22nd Annual ACM Symposium on Computational Geometry
June 5-7 2006, Sedona, Arizona
Program


Sunday, June 4 (Canyon Patio)

Monday, June 5 (Canyon Ballroom)
9:00 Opening
9:10-10:30 Session 1 (Chair: Nina Amenta)
  Minimum Weight Triangulation is NP-hard
Wolfgang Mulzer and Günter Rote
  The Effect of Corners on the Complexity of Approximate Range Searching
S. Arya, T. Malamatos and D. M. Mount
  Efficient Algorithm for Approximating Maximum Inscribed Sphere in High Dimensional Polytope
Yulai Xie, Jack Snoeyink and Jinhui Xu
  An Optimal-Time Algorithm for Shortest Paths on a Convex Polytope in Three Dimensions
Yevgeny Schreiber and Micha Sharir
10:30-11:00 Multimedia Coffee Break
  Geometry-Based Reasoning for a Large Sensor Network
Sándor P. Fekete and Alexander Kröller
  Projective clustering and its application to surface reconstruction
Amit Mhatre and Piyush Kumar
  A Portable Algorithm Visualization System with Dynamic Camera Positioning for Tracking 3D Geometric Objects
Ming-Hung Tsai, Jyh-DaWei, Jeng-Hung Huang and D. T. Lee
  Streaming Computation of Delaunay Triangulations
Martin Isenburg, Yuanxin (Leo) Liu, Jonathan Shewchuk, and Jack Snoeyink
  Finding a Shortest k-Link Path in a Weighted Subdivision
Ovidiu Daescu, Joseph S.B. Mitchell, Simeon Ntafos, James D. Palmer, and Chee K. Yap
  On Approximating the Smallest Enclosing Bregman Balls
Frank Nielsen and Richard Nock
11:00-12:00 Invited Talk: Mathieu Desbrun
Discrete Differential Forms and Applications to Surface Tiling
12:00-14:00 Lunch
14:00-15:00 Session 2 (Chair: Otfried Cheong)
  Conflict-Free Colorings of Shallow Discs
Noga Alon and Shakhar Smorodinsky
  How to Play a Coloring Game Against a Color-Blind Adversary
Ke Chen
  Colored Intersection Searching via Sparse Rectangular Matrix Multiplication
Haim Kaplan, Micha Sharir and Elad Verbin
15:00-15:20 Coffee Break
15:20-16:20 Session 3 (Chair: Sue Whitesides)
  Locked and Unlocked Chains of Planar Shapes
Robert Connelly, Erik D. Demaine, Martin L. Demaine, Sándor Fekete, Stefan Langerman, Joseph S. B. Mitchell,
Ares Ribó Mor and Günter Rote
  Refolding Planar Polygons
Hayley N. Iben, James F. O'Brien and Erik D. Demaine
  Computing the Frechet Distance Between Simple Polygons in Polynomial Time
Kevin Buchin, Maike Buchin and Carola Wenk
16:20-16:40 Coffee Break
16:40-17:40 Session 4 (Chair: Alper Üngör)
  Ray Shooting and Intersection Searching Amidst Fat Convex Polyhedra in 3-Space
Boris Aronov, Mark de Berg and Chris Gray
  On the ICP Algorithm
Esther Ezra, Micha Sharir and Alon Efrat
  An upper bound on the average size of silhouettes
Marc Glisse
17:45 Business meeting

Tuesday, June 6 (Canyon Ballrooms A and B)
9:00-10:15 Session 5A (Chair: Yusu Wang) 9:00-10:15 Session 5B (Chair: Carola Wenk)
Topology guaranteeing manifold reconstruction using distance
function to noisy data
Frédéric Chazal and André Lieutier
A fast k-means implementation using coresets
Gereon Frahling and Christian Sohler
Vines and Vineyards by Updating Persistence in Linear Time
David Cohen-Steiner, Herbert Edelsbrunner and Dmitriy Morozov
On the worst case complexity of the k-means method
David Arthur and Sergei Vassilvitskii
Persistence-Sensitive Simplification of Functions on 2-Manifolds
Herbert Edelsbrunner, Dmitriy Morozov and Valerio Pascucci
Lower bounds on Locality Sensitive Hashing
Rajeev Motwani, Assaf Naor and Rina Panigrahy
10:15-10:45 Multimedia Coffee Break
  Geometry-Based Reasoning for a Large Sensor Network
Sándor P. Fekete and Alexander Kröller
  Projective clustering and its application to surface reconstruction
Amit Mhatre and Piyush Kumar
  A Portable Algorithm Visualization System with Dynamic Camera Positioning for Tracking 3D Geometric Objects
Ming-Hung Tsai, Jyh-DaWei, Jeng-Hung Huang and D. T. Lee
  Streaming Computation of Delaunay Triangulations
Martin Isenburg, Yuanxin (Leo) Liu, Jonathan Shewchuk, and Jack Snoeyink
  Finding a Shortest k-Link Path in a Weighted Subdivision
Ovidiu Daescu, Joseph S.B. Mitchell, Simeon Ntafos, James D. Palmer, and Chee K. Yap
  On Approximating the Smallest Enclosing Bregman Balls
Frank Nielsen and Richard Nock
10:45-12:00 Session 6A (Chair: Matt Dickerson) 10:45-12:00 Session 6B (Chair: Ken Clarkson)
Simple and Semi-Dynamic Structures for Cache-Oblivious Planar
Orthogonal Range Searching
Lars Arge and Norbert Zeh
Embedding Ultrametrics Into Low-Dimensional Spaces
Mihai Badoiu, Julia Chuzhoy, Piotr Indyk and Anastasios Sidiropoulos
I/O-Efficient Batched Union-Find and Its Applications to Terrain
Analysis
Pankaj K. Agarwal, Lars Arge and Ke Yi
Plane Embeddings of Planar Graph Metrics
MohammadHossein Bateni, Erik D. Demaine, Mohammad Taghi
Hajiaghayi and Mohammad Moharrami
On Realistic Terrains
Esther Moet, Marc van Kreveld and A. Frank van der Stappen
Volume distortion for subsets of Euclidean spaces
James R. Lee
12:00-13:30 Lunch
13:30-14:45 Session 7A (Chair: Sylvain Pion) 13:30-14:45 Session 7B (Chair: Dominique Attali)
Complete Subdivision Algorithms, I: Intersection of Bezier Curves
Chee K. Yap
The Orienteering Problem in the Plane Revisited
Ke Chen and Sariel Har-Peled
The predicates for the Voronoi diagram of ellipses
Ioannis Z. Emiris, George M. Tzoumas and Elias P. Tsigaridas
Degenerate Crossing Numbers
Janos Pach and Geza Toth
An approximate arrangement algorithm for semi-algebraic curves
Victor Milenkovic and Elisha Sacks
On the maximum number of edges in topological graphs with no four
pairwise crossing edges
Eyal Ackerman
14:45-15:15 Coffee Break
15:15-16:30 Session 8A (Chair: Sue Whitesides) 15:15-16:30 Session 8B (Chair: Alper Üngör)
The Density of Iterated Crossing Points and a Gap Result for
Triangulations of Finite Point Sets
Rolf Klein and Martin Kutz
Engineering a Compact Parallel Delaunay Algorithm in 3D
Daniel K. Blandford, Guy E. Blelloch and Clemens Kadow
Random Triangulations of Point Sets
Micha Sharir and Emo Welzl
Minimum-Cost Load-Balancing Partitions
Boris Aronov, Paz Carmi and Matthew J. Katz
Pre-Triangulations and Liftable Complexes
Oswin Aichholzer, Franz Aurenhammer and Thomas Hackl
Optimal Succinct Representations of Planar Maps
Luca Castelli Aleardi, Olivier Devillers and Gilles Schaeffer
17:00 Excursion / Conference Dinner

Wednesday, June 7 (Canyon Ballroom)
9:00-10:20 Session 9 (Chair: Dominique Attali)
 A Sampling Theory for Compacts in Euclidean Space
Frédéric Chazal, David Cohen-Steiner and André Lieutier
 Medial Axis Approximation and Unstable Flow Complex
Joachim Giesen, Edgar A. Ramos and Bardia Sadri
 Provably Good Sampling and Meshing of Lipschitz Surfaces
Jean-Daniel Boissonnat and Steve Oudot
 Sliver Removal by Lattice Refinement
François Labelle
 
10:20-11:40Coffee Break
10:40-12:00 Session 10 (Chair: Sylvain Pion)
 Improved Output-Sensitive Snap Rounding
John Hershberger
 Iterated Snap Rounding with Bounded Drift
Eli Packer
 Hole Detection or: 'How much Geometry hides in Connectivity?'
Stefan Funke and Christian Klein
 Online Geometric Reconstruction
Bernard Chazelle and Seshadhri Comandur
12:00-14:00Lunch
14:00-15:00 Session 11 (Chair: Ken Clarkson)
  On Overlays and Minimization Diagrams
Vladlen Koltun and Micha Sharir
  On How to Get Close to the Median Shape
Sariel Har-Peled
  Envelope surfaces
Nico Kruithof and Gert Vegter
15:00-15:20Coffee Break
15:20-16:20 Session 12 (Chair: Alon Efrat)
  Splitting (Complicated) Surfaces Is Hard
Erin Chambers, Éric Colin de Verdière, Jeff Erickson, Francis Lazarus and Kim Whittlesey
  Computing Shortest Non-Contractible Cycles on Surfaces of Bounded Genus in Almost Linear Time
Martin Kutz
  Tight Bounds for Connecting Sites Across Barriers
David Krumme, Eynat Rafalin, Diane L. Souvaine and Csaba D. Tóth
16:20-16:40Coffee Break
16:40-17:40 Session 13 (Chair: Yusu Wang)
  Minimum-Cost Coverage of Point Sets by Disks
Helmut Alt, Esther M. Arkin, Herv'e Brönnimann, Jeff Erickson, Sándor Fekete, Christian Knauer, Jonathan Lenchner,
Joseph S. B. Mitchell and Kim Whittlesey
  Algorithms for Two-Box Covering
Esther M. Arkin, Gill Barequet and Joseph S. B. Mitchell
  Exact Computation of Protein Structure Similarity
L. Paul Chew