Computer Animation and Simulation ’96: Proceedings of the Eurographics Workshop in Poitiers, France, August 31–September 1, 1996 PDF
Preview Computer Animation and Simulation ’96: Proceedings of the Eurographics Workshop in Poitiers, France, August 31–September 1, 1996
Series Editors w. Hansmann W T. Hewitt W. Purgathofer R. Boulic and G. Hegron (eds.) Computer Animation and Simulation '96 Proceedings of the Eurographics Workshop in Poitiers, France, August 31-September 1, 1996 Eurographics SpringerWienNewYork Dr. Ronan Boulic Computer Graphics Laboratory, Swiss Federal Institute of Technology, Lausanne, Switzerland Dr. Gerard Hegron Ecole des Mines de Nantes, Nantes Cedex, France This work is subject to copyright. All rights are reserved, whether the whole or part of the material is concerned, specifically those of translation, reprinting, re-use of illustrations, broadcasting, reproduction by photocopying machines or similar means, and storage in data banks. © 1996 Springer-Verlag/Wien Typesetting: Camera ready by authors Graphic design: Ecke Bonk Printed on acid-free and chlorine-free bleached paper With 152 partly coloured Figures ISSN 0946-2767 ISBN-13: 978-3-211-82885-4 e-ISBN-13: 978-3-7091-7486-9 DOl: 10.1007/978-3-7091-7486-9 Preface This volume contains research papers presented at the Seventh Eurographics Workshop on Computer Animation and Simulation which took place at Poitiers, France, August 31st-September 1st, 1996. In this preface we first outline the workshop reviewing process. Then we describe the scope of the present venue and show how the workshop WEB pages are useful even after the workshop. Finally we wish to acknowledge all the persons who dedicated their precious time helping us making 96 venue a success. Process. This year's Call for Papers was publicized electronically more than ever before. The workshop WWW home page received a sustained rate of visitors as links and notifications were made at Eurographics'96, Eurographics Association, and at public or private servers. Thirty one full papers have been submitted. Each submitted paper has been reviewed by three members of the international program committee, namely: Bruno Amaldi (IRISA I INRIA Rennes, France) Norman Badler (University of Pennsylvania, USA) Michael Cohen (Microsoft, USA) Sabine Coquillart (INRIA, France) Marie-Paule Gascuel (iMAGIS-IMAG, France) Pedro Lopes (INESC Multimedia Centre, Portugal) Annie Luciani (ACROE-IMAG, France) Nadia Magnenat-Thalmann (University of Geneva, Switzerland) Kees van Overveld (Eindhoven University of Technology, The Netherlands) Demetri Terzopoulos (University of Toronto, Canada) Daniel Thalmann (Swiss Federal Institute of Technology, Switzerland) Michiel Van de Panne (University of Toronto, Canada) David Zeltzer (Massachusetts Institute of Technology, USA) Whenever necessary the senior reviewers have co-opted additional experts in the reviewing process. We are grateful to the following for accepting this task: Pascal Becheiraz (Swiss Federal Institute of Technology, Switzerland) Pierre Beylot (University of Geneva, Switzerland) Mathieu Desbrun (iMAGIS-IMAG, France) Jean Loup Florens (ACROE-IMAG, France) Manuel Noronha Gamito (INESC Multimedia Centre, Portugal) Jean Marc Jot (INA,France) Prem Kalra (University of Geneva, Switzerland) Alexis Lamouret (University of Toronto, Canada) Jean Louchet (INRIA, France) Laurent Moccozet (University of Geneva, Switzerland) Hansruedi Noser (Swiss Federal Institute of Technology, Switzerland) Igor Pandzic (University of Geneva, Switzerland) Marcia Riley (University of Geneva, Switzerland) Jos Starn (INRIA, France) VI am Based on the reviews, we selected fourteen papers for presentation at the workshop invite the authors to prepare the final version for inclusion in this volume. Scope. We are especially pleased with the scope, innovation and general quality of EGCAS'96. Important contributions cover three major research streams of Computer Animation and Simulation: • Real-Time Animationfor 3D Interaction: in this rapidly growing field the need for adaptive techniques is vital to ensure the animation at a minimum interactive frame rate. Original techniques have been proposed to update the visibility map, refine mass/Spring simulations and optimize the display of very large particle systems. Real-Time Performance Animation have also been explored for human motion capture. • Fast and Intuitive Animation Design Methodology: One major problem in animation design is the compromise an animator is faced with when required to design a complex realistic motion. Simulation-based tools leave little room for creativity while keyframe-based systems require considerable experience to produce the illusion of reality (along with desired behavioral and emotional effect). Some articles presented in the presented here address the problem of motion reusability which includes motion database management and motion composition from desired high level input. One very interesting approach introduces the concept of plausible motion design. • Simulation of Complex and Dynamic Scenes: the real world is complex but new models and animation methods help to represent it in very efficient way as demonstrated here for deformable objects, plants, fire, and even the human anatomy. The proposed methodologies, some with prototype implementations, bring solutions to currently open issues and pave the way for the next generation of Animation softwares. WWW.This year for the first time a WEB site has been setup to diffuse information about the workshop. As we discovered by the responses of contributors, the WEB is now the second means by which potential authors get to know the existence of the workshop (the first being the activity of program committee members and the workshop notoriety). Another important reason for maintaining such a site after the EGCAS'96 : providing links to authors pages and especially to the animation files they cannot show on a printed media. So the 96 workshop site now gathers all the WEB addresses mentioned in the articles under the keyword Animation(s). As links may be a volatile information, the workshop site page is the best place to maintain up-to-date information. We hope that our informal approach becomes more stable with the help of the Eurographics association and the publisher. The workshop WEB address is: http://ligwww.epfl.ch/-boulic/egcas96/egcas96.htrnl VII Acknowledgments. The workshop mostly owes its high quality to the careful arxl insightful work of all the reviewers. The local organizer, Michel Meriaux, of the University of Poitiers notably contributed to provide a harmonious environment including, among other strategic aspects, the two lunches. Our gratitude goes to the Eurograpbics Association and to Werner Hansmann of University of Hamburg, to Terry Hewitt of University of Manchester and especially to Werner Purgathofer of the Technical University of Vienna, for their support in publishing the workshop as a volume of the Springer-Verlag Eurograpbics Series. We thank Xaviar Pueyo of the University of Girona and Carlo Vandoni from CERN for helping in publicizing the workshop. We are grateful to Sabine Coquillart, of INRIA, for adding the workshop WEB link to Eurographics'96 WEB page and to Ivan Herman of the Research Center in Computer Science of Amsterdam, for the same precious update of Eurograpbics Association WEB page. Last but not least, we wish to thank Srikanth Bandi of EPFL for proof-reading this text. We acknowledge financial support from the following funding agencies: Boulic was supported by the Swiss Federal Institute of Technology and the Swiss Foundation for Research. Hegron was supported by I'Ecole des Mines de Nantes and the French Ministry ofIndustry. Ronan Boulic (Co-Chair) Gerard Hegron (Co-Chair) Swiss Federal Institute of Technology Ecole des Mines de Nantes Lausanne, Switzerland Nantes, France Contents 1. Adaptive Optimization Techniques Incremental Update of the Visibility Map as Seen by a Moving Viewpoint in Two Dimensions ................................................................................................. 3 S. Ghali, A.I. Stewart Adaptive Sampling of Very Large Particle Systems Using an Incremental Self- Organizing Feature Map: an Application in Molecular Dynamic .......................... 15 L. Balmelli Adaptive Refinement for Mass/Spring Simulations ........................................... 31 D. Hutchinson, M. Preston, T. Hewitt 2. Animation of Deformable Objects A Fire Model for 2-D Computer Animation .................................................... .49 I. Yu, I.W. Patterson Smoothed Particles: a New Paradigm for Animating Highly Deformable Bodies ...... 61 M. Desbrun, M.P. Gascuel 3. Human Motion Capture and Simulation A Real Time Anatomical Converter for Human Motion Capture .......................... 79 T. Molet, R. Boulic, D. Thalmann A High Level Control Mechanism for Human Locomotion Based on Parametric Frame Space Interpolation ............................................................................ 95 S. Guo, I. Roberge Simulating Human Movements Using Optimal Control... ................................ 109 x. Zhao, D. Tolani, B.-Y. Ting, N.!. Badler A Biomechanical Musculoskeletal Model of Human Upper Limb for Dynamic Simulation ............................................................................................... 121 W. Maurel, D. Thalmann, P. Hoffmeyer, P. Beylot, P. Gingins, P. Kalra, N. Magnenat Thalmann x 4. Plant Development Interactive Modelling and Animation of Branching Botanical Structures ............... 139 B. Lintermann, O. Deussen An Efficient Estimation of Light in Simulation of Plant Development... ............. 153 B.Benes 5. Motion Control and Motion Management A Planning Algorithm for Dynamic Motions ................................................. 169 P.S. Huang, M. van de Panne Plausible Motion Simulation for Computer Animation .................................... 183 R. Barzel, J.F. Hughes, D.N. Wood Motion Synthesis by Example ..................................................................... 199 A. Lamouret, M. van de Panne Appendix: Colour Illustrations ........................................................... 213 1 Adaptive Optimization Techniques
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