Hans-Christian A1 - Oberlaender, Marcel T1 - The Filament Editor: An Interactive Software Environment for Visualization, Proof-Editing and Analysis of 3D Neuron Morphology JF - NeuroInformatics Y1 - 2014 U6 - https://doi.org/10.1007/s12021-013-9213-2 VL - 12 IS - 2 SP - 325 EP - 339 PB - Springer US ER - TY - JOUR A1 - Lindow, Norbert A1 - Baum, Daniel A1 - Leborgne, Morgan A1 - Hege, Hans-Christian T1 - Interactive Visualization of RNA and DNA Structures JF - IEEE Transactions on Visualization and Computer Graphics N2 - The analysis and visualization of nucleic acids (RNA and DNA) is playing an increasingly important role due to their fundamental importance for all forms of life and the growing number of known 3D structures of such molecules. The great complexity of these structures, in particular, those of RNA, demands interactive visualization to get deeper insights into the relationship between the 2D secondary structure motifs and their 3D tertiary structures. Over the last decades, a lot of research in molecular visualization has focused on the visual exploration of protein structures while nucleic acids have only been marginally addressed. In contrast to proteins, which are composed of amino acids, the ingredients of nucleic acids are nucleotides. They form structuring patterns that differ from those of proteins and, hence, also require different visualization and exploration techniques. In order to support interactive exploration of nucleic acids, the computation of secondary structure motifs as well as their visualization in 2D and 3D must be fast. Therefore, in this paper, we focus on the performance of both the computation and visualization of nucleic acid structure. We present a ray casting-based visualization of RNA and DNA secondary and tertiary structures, which enables for the first time real-time visualization of even large molecular dynamics trajectories. Furthermore, we provide a detailed description of all important aspects to visualize nucleic acid secondary and tertiary structures. With this, we close an important gap in molecular visualization. Y1 - 2019 U6 - https://doi.org/10.1109/TVCG.2018.2864507 VL - 25 IS - 1 SP - 967 EP - 976 ER - TY - JOUR A1 - Agudo Jácome, Leonardo A1 - Hege, Hans-Christian A1 - Paetsch, Olaf A1 - Pöthkow, Kai T1 - Three-dimensional reconstruction and quantification of dislocation substructures from transmission electron microscopy stereo pairs JF - Ultramicroscopy N2 - A great amount of material properties is strongly influenced by dislocations, the carriers of plastic deformation. It is therefore paramount to have appropriate tools to quantify dislocation substructures with regard to their features, e.g., dislocation density, Burgers vectors or line direction. While the transmission electron microscope (TEM) has been the most widely-used equipment implemented to investigate dislocations, it usually is limited to the two-dimensional (2D) observation of three-dimensional (3D) structures. We reconstruct, visualize and quantify 3D dislocation substructure models from only two TEM images (stereo pairs) and assess the results. The reconstruction is based on the manual interactive tracing of filiform objects on both images of the stereo pair. The reconstruction and quantification method are demonstrated on dark field (DF) scanning (S)TEM micrographs of dislocation substructures imaged under diffraction contrast conditions. For this purpose, thick regions (>300 nm) of TEM foils are analyzed, which are extracted from a Ni-base superalloy single crystal after high temperature creep deformation. It is shown how the method allows 3D quantification from stereo pairs in a wide range of tilt conditions, achieving line length and orientation uncertainties of 3% and 7°, respectively. Parameters that affect the quality of such reconstructions are discussed. Y1 - 2018 U6 - https://doi.org/10.1016/j.ultramic.2018.08.015 VL - 195 SP - 157 EP - 170 ER - TY - CHAP A1 - Coconu, Liviu A1 - Ullmer, Brygg A1 - Paar, Philip A1 - Liu, Jing A1 - Konkel, Miriam A1 - Hege, Hans-Christian T1 - A smartphone-based tangible interaction approach for landscape visualization. T2 - PerDis ’18 Proceedings of the 7th ACM International Symposium on Pervasive Displays, Munich, Germany, June 6-8, 2018 N2 - The use of tangible interfaces for navigation of landscape scenery – for example, lost places re-created in 3D – has been pursued and articulated as a promising, impactful application of interactive visualization. In this demonstration, we present a modern, low-cost implementation of a previously-realized multimodal gallery installation. Our demonstration centers upon the versatile usage of a smartphone for sensing, navigating, and (optionally) displaying element on a physical surface in tandem with a larger, more immersive display. Y1 - 2018 U6 - https://doi.org/10.1145/3205873.3210707 SP - no. 23 PB - ACM CY - New York, NY, USA ER - TY - CHAP A1 - Ullmer, Brygg A1 - Paar, Philip A1 - Coconu, Liviu A1 - Liu, Jing A1 - Konkel, Miriam A1 - Hege, Hans-Christian T1 - An 1834 mediterranean garden in Berlin – engaged from 2004, 2018, 2032, and 2202 T2 - PerDis ’18 – 7th ACM International Symposium on Pervasive Displays, Munich, Germany, June 6-8, 2018 N2 - In 2004, a team of researchers realized a semi-immersive interactive gallery installation, visualizing an 1834 Mediterranean garden, introduced as “italienisches Kunststück” (Italian legerdemain) by Peter Joseph Lenné. The park was originally realized on the grounds of Schloss Sanssouci in Potsdam, Germany. The installation centered on highly detailed renderings of hundreds of plants projected upon a panoramic display. Interactivity was expressed with a tangible interface which (while presently dated) we believe remains without near-precedent then or since. We present the installation (experienced by roughly 20,000 visitors), focusing on the interaction aspects. We introduce new book and table/door-format mockups. Drawing upon a heuristic of the scientist-philosopher Freeman Dyson, we consider grounded future prospect variations in the contexts of 2018, 2032, and 2202. We see this exercise as prospectively generalizing to a variety of similar and widely diverse application domains. Y1 - 2018 U6 - https://doi.org/10.1145/3205873.3205894 SP - no. 12 PB - ACM CY - New York, NY, USA ER - TY - JOUR A1 - Baum, Daniel A1 - Lindow, Norbert A1 - Hege, Hans-Christian A1 - Lepper, Verena A1 - Siopi, Tzulia A1 - Kutz, Frank A1 - Mahlow, Kristin A1 - Mahnke, Heinz-Eberhard T1 - Revealing hidden text in rolled and folded papyri JF - Applied Physics A N2 - Ancient Egyptian papyri are often folded, rolled up or kept as small packages, sometimes even sealed. Physically unrolling or unfolding these packages might severely damage them. We demonstrate a way to get access to the hidden script without physical unfolding by employing computed tomography and mathematical algorithms for virtual unrolling and unfolding. Our algorithmic approaches are combined with manual interaction. This provides the necessary flexibility to enable the unfolding of even complicated and partly damaged papyrus packages. In addition, it allows us to cope with challenges posed by the structure of ancient papyrus, which is rather irregular, compared to other writing substrates like metallic foils or parchment. Unfolding of packages is done in two stages. In the first stage, we virtually invert the physical folding process step by step until the partially unfolded package is topologically equivalent to a scroll or a papyrus sheet folded only along one fold line. To minimize distortions at this stage, we apply the method of moving least squares. In the second stage, the papyrus is simply flattened, which requires the definition of a medial surface. We have applied our software framework to several papyri. In this work, we present the results of applying our approaches to mockup papyri that were either rolled or folded along perpendicular fold lines. In the case of the folded papyrus, our approach represents the first attempt to address the unfolding of such complicated folds. Y1 - 2017 U6 - https://doi.org/10.1007/s00339-017-0808-6 VL - 123 IS - 3 SP - 171 ER - TY - CHAP A1 - Ritter, Zully A1 - Prohaska, Steffen A1 - Brand, R. A1 - Friedmann, A. A1 - Hege, Hans-Christian A1 - Goebbels, Jürgen A1 - Felsenberg, Dieter T1 - Osteocytes number and volume in osteoporotic and in healthy bone biopsies analysed using Synchrotron CT: a pilot study T2 - Proc. ISB 2011 Y1 - 2011 ER - TY - JOUR A1 - Kainmüller, Dagmar A1 - Lamecker, Hans A1 - Heller, Markus O. A1 - Weber, Britta A1 - Hege, Hans-Christian A1 - Zachow, Stefan T1 - Omnidirectional Displacements for Deformable Surfaces JF - Medical Image Analysis Y1 - 2013 U6 - https://doi.org/10.1016/j.media.2012.11.006 VL - 17 IS - 4 SP - 429 EP - 441 PB - Elsevier ER - TY - CHAP A1 - Kasten, Jens A1 - Zoufahl, Andre A1 - Hege, Hans-Christian A1 - Hotz, Ingrid T1 - Analysis of Vortex Merge Graphs T2 - VMV 2012: Vision, Modeling and Visualization Y1 - 2012 U6 - https://doi.org/10.2312/PE/VMV/VMV12/111-118 SP - 111 EP - 118 PB - Eurographics Association ER - TY - CHAP A1 - Kasten, Jens A1 - Hotz, Ingrid A1 - Noack, Bernd A1 - Hege, Hans-Christian T1 - Vortex Merge Graphs in Two-dimensional Unsteady Flow Fields T2 - EuroVis – Short Papers Y1 - 2012 UR - http://diglib.eg.org/EG/DL/PE/EuroVisShort/EuroVisShort2012/001-005.pdf U6 - https://doi.org/10.2312/PE/EuroVisShort/EuroVisShort2012/001-005 SP - 1 EP - 5 PB - Eurographics Association CY - Vienna, Austria ER - TY - JOUR A1 - Krone, Michael A1 - Kozlíková, Barbora A1 - Lindow, Norbert A1 - Baaden, Marc A1 - Baum, Daniel A1 - Parulek, Julius A1 - Hege, Hans-Christian A1 - Viola, Ivan T1 - Visual Analysis of Biomolecular Cavities: State of the Art JF - Computer Graphics Forum N2 - In this report we review and structure the branch of molecular visualization that is concerned with the visual analysis of cavities in macromolecular protein structures. First the necessary background, the domain terminology, and the goals of analytical reasoning are introduced. Based on a comprehensive collection of relevant research works, we present a novel classification for cavity detection approaches and structure them into four distinct classes: grid-based, Voronoi-based, surface-based, and probe-based methods. The subclasses are then formed by their combinations. We match these approaches with corresponding visualization technologies starting with direct 3D visualization, followed with non-spatial visualization techniques that for example abstract the interactions between structures into a relational graph, straighten the cavity of interest to see its profile in one view, or aggregate the time sequence into a single contour plot. We also discuss the current state of methods for the visual analysis of cavities in dynamic data such as molecular dynamics simulations. Finally, we give an overview of the most common tools that are actively developed and used in the structural biology and biochemistry research. Our report is concluded by an outlook on future challenges in the field. Y1 - 2016 U6 - https://doi.org/10.1111/cgf.12928 SN - 1467-8659 VL - 35 IS - 3 SP - 527 EP - 551 ER - TY - JOUR A1 - Kramer, Tobias A1 - Noack, Matthias A1 - Baum, Daniel A1 - Hege, Hans-Christian A1 - Heller, Eric J. T1 - Homogeneous dust emission and jet structure near active cometary nuclei: the case of 67P/Churyumov-Gerasimenko N2 - We compute trajectories of dust grains starting from a homogeneous surface activity-profile on a irregularly shaped cometary nucleus. Despite the initially homogeneous dust distribution a collimation in jet-like structures becomes visible. The fine structure is caused by concave topographical features with similar bundles of normal vectors. The model incorporates accurately determined gravitational forces, rotation of the nucleus, and gas-dust interaction. Jet-like dust structures are obtained for a wide range of gas-dust interactions. For the comet 67P/Churyumov-Gerasimenko, we derive the global dust distribution around the nucleus and find several areas of agreement between the homogeneous dust emission model and the Rosetta observation of dust jets, including velocity-dependent bending of trajectories. Y1 - 2015 ER - TY - CHAP A1 - Agudo Jácome, Leonardo A1 - Hege, Hans-Christian A1 - Paetsch, Olaf A1 - Pöthkow, Kai T1 - 3D Reconstruction, Visualization and Quantification of Dislocations from Transmission Electron Microscopy Stereo-Pairs T2 - Microscopy and Microanalysis 2016, July 24-28 Columbus, Ohio Y1 - 2016 UR - https://www.microscopy.org/MandM/2016/program/abstracts/PDP-57.pdf ER - TY - CHAP A1 - Lindow, Norbert A1 - Baum, Daniel A1 - Hege, Hans-Christian T1 - Atomic Accessibility Radii for Molecular Dynamics Analysis T2 - Workshop on Molecular Graphics and Visual Analysis of Molecular Data N2 - In molecular structure analysis and visualization, the molecule’s atoms are often modeled as hard spheres parametrized by their positions and radii. While the atom positions result from experiments or molecular simulations, for the radii typically values are taken from literature. Most often, van der Waals (vdW) radii are used, for which diverse values exist. As a consequence, different visualization and analysis tools use different atomic radii, and the analyses are less objective than often believed. Furthermore, for the geometric accessibility analysis of molecular structures, vdW radii are not well suited. The reason is that during the molecular dynamics simulation, depending on the force field and the kinetic energy in the system, non-bonded atoms can come so close to each other that their vdW spheres intersect. In this paper, we introduce a new kind of atomic radius, called atomic accessibility radius’, that better characterizes the accessibility of an atom in a given molecular trajectory. The new radii reflect the movement possibilities of atoms in the simulated physical system. They are computed by solving a linear program that maximizes the radii of the atoms under the constraint that non-bonded spheres do not intersect in the considered molecular trajectory. Using this data-driven approach, the actual accessibility of atoms can be visualized more precisely. Y1 - 2018 SN - 978-3-03868-061-1 U6 - https://doi.org/10.2312/molva.20181101 PB - The Eurographics Association ER - TY - JOUR A1 - Nava-Yazdani, Esfandiar A1 - Hege, Hans-Christian A1 - Sullivan, T. J. A1 - von Tycowicz, Christoph T1 - Geodesic Analysis in Kendall's Shape Space with Epidemiological Applications JF - Journal of Mathematical Imaging and Vision N2 - We analytically determine Jacobi fields and parallel transports and compute geodesic regression in Kendall’s shape space. Using the derived expressions, we can fully leverage the geometry via Riemannian optimization and thereby reduce the computational expense by several orders of magnitude over common, nonlinear constrained approaches. The methodology is demonstrated by performing a longitudinal statistical analysis of epidemiological shape data. As an example application we have chosen 3D shapes of knee bones, reconstructed from image data of the Osteoarthritis Initiative (OAI). Comparing subject groups with incident and developing osteoarthritis versus normal controls, we find clear differences in the temporal development of femur shapes. This paves the way for early prediction of incident knee osteoarthritis, using geometry data alone. Y1 - 2020 U6 - https://doi.org/10.1007/s10851-020-00945-w VL - 62 IS - 4 SP - 549 EP - 559 ER - TY - CHAP A1 - Nava-Yazdani, Esfandiar A1 - Hege, Hans-Christian A1 - von Tycowicz, Christoph T1 - A Geodesic Mixed Effects Model in Kendall's Shape Space T2 - Proc. 7th MICCAI workshop on Mathematical Foundations of Computational Anatomy (MFCA) N2 - In many applications, geodesic hierarchical models are adequate for the study of temporal observations. We employ such a model derived for manifold-valued data to Kendall's shape space. In particular, instead of the Sasaki metric, we adapt a functional-based metric, which increases the computational efficiency and does not require the implementation of the curvature tensor. We propose the corresponding variational time discretization of geodesics and apply the approach for the estimation of group trends and statistical testing of 3D shapes derived from an open access longitudinal imaging study on osteoarthritis. Y1 - 2019 U6 - https://doi.org/10.1007/978-3-030-33226-6_22 VL - 11846 SP - 209 EP - 218 ER - TY - CHAP A1 - Hanik, Martin A1 - Hege, Hans-Christian A1 - Hennemuth, Anja A1 - von Tycowicz, Christoph T1 - Nonlinear Regression on Manifolds for Shape Analysis using Intrinsic Bézier Splines T2 - Proc. Medical Image Computing and Computer Assisted Intervention (MICCAI) N2 - Intrinsic and parametric regression models are of high interest for the statistical analysis of manifold-valued data such as images and shapes. The standard linear ansatz has been generalized to geodesic regression on manifolds making it possible to analyze dependencies of random variables that spread along generalized straight lines. Nevertheless, in some scenarios, the evolution of the data cannot be modeled adequately by a geodesic. We present a framework for nonlinear regression on manifolds by considering Riemannian splines, whose segments are Bézier curves, as trajectories. Unlike variational formulations that require time-discretization, we take a constructive approach that provides efficient and exact evaluation by virtue of the generalized de Casteljau algorithm. We validate our method in experiments on the reconstruction of periodic motion of the mitral valve as well as the analysis of femoral shape changes during the course of osteoarthritis, endorsing Bézier spline regression as an effective and flexible tool for manifold-valued regression. Y1 - 2020 U6 - https://doi.org/10.1007/978-3-030-59719-1_60 SP - 617 EP - 626 PB - Springer International Publishing CY - Cham ER - TY - CHAP A1 - Hanik, Martin A1 - Hege, Hans-Christian A1 - von Tycowicz, Christoph T1 - Bi-invariant Two-Sample Tests in Lie Groups for Shape Analysis T2 - Shape in Medical Imaging N2 - We propose generalizations of the T²-statistics of Hotelling and the Bhattacharayya distance for data taking values in Lie groups. A key feature of the derived measures is that they are compatible with the group structure even for manifolds that do not admit any bi-invariant metric. This property, e.g., assures analysis that does not depend on the reference shape, thus, preventing bias due to arbitrary choices thereof. Furthermore, the generalizations agree with the common definitions for the special case of flat vector spaces guaranteeing consistency. Employing a permutation test setup, we further obtain nonparametric, two-sample testing procedures that themselves are bi-invariant and consistent. We validate our method in group tests revealing significant differences in hippocampal shape between individuals with mild cognitive impairment and normal controls. Y1 - 2020 U6 - https://doi.org/10.1007/978-3-030-61056-2_4 SP - 44 EP - 54 PB - Springer International Publishing CY - Cham ER - TY - CHAP A1 - Papazov, Chavdar A1 - Hege, Hans-Christian T1 - Blue-noise Optimized Point Sets Based on Procrustes Analysis T2 - SIGGRAPH Asia 2017 Technical Briefs Y1 - 2017 U6 - https://doi.org/10.1145/3145749.3149442 SP - 20:1 EP - 20:4 ER - TY - JOUR A1 - Oeltze-Jaffra, Steffen A1 - Meuschke, Monique A1 - Neugebauer, Mathias A1 - Saalfeld, Sylvia A1 - Lawonn, Kai A1 - Janiga, Gabor A1 - Hege, Hans-Christian A1 - Zachow, Stefan A1 - Preim, Bernhard T1 - Generation and Visual Exploration of Medical Flow Data: Survey, Research Trends, and Future Challenges JF - Computer Graphics Forum N2 - Simulations and measurements of blood and air flow inside the human circulatory and respiratory system play an increasingly important role in personalized medicine for prevention, diagnosis, and treatment of diseases. This survey focuses on three main application areas. (1) Computational Fluid Dynamics (CFD) simulations of blood flow in cerebral aneurysms assist in predicting the outcome of this pathologic process and of therapeutic interventions. (2) CFD simulations of nasal airflow allow for investigating the effects of obstructions and deformities and provide therapy decision support. (3) 4D Phase-Contrast (4D PC) Magnetic Resonance Imaging (MRI) of aortic hemodynamics supports the diagnosis of various vascular and valve pathologies as well as their treatment. An investigation of the complex and often dynamic simulation and measurement data requires the coupling of sophisticated visualization, interaction, and data analysis techniques. In this paper, we survey the large body of work that has been conducted within this realm. We extend previous surveys by incorporating nasal airflow, addressing the joint investigation of blood flow and vessel wall properties, and providing a more fine-granular taxonomy of the existing techniques. From the survey, we extract major research trends and identify open problems and future challenges. The survey is intended for researchers interested in medical flow but also more general, in the combined visualization of physiology and anatomy, the extraction of features from flow field data and feature-based visualization, the visual comparison of different simulation results, and the interactive visual analysis of the flow field and derived characteristics. Y1 - 2019 U6 - https://doi.org/10.1111/cgf.13394 VL - 38 IS - 1 SP - 87 EP - 125 PB - Wiley ER - TY - JOUR A1 - Kramer, Tobias A1 - Noack, Matthias A1 - Baum, Daniel A1 - Hege, Hans-Christian A1 - Heller, Eric J. T1 - Dust and gas emission from cometary nuclei: the case of comet 67P/Churyumov-Gerasimenko JF - Advances in Physics: X N2 - Comets display with decreasing solar distance an increased emission of gas and dust particles, leading to the formation of the coma and tail. Spacecraft missions provide insight in the temporal and spatial variations of the dust and gas sources located on the cometary nucleus. For the case of comet 67P/Churyumov-Gerasimenko (67P/C-G), the long-term obser- vations from the Rosetta mission point to a homogeneous dust emission across the entire illuminated surface. Despite the homogeneous initial dis- tribution, a collimation in jet-like structures becomes visible. We propose that this observation is linked directly to the complex shape of the nucleus and projects concave topographical features into the dust coma. To test this hypothesis, we put forward a gas-dust description of 67P/C-G, where gravitational and gas forces are accurately determined from the surface mesh and the rotation of the nucleus is fully incorporated. The emerging jet-like structures persist for a wide range of gas-dust interactions and show a dust velocity dependent bending. Y1 - 2018 U6 - https://doi.org/10.1080/23746149.2017.1404436 VL - 3 IS - 1 SP - 1404436 ER - TY - CHAP A1 - Sakurai, Daisuke A1 - Hege, Hans-Christian A1 - Kuhn, Alexander A1 - Rust, Henning A1 - Kern, Bastian A1 - Breitkopf, Tom-Lukas T1 - An Application-Oriented Framework for Feature Tracking in Atmospheric Sciences T2 - Proceedings of 2017 IEEE 7th Symposium on Large Data Analysis and Visualization (LDAV) N2 - In atmospheric sciences, sizes of data sets grow continuously due to increasing resolutions. A central task is the comparison of spatiotemporal fields, to assess different simulations and to compare simulations with observations. A significant information reduction is possible by focusing on geometric-topological features of the fields or on derived meteorological objects. Due to the huge size of the data sets, spatial features have to be extracted in time slices and traced over time. Fields with chaotic component, i.e. without 1:1 spatiotemporal correspondences, can be compared by looking upon statistics of feature properties. Feature extraction, however, requires a clear mathematical definition of the features - which many meteorological objects still lack. Traditionally, object extractions are often heuristic, defined only by implemented algorithms, and thus are not comparable. This work surveys our framework designed for efficient development of feature tracking methods and for testing new feature definitions. The framework supports well-established visualization practices and is being used by atmospheric researchers to diagnose and compare data. Y1 - 2017 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:0297-zib-66685 SP - 96 EP - 97 ER - TY - JOUR A1 - Willie, Bettina M. A1 - Pap, Thomas A1 - Perka, Carsten A1 - Schmidt, Carsten Oliver A1 - Eckstein, Felix A1 - Arampatzis, Adamantios A1 - Hege, Hans-Christian A1 - Madry, Henning A1 - Vortkamp, Andrea A1 - Duda, Georg T1 - OVERLOAD of joints and its role in osteoarthritis - Towards understanding and preventing progression of primary osteoarthritis JF - Zeitschrift für Rheumatologie N2 - Intact joints are necessary for skeletal function and mobility in daily life. A healthy musculoskeletal system is the basis for a functional cardiovascular system as well as an intact immune system. Locomotion, physiotherapy, and various forms of patient activity are essential clinical therapies used in the treatment of neurodegeneration, stroke, diabetes, and cancer. Mobility is substantially impaired with degeneration of joints and, in advanced stages, nighttime pain and sleep disturbance are particularly cumbersome. Osteoarthritis (OA) is also known as degenerative joint disease. OA involves structural and compositional changes in the articular cartilage, as well as in the calcified cartilage, subchondral cortical bone, subchondral cancellous bone, meniscus, joint capsular tissue, and synovium; which eventually lead to degeneration of these tissues comprising synovial joints. Y1 - 2015 U6 - https://doi.org/10.1007/s00393-014-1561-2 VL - 76 IS - Suppl. 1 SP - 1 EP - 4 ER - TY - JOUR A1 - Günther, Tobias A1 - Kuhn, Alexander A1 - Hege, Hans-Christian A1 - Gross, Markus A1 - Theisel, Holger T1 - Progressive Monte Carlo rendering of atmospheric flow features across scales JF - Physical Review Fluids N2 - To improve existing weather prediction and reanalysis capabilities, high-resolution and multi-modal climate data becomes an increasingly important topic. The advent of increasingly dense numerical simulation of atmospheric phenomena, provides new means to better understand dynamic processes and to visualize structural flow patterns that remain hidden otherwise. In the presented illustrations we demonstrate an advanced technique to visualize multiple scales of dense flow fields and Lagrangian patterns therein, simulated by state-of-the-art simulation models for each scale. They provide a deeper insight into the structural differences and patterns that occur on each scale and highlight the complexity of flow phenomena in our atmosphere. This paper is associated with a poster winner of a 2016 APS/DFD Milton van Dyke Award for work presented at the DFD Gallery of Fluid Motion. The original poster is available from the Gallery of Fluid Motion, https://doi.org/10.1103/APS.DFD.2016.GFM.P0030 Y1 - 2017 U6 - https://doi.org/10.1103/PhysRevFluids.2.090502 VL - 2 SP - 09050-1 EP - 09050-3 ER -