DIMACS Workshop on Computational Geometry (The 12th annual Fall workshop on Computational Geometry) November 14 - 15, 2002 DIMACS Center, Rutgers University, Piscataway, NJ Organizers: Joseph S. B. Mitchell, University at Stony Brook, jsbm at ams.sunysb.edu Program Committee: Herve Bronnimann, Polytechnic University Erik Demaine, MIT Steven Fortune, Bell Laboratories Joseph S. B. Mitchell, University at Stony Brook Ileana Streinu, Smith College Suresh Venkatasubramanian, AT&T Presented under the auspices of the Special Focus on Computational Geometry and Applications. **************************************************************** We are pleased to announce the twelfth in a series of annual fall workshops on Computational Geometry. This workshop series, founded initially under the sponsorship of the Mathematical Sciences Institute (MSI) at Stony Brook (with funding from the U. S. Army Research Office), has continued during 1996-1999 under the sponsorship of the Center for Geometric Computing, a collaborative center of Brown, Duke, and Johns Hopkins Universities, also funded by the U.S. Army Research Office. In 2000, the workshop returned to the campus of the University at Stony Brook. In 2001, it was held at Polytechnic University in Brooklyn. This year, as part of the DIMACS Special Focus on Computational Geometry and Applications, the workshop is being hosted and sponsored by DIMACS. Scope and Format: The aim of this workshop is to bring together students and researchers from academia and industry, to stimulate collaboration on problems of common interest arising in geometric computations. Topics to be covered include, but are not limited to: Algorithmic methods in geometry Geometric data structures Implementation issues Robustness Computer graphics Solid modeling Geographic information systems Applications to computational biology and chemistry Computational metrology Graph drawing Experimental studies Computer vision Robotics Computer-aided design Mesh generation Manufacturing applications of geometry I/O-scalable geometric algorithms Animation of geometric algorithms Following the tradition of the previous workshops on Computational Geometry, the format of the workshop will be informal, extending over 2 days, with several breaks scheduled for discussions. There will also be an Open Problem Session in order to promote a free exchange of questions and research challenges. **************************************************************** Invited Speakers: Timothy Chan, Waterloo, Low-Dimensional Linear Programming with Violations Piotr Indyk, MIT, Approximate Algorithms for High-Dimensional Geometric Problems Lydia Kavraki, Rice, Modeling the Conformational Flexibility of Proteins Regina Liu, Rutgers, Data Depth in Multivariate Data Analysis: Usefulness and Challenges **************************************************************** Tentative Workshop Program: Thursday, November 14 8:00-8:50 Continental Breakfast 8:50-9:00 Opening Remarks 9:00-10:00 Contributed talks: The Path of a Pseudo-Triangulation Oswin Aichholzer, Ileana Streinu, and Bettina Speckmann An Energy-Driven Approach to Linkage Unfolding Jason H. Cantarella, Erik D. Demaine, Hayley N. Iben, and James F. O'Brien Proximate Planar Point Location John Iacono and Stefan Langerman. Exact Algorithms for Computing the Location Depth and the $k$-th Depth Regions Based on Parallel Arrangement Constructions Komei Fukuda and Vera Rosta 10:00-10:30 Break 10:30-11:20 Invited Talk Regina Liu (Rutgers) Data Depth in Multivariate Data Analysis: Usefulness and Challenges 11:20-11:30 Minibreak 11:30-12:30 Contributed talks: Several Geometric Tiling and Packing Problem With Applications To Nonoverlapping local alignments, DNA microarray designs and Homology Searches Bhaskar DasGupta Art Gallery Theorems for Guarded Guards T. S. Michael and Val Pinciu Matching Planar Maps Helmut Alt, Alon Efrat, G\"unter Rote, and Carola Wenk Approximation Algorithms for Aligning Points Sergio Cabello and Marc van Kreveld 12:30-2:00 Lunch 2:00-2:50 Invited Talk: Timothy Chan (Waterloo): Low-Dimensional Linear Programming with Violations 2:50-3:00 Minibreak 3:00-4:00 Contributed talks: The Rectilinear Minimum Bends Path Problem in Three Dimensions David P. Wagner, Robert Scot Drysdale, and Clifford Stein Fault-Tolerant Geometric Spanners Artur Czumaj and Hairong Zhao Computing Homotopic Shortest Paths Efficiently Alon Efrat, Stephen Kobourov, and Anna Lubiw Variants on Alternating Segment Paths Csaba D. T\'oth 4:00-4:30 Break 4:30-5:30 Contributed talks: Optimal Motion Strategies to Track and Capture a Predictable Target Alon Efrat, H\'ector H. Gonzalez-Banos, Stephen G. Kobourov, and Lingeshwaran Palaniappan Online Dispersion Algorithms for Robot Swarms Esther M. Arkin, Michael A. Bender, S\'andor P. Fekete, Tien-Ruey Hsiang, Nenad Jovanovic, Joseph S. B. Mitchell, and Marcelo O. Sztainberg New Approximation Results for the Maximum Scatter TSP Yi-Jen Chiang Hide and Seek for Robots Tien-Ruey Hsiang, Joseph S. B. Mitchell, and Marcelo O. Sztainberg 5:30-5:40 Minibreak 5:40-6:30 Open Problem Session 6:30 Dinner Friday, November 15 8:00-9:00 Continental Breakfast 9:00-10:00 Contributed talks: Constructing Hamiltonian Triangle Strips on Quadrilateral Meshes Gabriel Taubin Interpolation over Light Fields with Applications in Computer Graphics F. Betul Atalay and David M. Mount Visible Zone Maintenance for Real-Time Occlusion Culling Olaf Hall-Holt Multi-way Space Partitioning Trees Christian A. Duncan 10:00-10:30 Break 10:30-11:20 Invited Talk: Lydia Kavraki (Rice): Modeling the Conformational Flexibility of Proteins 11:20-11:30 Minibreak 11:30-12:30 Contributed talks: Three Observations on Geometric Permutations Boris Aronov and Shakhar Smorodinsky Cost Optimal Trees for Ray Shooting Herv\'e Br\"onnimann and Marc Glisse The Min-Max Voronoi Diagram of Polygons and Applications in VLSI Manufacturing Evanthia Papadopoulou and D.T. Lee Optimal Core-Sets for Balls Mihai B\u{a}doiu and Kenneth L. Clarkson 12:30-2:00 Lunch 2:00-2:50 Invited Talk: Piotr Indyk (MIT): Approximate Algorithms for High-Dimensional Geometric Problems 2:50-3:00 Minibreak 3:00-4:00 Contributed talks: The Foldings of a Square to Convex Polyhedra Rebecca Alexander, Heather Dyson, Joseph O'Rourke Tetris is Hard, Even to Approximate Erik Demaine, Susan Hohenberger, and David Liben-Nowell Towards the Visualization of Overlapping Sets Xavier Boyen, Liadan O'Callaghan, and Nina Mishra Can Polynomiography be Useful in Computational Geometry? Bahman Kalantari 4:00-4:30 Break 4:30-5:15 Contributed talks: An Algorithm Oriented Mesh Database (AOMD) Application: Decimation B. Kaan Karamete Hand Recognition Using Geometric Classifiers Yaroslav Bulatov, Sachin Jambawalikar, Piyush Kumar, and Saurabh Sethia Sufficiently Fat Polyhedra are not 2-Castable David Bremner and Alexander Golynski 5:15-5:30 Minibreak 5:30-6:30 Open Problem Session **************************************************************** Registration fees: There are no registration fees for this event. **************************************************************** Information on participation, registration, accommodations, and travel can be found at: http://dimacs.rutgers.edu/Workshops/CompGeom/ **PLEASE BE SURE TO PRE-REGISTER EARLY**