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IEEE Annual International Symposium Virtual Reality

作者： M. Unbescheiden A. Trembilski Department for Visualization & Virtual Reality Fraunhofer Institute of Computer Graphics Research (IGD) Darmstadt Germany

In this paper, we present a new method of simulating and visualizing smoke and steam clouds in virtual environments (VEs). We use a particle system approach, but reduce the particle numbers to decrease the computation and rendering times. Special care, however is taken for the presentation quality of the clouds. From every viewing point (even within the clouds), the VE user does not have the impression that the clouds are hollow polyhedrons, but rather fuzzy objects.

关键词： Clouds Computational modeling Virtual environment Animation Data visualization Urban planning Fires Layout Virtual reality computer graphics

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A hybrid web-based toolkit for human modeling

A hybrid web-based toolkit for human modeling

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1997 Scientific visualization Conference, dagstuhl 1997

作者： Bender, M. Klein, R. Ebert, A. Rodrian, H. Computer Graphics Group Department of Computer Science University of Kaiserslautern Germany Intelligent Visualization and Simulation Systems German Research Center for Artificial Intelligence GmbH Germany Human Modeling Department TECMATH GmbH and Co. KG Kaiserslautern Germany

ISBN: (纸本)0769505031

Modern web-based Scientific visualization applications try to overcome common limitations imposed by limited internet bandwidth, server bottlenecks or network latency. A further aspect is the desire to gain platform independence by solely using instruments which are platform independent by conception: the programming language Java, the Virtual Reality Modeling Language (VRML), or the 3D API *** present a prototype of a hybrid web-based Scientific visualization system which makes use of the increasing computational power of modern desktop workstations and personal computers on the client side, and the superior performance provided by a powerful machine on the server side. In order to achieve high interaction rates and to balance computational load the user can dynamically assign selected tasks to his client or to the *** the scientific field of human modeling we have implemented a hybrid web-based toolkit for the modeling of human muscles and skin. Our application allows the on-line generation and manipulation of three-dimensional implicit muscle models in a heterogeneous network and it offers various parameters to adjust computation and response time versus rendering quality. © 1997 IEEE computer Society.

关键词： Heterogeneous networks

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Image plane interaction techniques in 3D immersive environments 97

Image plane interaction techniques in 3D immersive environme...

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Proceedings of the 1997 symposium on Interactive 3D graphics

作者： Jeffrey S. Pierce Andrew S. Forsberg Matthew J. Conway Seung Hong Robert C. Zeleznik Mark R. Mine Department of Computer Science University of Virginia Charlottesville VA Brown University site of the NSF Science and Technology Center for Computer Graphics and Scientific Visualization Providence RI Department of Computer Science University of North Carolina Chapel Hill NC

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A Hybrid Web-Based Toolkit for Human Modeling

A Hybrid Web-Based Toolkit for Human Modeling

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IEEE Scientific visualization Conference (SciVis)

作者： M. Bender R. Klein A. Ebert H. Rodrian Computer Graphics Group Department of Computer Science University of Kaiserslautern Germany Human Modeling Department TECMATH GmbH and Company KG Kaiserslautern Germany Intelligent Visualization and Simulation Systems German Research Center for Artificial Intelligence Germany

关键词： Humans visualization Delay Java Muscles IP networks Bandwidth Network servers Web server Performance gain

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PaperLink: a technique for hyperlinking from real paper to electronic content 97

PaperLink: a technique for hyperlinking from real paper to e...

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Proceedings of the ACM SIGCHI Conference on Human factors in computing systems

作者： Toshifumi Arai Dietmar Aust Scott E. Hudson Hitachi Researeh Laboratory Hitachi Ltd. 1-10mika-cho 7-chome Hitachi Ibaraki 319-12 Japan University of Dortmund Department of Computer Graphics Otto-Hahn Str. 16 44221 Dortmund Germany Georgia Institute of Technology Graphics Visualization and Usability Center and College of Computing Atlanta Georgia

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VR techniques for the investigation of molecule data

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computerS & graphics 1996年第2期20卷 207-217页

作者： Haase, H Strassner, J Dai, F Department of Visualization and Simulation Fraunhofer Institute for Computer Graphics (Fraunhofer IGD) Wilhelminenstr. 7 D-64283 Darmstadt Germany

This paper describes a system for investigating molecule data. By means of combined Virtual Environment and Scientific visualization techniques it allows for immersive exploration of individual molecules as well as for investigation of docking behaviour between two molecules. Special emphasis is put on good interaction (simultaneous operation of two input devices with 6 degrees of freedom each, virtual menus), on fast rendering of large molecules in high quality (level of detail, fast rendering of spheres, utilization of multiple rendering pipelines, sorted triangle strips for transparent surfaces), and on other perceptual issues (e.g. judgement of position and size of molecules by shadows). The techniques which were realized for this system may also be used in other applications like assembly tasks, virtual material testing, etc. (C) 1996 Elsevier Science Ltd

关键词： Virtual reality

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Developing a prototype concurrent design tool for composite topside structures

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NAVAL ENGINEERS JOURNAL 1997年第3期109卷 279-290页

作者： Dirlik, S Hambric, S Azarm, S Marquardt, M Hellman, A Bartlett, S Castelli, V Steve Dirlik:began his career at the Naval Surface Warfare Center Carderock Division in 1981 as an aerospace engineer co-op student. He completed his bachelor of science degree in aeropace and ocean engineering from Virginia Polytechnic Institute and State University in 1985 and his master of science degree in aerospace engineering from the University of Maryland in 1990. Mr. Dirlik recently completed a master of science program in applied physics at The Johns Hopins University and currently works in the Radar Cross Section and Target Physics Branch of the Signatures Directorate at the Naval Surface Warfare Center Corderoke Division. He has worked on Navy low observable programs since 1990. Stephen Hambric:is a research associate at the Applied Research Laboratory at The Pennsylvania State University. He received his B. S. and M.S. degree in mechanical engineering from Virginia Polytechnic Institute and State University and his D. Sc. in mechnical engineering from the George Washington University. He has worked on several computer aided multidiscikplinary design and optimization projects over the years including an automated propeller design system and a structural acoustic optimization capability. Dr. Shpour Azarm:is currently working as an associate professor with the Design and Manufacturing Group of the Department of Mechanical Engineering at the University of maryland at College Park. Dr Azarm's expertise is in the areas of optimization-based designed and concurrent design and optimization of multidisciplinary systems. He was a consultant at Black & Decker Corporation (summer 1996) and worked as a Navy senior summer faculty fellow (summer 1995) and a NASA summer faculty fellow (summer 1994). He was a visiting scientist at NASA Langley Research Center for Multidisciplinary Analysis and Applied Structural Optimzatiom at the University of Siegen in Germany (spring 1992) and the Design Institute of the Technical University of Denmark (summer 1990). Dr Azarm was an associate technical editor of the ASME Jour

A prototype concurrent engineering tool has been developed for the preliminary design of composite topside structures for modern navy warships. This tool, named GELS for the Concurrent Engineering of Layered Structures, provides designers with an immediate assessment of the impacts of their decisions on several disciplines which are important to the performance of a modern naval topside structure, including electromagnetic interference effects (EMI), radar cross section (RCS), structural integrity, cost, and weight. Preliminary analysis modules in each of these disciplines are integrated to operate from a common set of design variables and a common materials database. Performance in each discipline and an overall fitness function for the concept are then evaluated. A graphical user interface (GUI) is used to define requirements and to display the results from the technical analysis modules. Optimization techniques, including feasible sequential quadratic programming (FSQP) and exhaustive search are used to modify the design variables to satisfy all requirements simultaneously. The development of this tool, the technical modules, and their integration are discussed noting the decisions and compromises required to develop and integrate the modules into a prototype conceptual design tool.

关键词： Warships

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Head-tracked orbital viewing: an interaction technique for immersive virtual environments 96

Head-tracked orbital viewing: an interaction technique for i...

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Proceedings of the 9th annual ACM symposium on User interface software and technology

作者： David R. Koller Mark R. Mine Scott E. Hudson Graphics Visualization & Usability Center College of Comuputing Georgia Institute of Technology Atlanta GA Department of Computer Science University of North Carolira Chapel Hill NC

No abstract available.

ISBN: (纸本)9780897917988

No abstract available.

关键词： interaction metaphors head-tracking viewpoint selection steering virtual environments

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VIRTUAL-REALITY ARTHROSCOPY TRAINING SIMULATOR

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computerS IN BIOLOGY AND MEDICINE 1995年第2期25卷 193-+页

作者： ZIEGLER, R FISCHER, G MULLER, W GOBEL, M Fraunhofer Institute for Computer Graphics Department of Visualization and Simulation Wilhelminenstr. 7 D-64283 Darmstadt Germany

This paper describes the result of the interdisciplinary cooperation of traumatologists of the Berufsgenossenschaftliche Unfallklinik (BGU) in Frankfurt am Main and a team of computer graphics scientists of the Fraunhofer Institute for computer graphics in Darmstadt. We have developed a highly interactive training simulator system by means of computer graphics and virtual reality techniques.

关键词： VIRTUAL REALITY (VR) IN MEDICINE VR TRAINING SIMULATOR computer graphics IN MEDICINE ARTHROSCOPY TRAINING SIMULATOR

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Heterogeneous morphing of multimodal medical information 6th

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6th International Conference on computer Analysis of Images and Patterns, CAIP 1995

作者： Jankovič, Vojtech Ružický, Eugen Gröller, Eduard Department of Computer Graphics and Image Processing Comenius University Bratislava842 15 Slovakia Department of Visualization and Animation Institute of Computer Graphics Technical University Vienna Austria

ISBN: (纸本)3540602682

The paper presents a general non-rigid body representation for physically-based modeling of dynamic behaviour of heterogeneous objects and its application in a development of a new heterogeneous morphing technique to solve distortion correction problems arising in the medical data processing. The proposed representation provides a simply applicable tool for modeling of real medical objects allowing fast and reliable calculation of geometric deformations and simulation of dynamic behaviour in a heterogeneous environment when only a few initial landmark displacements are known. The proposed method is applied in a distortion correction process of CT medical data sets, especially in an automatic processing of heterogeneous CT scans of human brain. © Springer-Verlag Berlin Heidelberg 1995.

关键词： computerized tomography

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