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IEEE EMBS International Summer School on Biomedical Imaging

作者： S. Balcisoy M. Kallman R. Torre P. Fua D. Thalman Computer Graphics Laboratory Swiss Federal Institute of Technology Lausanne Switzerland Ecole Polytechnique Federale de Lausanne Lausanne VD CH Comput. Graphics Lab. Swiss Fed. Inst. of Technol. Lausanne Switzerland

Homogenous virtual environments evolved into mixed environments thanks to recent augmented reality techniques. We have done research on novel interaction techniques in virtual environments exploiting the usage of 3D virtual space. We will briefly present our augmented reality set-up for mixed reality experiments and we will analyze two distinct mixed environment case studies, and present two new interaction techniques where we use virtual humans as mediators between the real and virtual world.

关键词： Humans Virtual environment Augmented reality Workstations Animation Virtual reality Rendering (computer graphics) Biological system modeling computer graphics Space technology

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A Web adaptive educational system for people with hearing difficulties

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Education and Information Technologies 2000年第3期5卷 189-200页

作者： Markellou, Penelope Rigou, Maria Sirmakessis, Spiros Tsakalidis, Athanasios Computer Engineering and Informatics Department Multimedia Graphics and GIS Lab. University of Patras Patras 26500 Greece Internet and Multimedia Technologies Research Unit Computer Technology Institute Patras 26221 61 Riga Feraiou Str. Greece

In this paper we present a web adaptive educational tool for the Greek Sign Language. The design and the implementation of the tool were partially funded by national bodies. The paper presents the architecture of the tool, in an abstract way and briefly describes its functionality. The interaction process followed is also presented. © 2000 Kluwer Academic Publishers.

关键词： Architecture Hearing difficulties Interactive learning Sign language

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Crowd modelling in Collab.rative Virtual Environments 98

Crowd modelling in Collaborative Virtual Environments

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ACM Symposium on Virtual Reality Software and technology, VRST 1998

作者： Musse, Soraia R. Babski, Christian Çapin, Tolga Thalmann, Daniel Computer Graphics Lab. Swiss Federal Institute ot Technology EPFL DI-LIG CH 1015 Lausanne Switzerland

ISBN: (纸本)1581130198

This paper presents a crowd modelling method in Collab.rative Virtual Environment (CVE) which aims to create a sense of group presence to provide a more realistic virtual world. An adaptive display is also presented as a key element to optimise the needed information to keep an acceptable frame rate during crowd visualisation. This system has been integrated in the several CVE platforms which will be presented at the end of this paper. © 1998 ACM.

关键词： Autonomous agents

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Automated camera calibration and 3D egomotion estimation for augmented reality applications 7th

Automated camera calibration and 3D egomotion estimation for...

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7th International Conference on computer Analysis of Images and Patterns, CAIP 1997

作者： Koller, Dieter Klinker, Gudrun Rose, Eric Breen, David Whitaker, Ross Tuceryan, Mihran Munich81925 Germany EE Dept. California Inst. of Technology MC 136-93 PasadenaCA91125 United States Autodesk Inc. 2465 Latham St. Suite 101 Mountain ViewCA94040 United States Computer Graphics Lab. California Inst. of Technology MC 348-74 PasadenaCA91125 United States EE Dept. 330 Fen-is Hall U. of Tennessee KnoxvilleTN37996-2100 United States Dept of Comp and Info Science IUPUI 723 W. Michigan St IndianapolisIN46202-5132 United States

ISBN: (纸本)3540634606

This paper addresses the problem of accurately tracking the 3D motion of a monocular camera in a known 3D environment and dynamically estimating the 3D camera location. For that purpose we propose a fully automated landmark based camera calibration method and initialize a motion estimator, which employes extended Kalman filter techniques to track landmarks and to estimate the camera location at any given time. The implementation of our approach has been proven to be efficient and robust and our system successfully tracks in real-time at approximately 10 Hz. We show tracking results of various augmented reality scenarios. © Springer-Verlag Berlin Heidelberg 1997.

关键词： Augmented reality

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A model of nonverbal communication and interpersonal relationship between virtual actors

A model of nonverbal communication and interpersonal relatio...

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computer Animation

作者： P. Becheiraz D. Thalmann Comput. Graphics Lab. Swiss Federal Inst. of Technol. Lausanne Switzerland Computer Graphics Laboratory Swiss Federal Institute of Technology Lausanne Switzerland

The paper presents a model of nonverbal communication and interpersonal relationship between virtual actors. Nonverbal communication improves their believability. They react not only to the presence of the other actors but also to their postures. Furthermore, their interpersonal relationships me affected by the issue of social interactions. To avoid homogenous group behaviors, each actor is set with a different character profile. We present an application of this model to create actors involved in social interactions in a virtual public garden. The animation of virtual actors is based on the library AGENTlib which is dedicated to the management of agent entities able to coordinate perception and action.

关键词： Animation Libraries computer graphics Natural languages Context Communication system control Layout Humans Processor scheduling

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The animation of autonomous actors based on production rules

The animation of autonomous actors based on production rules

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computer Animation

作者： H. Noser D. Thalmann Computer Graphics Laboratory Swiss Federal Institute of Technology Lausanne Switzerland Ecole Polytechnique Federale de Lausanne Lausanne VD CH Comput. Graphics Lab. Swiss Federal Inst. of Technol. Lausanne Switzerland

We present a formal theory of a behavioral L-system and describe as application a real time structured L-system interpreter. The behavioral L-system is a timed, conditional, stochastic, parametric and environmentally sensitive L-system which allows besides the modeling of plant and fractal development the description and animation of autonomous actors completely defined by production rules. A virtual environment including geometric objects, force fields and sounds and the behaviors of actors can be defined using the same formalism of the behavioral L-systems.

关键词： Animation Production systems Stochastic systems Virtual environment Context modeling computer graphics Application software Biological system modeling Continuous production Differential equations

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Automatic derivation of curved human walking trajectories from synthetic vision

Automatic derivation of curved human walking trajectories fr...

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1994 IEEE Conference on computer Animation, CA 1994

作者： Boulic, Ronan Noser, Hansrudi Thalmann, Daniel Computer Graphics Lab. Swiss Federal Institute of Technology LausanneCH1015 Switzerland

ISBN: (纸本)0818662409

The scope of this paper is to propose a system for the automatic derivation of a human curved walking trajectory from the analysis provided by its synthetic vision module. The study context is a planar environment with still and sparse foothold locations. A general methodology associates the two low-level modules of vision and walking with a planification module which establishes the middle term path from the knowledge of the visualized environment. The Planification is made under the constraint of minimizing the distance, the speed variation and the curvature cost. Moreover, the planification may trigger the alternate walking motion whenever the decreasing in curvature cost is higher than the associated increasing in speed variation cost due to the corresponding halt and restart. Finally, the characteristic of the next step location is derived in the context of a constant velocity walking motion along a circular trajectory. © 1994 IEEE.

关键词： Motion planning

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Dressing animated synthetic actors with complex deformable clothes 92

Dressing animated synthetic actors with complex deformable c...

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Proceedings of the 19th annual conference on computer graphics and interactive techniques

作者： Michel Carignan Ying Yang Nadia Magnenat Thalmann Daniel Thalmann MIRALab HEC. University of Montreal Canada MIRALab University of Geneva Computer Graphics Lab. Swiss Federal Institute of Technology

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A global human walking model with real-time kinematic personification

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The Visual computer 1990年第6期6卷 344-358页

作者： Boulic, Ronan Thalmann, Nadia Magnenat Thalmann, Daniel Computer Graphics Lab. Swiss. Federal Institute of Technology Lausanne CH-1015 Switzerland Centre Universitaire d'Informatique Geneva CH-1207 12 rue du Lac Switzerland

This paper presents a human walking model built from experimental data based on a wide range of normalized velocities. The model is structured on two levels. On the first level, global spatial and temporal characteristics (normalized length and step duration) are generated. On the second level, a set of parameterized trajectories produce both the position of the body in space and the internal body configuration. This is performed for a standard structure and an average configuration of the human body. The experimental context corresponding to the model is extended by allowing a continuous variation of global spatial and temporal parameters according to the motion rendition expected by the animator. The model is based on a simple kinematic approach designed to keep the intrinsic dynamic characteristics of the experimental model. Such an approach also allows a personification of the walking action in an interactive real-time context in most cases. A correction automata of such motion is then proposed. © 1990 Springer-Verlag.

关键词： Animation Biomechanics Gait Inverse kinematics Walk

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Abstracts

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Environmental Management 1977年第1期1卷 67-96页

作者： Frankenfeld, John W. Schulz, Wolfgang McMurty, George J. Petersen, Gary W. May, G. A. Hering, F. S. Schwartz, J. I. Heywood, J. B. Chigier, N. A. Grohse, E. W. Walker, J. D. Colwell, R. R. Petrakis, L. Pergament, H. S. Thorpe, R. D. Schoepf, Richard W. Krzyczkowski, Roman Henneman, Suzanne S. Hudson, Charles L. Putnam, Evelyn S. Thiesen, Donna J. Parks, G. A. McCarty, Perry L. Leckie, J. O. Schrumpf, Barry J. Simonson, G. H. Paine, D. P. Lawrence, R. D. Pyott, W. T. Leh, M. Elders, W. Combs, J. Caplen, T. Harrison, F. L. Wong, K. M. Heft., R. E. Charnell, Robert L. Lehmann, Edward J. Mallon, Lawrence G. Hatfield, Cecile Adams, Gerald H. Johanning, James Talvitie, Antti Noll, Kenneth E. Miller, Terry Smiarowski, Joseph F. Willis, Cleve E. Foster, John H. Schlesinger, Benjamin Daetz, Douglas Lear, Donald U. Smith, Mona F. Hundemann, Audrey S. Crockett, Pernell W. Werner, Kirk G. Carroll, Thomas E. Maase, David L. Genco, Joseph E. Ifeadi, Christopher N. Lowman, F. G. Christensen, S. W. Van Winkle, W. Mattice, J. S. Harrison, Elizabeth A. Barker, James C. Chesness, Jerry L. Smith, Ralph E. Shaheeen, Donald G. Raney, R. Keith Borton, T. Wezernak, C. T. Raney, R. K. Sherwani, Jabbor K. Moreau, David H. Eisenberg, Norman A. Lynch, Cornelius J. Breeding, Roger J. Johnson, J. D. Foster, K. E. Mouat, D. A. Clark, R. Hyden, John William Owen, Wilfred Bayfield, Neil G. Barrow, Graham C. Stolz, Stephanie B. Wienckowski, Louis A. Brown, Betram S. Keyfitz, Nathan Wilson, W. L. Newman, Peter W. G. Bammi, Deepak Bammi, Dalip Goddard, James E. Chisholm, Tony Walsh, Cliff Brennan, Geoffrey Thompson, K. S. Richardson, R. Jensen, Clayton E. Brown, Dail W. Mirabito, John A. Cowing, Thomas G. Binghamton, Suny Siehl, George H. Albrecht, O. W. Alexander, Ariel Barde, Jean -Philippe Darby, William P. McMichael, Francis Clay Dunlap, Robert W. Muckleston, Keith W. Frankenhoff, Charles A. Giulini, Lorenzo T. Wyatt, T. Black, Peter E. Keating, William Thomas Leonard, M. E. Fisher, E. L. Brunelle, M. F. Dickinson, J. E. Pethig, Rudiger Clapham Exxon Research & Engineering Co. Linden Government Research Lab Coast Guard Washington D.C. Department of Transportation Washington D.C. Office For Remote Sensing of Earth Resources. NASA Earth Resources Survey Program Pennsylvania State University Washington D.C. Department of the Navy Washington D.C. Cambridge. Dept. of Mechanical Engineering Massachusetts Inst. of Technology USA Huntsville. School of Graduate Studies and Research Alabama Univ. USA Dept. of Microbiology. Office of Naval Research Maryland Univ. Arlington Research and Development Co. Pittsburgh AeroChem Research Labs. Inc. Princeton Dept. of the Interior Office of Library Services. Bibliographic Series (Final) Washington D.C. Interplan Corp. Santa Barbara Urban Mass Transportation Adm. Washington D.C. Naval Underwater Systems Center Newport Calif. Mercury Project. National Science Found Stanford Univ Washington D.C. Div. of Advanced Environmental Research & Tech. USA Corvallis. NASA Earth Resources Survey Program Oregon State Univ. Washington D.C. Riverside. Inst. of Geophysics and Planetary Physics National Science Foundation California Univ. Washington D.C. Livermore Lawrence Livermore Lab. California Univ. USA Atlantic Oceanographic and Meteorological Labs. National Oceanic and Atmospheric Administration Miami National Technical Information Service Springfield Miami Univ. Coral Gables School of Law National Oceanic and Atmospheric Administration Rockville National Academy of Sciences Office of Sea Grant Washington D. C. School of Law National Oceanic and Atmospheric Administration Office of Sea Grant. Rockville Norman. Dept. of Civil Engineering and Environmental Science. Urban Mass Transportation Administration Oklahoma Univ. Washington D. C. Knoxville.Dept. of Civil Engineering. Federal Highway Administration Tennessee Univ. Washington D. C. Amherst.Water Resources Research Center. Office of Water Research and Technology Massachusetts Univ. Washington D. C. Calif. Dept. of Industria

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