Lecture Notes in Computer Science Commenced Publication in 1973 Founding and Former Series Editors: Gerhard Goos, Juris Hartmanis, and Jan van Leeuwen Editorial Board David Hutchison Lancaster University, UK Takeo Kanade Carnegie Mellon University, Pittsburgh, PA, USA Josef Kittler University of Surrey, Guildford, UK Jon M. Kleinberg Cornell University, Ithaca, NY, USA Alfred Kobsa University of California, Irvine, CA, USA Friedemann Mattern ETH Zurich, Switzerland John C. Mitchell Stanford University, CA, USA Moni Naor Weizmann Institute of Science, Rehovot, Israel Oscar Nierstrasz University of Bern, Switzerland C. Pandu Rangan Indian Institute of Technology, Madras, India Bernhard Steffen TU Dortmund University, Germany Madhu Sudan Microsoft Research, Cambridge, MA, USA Demetri Terzopoulos University of California, Los Angeles, CA, USA Doug Tygar University of California, Berkeley, CA, USA Gerhard Weikum Max-Planck Institute of Computer Science, Saarbruecken, Germany 5862 Morten Dæhlen Michael Floater Tom Lyche Jean-Louis Merrien Knut Mørken Larry L. Schumaker (Eds.) Mathematical Methods for Curves and Surfaces 7th International Conference, MMCS 2008 Tønsberg, Norway, June 26 – July 1, 2008 Revised Selected Papers 13 Volume Editors Morten Dæhlen University of Oslo, Norway E-mail:
[email protected] Michael Floater University of Oslo, Norway E-mail:
[email protected] Tom Lyche University of Oslo, Norway E-mail:
[email protected] Jean-Louis Merrien INSA de Rennes, France E-mail:
[email protected] Knut Mørken University of Oslo, Norway E-mail:
[email protected] Larry L. Schumaker Vanderbilt University, Nashville, TN, USA E-mail:
[email protected] Library of Congress Control Number: 2010921005 CR Subject Classification (1998): I.3.5, I.4.8, G.1.1-2, F.2.2, G.2, J.6 LNCS Sublibrary: SL 1 – Theoretical Computer Science and General Issues ISSN ISBN-10 ISBN-13 0302-9743 3-642-11619-1 Springer Berlin Heidelberg New York 978-3-642-11619-3 Springer Berlin Heidelberg New York This work is subject to copyright. All rights are reserved, whether the whole or part of the material is concerned, specifically the rights of translation, reprinting, re-use of illustrations, recitation, broadcasting, reproduction on microfilms or in any other way, and storage in data banks. Duplication of this publication or parts thereof is permitted only under the provisions of the German Copyright Law of September 9, 1965, in its current version, and permission for use must always be obtained from Springer. Violations are liable to