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Note: All presentations will take place in Kane
Hall, Room 110.
Wednesday, June 18th
8:15 - 8:30 am - Opening Comments
8:30 - 9:30 am - Keynote Lecture
Session Chair - Myung-Soo Kim
Shape Interrogation
Nicholas M. Patrikalakis, MIT - Bio
Shape interrogation is the process of extraction of information
from a
geometric model. It is a fundamental component of CAD/CAM systems.
In this lecture, we focus on shape interrogation of geometric models
bounded by free-form or sculptured surfaces. Such surfaces are widely
used in the bodies of ships, automobiles, aircraft, propeller and
turbine blades, and various consumer devices. Our basic thesis is
that shape interrogation problems can usually be recast in terms
of
the solution of a nonlinear system of equations, typically a
polynomial system. Much of our work is based on the Interval
Projected Polyhedron (IPP) Algorithm, which reduces a continuous
shape
interrogation problem into the discrete problem of computing convex
hulls and their intersections. In this way, a bridge between the
largely disparate fields of geometric modeling of free-form shapes
(based on numerical analysis and approximation theory) and discrete
computational geometry (based on the theory of algorithms and
combinatorics) is established. Various applications arising from
surface intersections, distance function computations, global
differential geometry of curves and surfaces, and offsets are
described and are reduced to the same unified solution framework.
A
discussion of unresolved problems in this area is also provided.
9:30 - 9:45 am - Break
9:45 - 11:00 am - Session 1: Motions & Transformations
Session Chair - Alexander Pasko
Collision Prediction for Polyhedra under Screw Motions
ByungMoon
Kim, Jarek Rossignac
Fast Swept Volume Approximation of Complex Polyhedral Models
Young J. Kim, Gokul Varadhan, Ming C. Lin, Dinesh Manocha
Contour generators of implicit surfaces
Simon Plantinga and
Gert
Vegter
11:00 - 11:15 am - Break
11:15 am - 12:30 pm - Session 2: Constraints & Features
Session Chair - Tamal Dey
Transforming
an under-constrained geometric constraint problem
into a well-constrained one
R. Joan-Arinyo, A. Soto-Riera,
S. Vila-Marta, J. Vilaplana
Geometric Constraint Solving via C-tree Decomposition
Xiao-Shan
Gao, Gui-Fang Zhang
Specification of Freeform Features
Eelco van den Berg, Rick
van
der Meiden, Willem F. Bronsvoort
12:30 - 2:00 pm - Lunch
2:00 - 3:40 pm - Session 3: Skeletal/Medial Axis Representations
Session Chair - Duane Storti
Any
open bounded Subset of $R^n$ has the same homotopy type than
its Medial Axis
Andre Lieutier
Automating the CAD/CAE Dimensional Reduction Process
Krishnan
Suresh.
Approximation by skin surfaces
Nico Kruithof, Gert Vegter
Efficient Computation of Simplified Medial Axes
Mark
Foskey, Dinesh Manocha, Ming C. Lin
3:40 - 5:00 pm - Poster Session
Graph Based Topological Analysis of Tessellated
Surfaces
Dibakar Sen, Tula Ram Ban
Approximating the medial axis for CAD models
Tamal K. Dey, Hyuckje
Woo, Wulue Zhao
Adaptive Multiresolution and Quality 3D Meshing from Imaging
Data
Yongjie Zhang, Chandrajit L. Bajaj, Bong-Soo Sohn
Feature Preserving Manifold Mesh from an Octree
Koji Ashida Norman
I. Badler
Direct Incremental Transmission of Boundary Representation
Jie
Li, Shuming Gao, Xun Zhou
Representation of non-manifold objects in arbitrary dimension
through decomposition into nearly manifold parts
Leila De Floriani, Franco
Morando and Enrico Puppo
Constrained modifications of non manifold b-reps
Guillaume Caumon,
Charles H. Sword, Jr and Jean-Laurent Mallet
Associativity between feature models across domains
S. Subramani,
B. Gurumoorthy
Automated Learning of Model Classifications
Cheuk Yiu Ip, William
C. Regli, Leonard Sieger, Ali Shokoufandeh
Free-Form Deformations via Sketching and Manipulating Scalar
Fields
Jing Hua and Hong Qin
Feature Preserved Volume Simplification
Wei Hong and Ari Kaufman
Cusp Modeling for 5-Axis Surface Machining
Paul J. Gray, Dr. Fathy
Ismail, Dr. Sanjeev Bedi
Automatically Generating Large Urban Environments based on
the Footprint Data of Buildings
R. G. Laycock, A. M. Day
5:00 - 6:30 pm - Break
6:30 pm - Reception
Cruise on Lake Washington
Thursday, June 19th
8:30 - 9:30 am - Keynote Lecture
Session Chair - Chris Hoffmann
Aesthetic Engineering
Carlo Séquin, Berkeley - Bio
Over the last 30 years I have had the opportunity to participate
in the design of solid-state cameras, computer chips, mechanical
assemblies,
two large research buildings, as well as various toys, puzzles,
and
mathematical
models. Most of these efforts were assisted by various computer
programs,
and in most cases, I found this assistance to be insufficient.
These
experiences
have had a strong influence on the course of my research in
computer-aided design tools.
For an even longer time, I also have been interested in abstract
geometrical art
and sculpture. Eight years ago I started to collaborate with Brent
Collins,
a wood sculptor who creates fascinating abstract geometrical forms.
This gave me a chance to merge these to interest domains.
Creating maximally satisfactory forms for mathematical models
or
for geometrical sculptures poses different requirements and constraints
than developing an optimized airplane wing
or designing the most attractive hood shape for a sports car.
In this presentation I will show some recent problem tasks
that have captured my attention and which are currently guiding
my
research
in curve and surface optimization, such as the search for a "beauty
functional" and for efficient approximations
to such a global functional that may
offer
interactive design speeds, or the real-time generation of curves
of
linearly varying
geodesic curvature on smooth surfaces of high genus.
I will show how my students and I are currently attacking these
problems and will also present a wish list and a requirements catalog
for better
CAD tools
for this kind of aesthetic design.
9:30 - 9:45 am - Break
9:45 - 11:00
am - Session 4: Reverse Engineering
Session Chair - Valerio Pascucci
Structuring Point Clouds
Vinicius Mello, Luiz Velho, Gabriel
Taubin
Surface Reconstruction of Freeform Objects from 3D Camera Data
Based on Multiresolution Volumetric Method
S. Azernikov,
A. Miropolsky, A. Fischer
Tight Cocone: A Water-tight Surface Reconstructor
Tamal K. Dey, Samrat Goswami
11:00 - 11:15 am - Break
11:15 am - 12:30 pm - Session 5: Representation Conversions
Session Chair -
Anath Fisher
Three Dimensional Halfspace Constructive Solid Geometry Tree
Construction from Implicit Boundary Representations
Suzanne Fox
Buchele, Richard H. Crawford
Discretization of Functionally Based Heterogeneous Objects
Elena
Kartasheva, Valery Adzhiev, Alexander Pasko, Oleg Fryazinov,
Vladimir Gasilov
Exploiting Self-Similarity in Geometry for Voxel Based Solid
Modeling
Eric Parker, Tushar Udeshi
12:30 - 2:00 pm - Lunch
2:00 - 3:15 pm - Session 6: Approximation & Refinement
Session Chair - Gabriel Taubin
Dynamic
Remeshing and Applications
J. Vorsatz, Ch. Roessl,
H.-P. Seidel
Families of Ambient Isotopic Approximations for Surface Reconstruction
Takis Sakkalis, Thomas J. Peters.
Data Dependent Fairing of Subdivision Surfaces
Ilja Friedel,
Patrick Mullen, Peter Schroeder
3:15 - 3:30 pm - Break
3:30 - 5:00 pm - Emerging Topics Session
Session Chair - Wim Bronsvoort
A Methodology for Representation of Heterogenous Artifacts for
Bio-Medical Applications
Craig Schroeder, William C. Regli, Ali
Shokoufandeh, Wei Sun
Multi-Dexel Volumes
Marc Stautner, Tobias Surmann, Frank Albersmann,
Heinrich Muller, Klaus Weinert
Superquadrics with rational and irrational symmetry
Johan Gielis,
Bert Beirinckx, Edwin Bastiaens
The universal product representation (UPR): an architecture for
CAD
data exchange
Ari Rappoport
Modelling free-form surfaces using a feature-based
approach
J. P. Pernot, B. Falcidieno, F. Giannini, S. Guillet,
J. C. Leon
5:00 - 6:00 pm - SMA Town
Hall Meeting
Session Chair - Jarek Rossignac
6:00 - 7:00 pm - Break
7:00 pm - Banquet
Faculty Club, University of Washington
Friday - 20th
8:30 - 9:30 am - Keynote Lecture
Session Chair - Kunwoo Lee
A Perspective on the Future of Design
Kevin Bowcutt, Boeing - Bio
Hypersonic vehicles are, by necessity, highly integrated flying
machines. They also have inherently high performance and economic
uncertainties. Combined, these characteristics render conventional
practices inadequate for designing hypersonic vehicles. As advancing
technology enables more sophisticated design tools, and computer
speed continues to grow exponentially, systems will be designed
in an ever more integrated fashion to wring the most out of system
performance and economics. Hypersonic vehicles are therefore representative
of future design challenges, and will be used as an example of
future trends in design practice.
Improved methods of system design that account for (and even take
advantage of) the highly integrated nature of hypersonic vehicles
are crucial to their successful development. Some of the advanced
design methods requiring maturation and integration include: a
parametric geometry generation system that provides consistent
high quality geometry data to all analysis disciplines; automated
data transfer between analysis tools; automated execution of high-fidelity
computational analysis tools; multidisciplinary design optimization
(MDO) techniques; probabilistic analysis techniques; and accurate
cost modeling. Also crucial is the coupling of the vehicle design/optimization
system with operations/mission modeling and simulation tools. Such
a link will enable designs to be optimized for system effectiveness
and economics at the highest level. Successful hypersonic vehicle
design is not possible without such improved, integrated methods.
This presentation will focus on this vision of future system design,
and will status some aspects of progress being made toward achieving
this vision.
9:30 - 9:45 am - Break
9:45 - 11:00 am - Session 7: Shape Retrieval and Watermarking
Session Chair -
Robert Joan-Arinyo
Shape Intrinsic Properties for Free-Form Object
Matching
K. H. Ko, T. Maekawa, N. M. Patrikalakis, H. Masuda,
F.-E. Wolter
Scale-Space Representation of 3D Models and Topological Matching
Dmitriy Bespalov, Ali Shokoufandeh, William C. Regli, Wei Sun
3D Zernike descriptors for content based shape retrieval
Marcin
Novotni, Reinhard Klein.
11:00 - 11:15 - Break
11:15 - 12:30 - Session 8: Deformations & Shaping
Session Chair -
Thomas Grandine
t-FFD: Free-Form Deformation by using Triangular Mesh
Kazuya
G. KOBAYASHI, Katsutoshi OOTSUBO
Interactive Shape Design Using Volumetric Implicit PDEs
Haixia
Du, Hong Qin
Free-form Skeleton-driven Mesh Deformations
Shin Yoshizawa,
Alexander G. Belyaev, Hans-Peter Seidel
12:30 - 12:45 - Closing Comments
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