Suneeta Ramaswami
322 Business and Science Building
Department of Computer Science
Rutgers University
Camden, NJ 08102
Email:
rsuneeta@camden.rutgers.edu
Publications (Journals Conferences)
Quadrilateral meshing code
Research support
Research-related links
Coauthors
Research Interests
Computational geometry and the design, analysis and
implementation of algorithms for geometric problems that arise in
varied applications such as mesh-generation, robotics, computational
statistics, computational biology, computer-aided design and
manufacturing (CAD/CAM), and computer graphics.
Publications
Many of the following papers are
copyrighted, which means they can be distributed only for
noncommercial purposes, and at no charge.
Most electronically available papers are in compressed
postscript or in pdf form.
Journals:
- M. Damian, R. Flatland, J. O'Rourke, and S. Ramaswami, Connecting Polygonizations via Stretches and
Twangs, Theory of Computing Systems, ISSN 1432-4350,
Springer New York, 2009.
- G. Aloupis, S. Collette, M. Damian, E. Demaine, R. Flatland,
S. Langerman, J. O'Rourke, S. Ramaswami, V. Sacristan,
S. Wuhrer, Linear Reconfiguration of
Cube-Style Modular Robots, Computational Geometry: Theory and
Applications, 42, 2009, pp. 652-663.
- J. Colannino, M. Damian, F. Hurtado, S. Langerman, H. Meijer,
S. Ramaswami, D. Souvaine and G. Toussaint. "Efficient
Many-to-Many Point Matching in One Dimension". Graphs and
Combinatorics, 23, 2007, pp. 169-178.
- J. Colannino, M. Damian, F. Hurtado, J. Iacono, H. Meijer,
S. Ramaswami, and G. Toussaint, An O(n log
n)-Time Algorithm for the Restriction Scaffold Assignment Problem,
Journal of Computational Biology, 13(4), 2006.
- S. Ramaswami, M. Siqueira, T. Sundaram, J. Gallier, and
J. Gee, "Constrained Quadrilateral Meshes of
Bounded Size", International Journal of Computational Geometry
and Applications, 15(1), 2005, pp. 55-98. ( Invited paper in
special issue devoted to selected papers from IMR 2003)
The algorithm in this paper has been implemented by Marcelo
Siqueira. Downloadable code can be found
here.
- O. Aichholzer, D. Bremner, E. D. Demaine, F. Hurtado,
E. Kranakis, H. Krasser, S. Ramaswami, S. Sethia, and
J. Urrutia, "Games on Triangulations",
Theoretical Computer Science (special issue on
"Game Theory Meets Theoretical Computer Science"), 343(1-2), 2005,
pp. 42-71.
- D. Bremner, F. Hurtado,
S. Ramaswami, and V. Sacristan, "Small Strictly Convex Quadrilateral Meshes
of Point Sets", Algorithmica, 38(2), 2003,
pp. 317-339. ( Invited paper in special issue devoted to selected
papers from ISAAC 2001)
- K. Miller, S. Ramaswami, P. Rousseeuw, T. Sellarès,
D. Souvaine, I. Streinu, and A. Struyf, "Efficient computation of depth contours by
methods of computational geometry", Statistics and
Computing, 13(2), 2003, pp. 153-162.
- F. Gomez, S. Ramaswami, and G. Toussaint,
"Computing General Position Views of Data in
Three Dimensions", Journal of Visual Communication and Image
Representation, 13(4), 2002, pp. 401-424.
- P. Bose, S. Ramaswami, G. Toussaint, and
A. Turki, "Experimental Results on
Quadrangulations of Sets of Fixed Points", Computer Aided
Geometric Design, 19(7), 2002, pp. 533-552.
- O. Aichholzer, C. Cortes, V. Dujmovic, E. Demaine, J. Erickson,
H. Meijer, M. Overmars, B. Palop, S. Ramaswami, and
G. Toussaint, "Flipturning Polygons",
Discrete and Computational Geometry, 28, 2002, pp. 231-253.
- F. Gomez, F. Hurtado, S. Ramaswami, V. Sacristan, and
G. Toussaint, "Implicit Convex Polygons",
Journal of Mathematical Modelling and Algorithms, Vol. 1,
2002, pp. 57-85.
- P. Bose, F. Hurtado, H. Meijer, S. Ramaswami,
D. Rappaport, V. Sacristan, T. Shermer and G. Toussaint, "Computing Sections of Arrangements: 2D
results", Journal of Mathematical Modelling and
Algorithms, Vol. 1, 2002, pp. 3-16.
- Sanguthevar Rajasekaran and Suneeta Ramaswami, "Optimal Parallel Randomized Algorithms for the
Voronoi Diagram of Line Segments in the Plane and Related Problems",
Algorithmica, Vol. 33, 2002, pp. 436-460.
- P. Berman, B. DasGupta, S. Muthukrishnan, and S. Ramaswami,
"Improved Approximation Algorithms for
Rectangle Tiling and Packing", Journal of Algorithms,
Vol. 41, 2001, pp. 443-470.
- Mark de Berg, Prosenjit Bose, David Bremner, Suneeta
Ramaswami and Gordon Wilfong, "Computing
Constrained Minimum-Width Annuli of Point Sets",
Computer-Aided Design (special issue on Computational
Geometry and Computer-Aided Design & Manufacturing), Elsevier
Press, Vol. 30, No. 4, 1998, pp. 267-275.
- Suneeta Ramaswami, Pedro Ramos and Godfried Toussaint, "Converting Triangulations to
Quadrangulations", Computational Geometry: Theory and
Applications, Elsevier Press, Vol. 9, 1998, pp. 257-276.
- Sanguthevar Rajasekaran and Suneeta Ramaswami, "Optimal Mesh Algorithms for the Voronoi Diagram of
Line Segments and Motion Planning in the Plane", Journal of
Parallel and Distributed Computing, Vol. 26, 1995, pp. 99-115.
Journals (under submission):
- B. Atalay, S. Ramaswami, and D. Xu, Quadrilateral Meshes with Bounded Minimum
Angle, submitted May 2009.
- G. Aloupis, S. Collette, M. Damian, E. Demaine, D. El-Khechen,
R. Flatland, S. Langerman, J. O'Rourke, V. Pinciu,
S. Ramaswami, V. Sacristan, and S. Wuhrer, Efficient Constant-Velocity
Reconfiguration of Crystalline Robots, submitted August 2009.
Conferences:
- S. Hine, F. B. Atalay, D. Xu, and S. Ramaswami, Quadrilateral Meshes with Bounded Minimum
Angle. (Video and short paper), to be presented at the
25th Annual ACM Symposium on Computational Geometry
(SoCG'09), June 2009, Aarhus, Denmark.
- G. Aloupis, S. Collette, M. Damian, E. Demaine, D. El-Khechen,
R. Flatland, S. Langerman, J. O'Rourke, V. Pinciu,
S. Ramaswami, V. Sacristan, and S. Wuhrer, Realistic Reconfiguration of Crystalline
(and Telecube) Robots, in Proceedings of the 8th International
Workshop on the Algorithmic Foundations of Robotics (WAFR),
December 2008.
- B. Atalay, S. Ramaswami, and D. Xu, Quadrilateral Meshes with Bounded Minimum
Angle, Proceedings of the 17th International Meshing
Roundtable (IMR), October 2008, pp. 73-91.
- M. Damian, R. Flatland, J. O'Rourke, and S. Ramaswami, Connecting Polygonizations via Stretches and
Twangs, Proceedings of the 25th International Symposium on
the Theoretical Aspects of Computer Science (STACS), February
2008, pp. 217-228.
A two-page version also appears in the
Abstracts of the 17th Fall Workshop on Computational and
Combinatorial Geometry, November 2007.
- G. Aloupis, S. Collette, M. Damian, E. Demaine, R. Flatland,
S. Langerman, J. O'Rourke, S. Ramaswami, V. Sacristan,
S. Wuhrer, Linear Reconfiguration of
Cube-Style Modular Robots, Proceedings of the 18th
International Symposium on Algorithms and Computation
(ISAAC), LNCS 4835, 2007, pp. 208-219.
- M. Damian, R. Flatland, J. O'Rourke, and S. Ramaswami, A New Lower Bound on Guard Placement for
Wireless Localization, in Abstracts of the 17th Fall Workshop
on Computational and Combinatorial Geometry, November 2007.
- M. Damian, E. D. Demaine, M. Demaine, V. Dujmovic, D. El-Khechen,
R. Flatland, J. Iacono, S. Langerman, H. Meijer, S. Ramaswami,
D. L. Souvaine, P. Taslakian, G. T. Toussaint, Curves in the Sand: Algorithmic Drawing,
in Proceedings of the 18th Canadian Conference on
Computational Geometry, August 2006, pp. 11-15.
- S. Ramaswami, M. Siqueira, T. Sundaram, J. Gallier, and
J. Gee, "A New Algorithm for Generating
Quadrilateral Meshes and Its Application to FE-Based Image
Registration", in Proceedings of the 12th
International Meshing Roundtable, Santa Fe, New Mexico, September,
2003.
- M. Siqueira, T. Sundaram, S. Ramaswami, J. Gallier, and
J. Gee, "Quadrilateral Meshes for the
Registration of Human Brain Images", in Abstracts of the DIMACS
Workshop on Medical Applications in Computational Geometry, New
Brunswick, NJ, April 2-4, 2003.
- O. Aichholzer, D. Bremner, E. D. Demaine, F. Hurtado,
E. Kranakis, H. Krasser, S. Ramaswami, S. Sethia, and
J. Urrutia, "Geometric Games on
Triangulations", in Abstracts of the 19th European Workshop on
Computational Geometry, Bonn, Germany, March 24-26, 2003, pp. 89-92.
- O. Aichholzer, D. Bremner, E. D. Demaine,
F. Hurtado, E. Kranakis, H. Krasser, S. Ramaswami, S. Sethia,
and J. Urrutia, "Playing with
Triangulations", in Proc. Japan Conference on Discrete and
Computational Geometry, Tokyo, Japan, December 2002.
Also appears in Lecture Notes in Computer Science, Springer-Verlag,
2003.
- D. Bremner, F. Hurtado,
S. Ramaswami, and V. Sacristan, "Small
Convex Quadrangulations of Point Sets", Proc. International
Symposium on Algorithms and Computation (ISAAC), Christchurch, New
Zealand. Lecture Notes in Computer Science 2223, Springer-Verlag,
2001, pp. 623-635.
- V. Brumberg, S. Ramaswami, and D. Souvaine, "Experimental Results on Upper Bounds for Vertex
Pi-Lights", Abstracts of the 11th Fall Workshop on Computational
Geometry, Brooklyn, NY, November 2001.
- K. Miller, S. Ramaswami,
P. J. Rousseeuw, T. Sellares, D. Souvaine, I. Streinu, and A. Struyf,
"Fast implementation of depth contours using
topological sweep", Proc. 12th Annual SIAM Symp. Discrete
Algorithms (SODA), Washington DC, January 2001, pp. 690-699.
- P. Berman, B. DasGupta, S. Muthukrishnan,
and S. Ramaswami, "Improved approximation
algorithms for rectangle tiling and packing", Proc. 12th Annual SIAM
Symp. Discrete Algorithms (SODA), Washington DC, January 2001,
pp. 427-436.
- O. Aichholzer, C. Cortes, V. Dujmovic,
E. Demaine, J. Erickson, H. Meijer, M. Overmars, B. Palop,
S. Ramaswami, and G. Toussaint, "Flipturning Polygons", Proc. Japan
Conference on Discrete and Computational Geometry,
November, 2000.
- P. Bose, F. Hurtado, H. Meijer,
S. Ramaswami, D. Rappaport, V. Sacristan, T. Shermer and
G. Toussaint, "Computing Sections of
Arrangements: 2D results", Proc. Tenth Canadian Conference on
Computational Geometry, Montréal, Canada, Aug 10-12, 1998,
pp. 20-21. Longer version at
http://cgm.cs.mcgill.ca/cccg98/proceedings/.
- S. Ramaswami, "Parallel Randomized
Techniques for Some Fundamental Geometric Problems: A Survey",
Workshop on Randomized Parallel Computing, IPPS and SPDP'98 Joint
Conference, Orlando, Florida. Lecture Notes in Computer
Science 1388, Springer-Verlag, 1998. (invited paper)
- F. Gomez, F. Hurtado, S.
Ramaswami, V. Sacristan and G. Toussaint, "Implicit Convex Polygons", Abstracts of the
Fourteenth European Workshop on Computational Geometry, Barcelona,
Spain, 1998, pp. 83-85.
- M. de Berg, P. Bose, D. Bremner, S. Ramaswami and
G. Wilfong, "Computing Constrained
Minimum-Width Annuli of Point Sets", Proc. Fifth Annual Workshop
on Algorithms and Data Structures (WADS'97), Halifax, Canada. Lecture
Notes in Computer Science 1272, Springer-Verlag, 1997, pp. 392-401.
- F. Gomez, S. Ramaswami and G. Toussaint, "On Removing Non-degeneracy Assumptions in
Computational Geometry", Proc. Third Italian Conference on
Algorithms and Complexity, Rome, Italy. Lecture Notes in Computer
Science 1203, Springer-Verlag, 1997, pp. 52-63.
- P. Bose, S. Ramaswami, G. Toussaint
and A. Turki, "Experimental Comparison of
Quadrangulation Algorithms for Sets of Points", Abstracts of the
Twelfth European Workshop on Computational Geometry, Münster,
Germany, 1996, pp. 39-40.
- S. Ramaswami, P. Ramos and G. Toussaint, "Converting Triangulations to
Quadrangulations", Proc. Seventh Canadian Conference on
Computational Geometry, Quebec City, Quebec, 1995, pp. 297-302.
- S. Rajasekaran and S. Ramaswami, "Optimal Parallel Randomized Algorithms for the
Voronoi Diagram of Line Segments in the Plane and Related
Problems", Proc. Tenth Annual ACM Symposium on Computational
Geometry, Stony Brook, New York, 1994, pp. 57-66.
- S. Rajasekaran and S. Ramaswami, "Optimal Mesh Algorithms
for the Voronoi Diagram of Line Segments, Visibility Graphs and Motion
Planning in the Plane", Proc. 30th Annual Allerton Conference on
Communication, Control and Computing, Monticello, Illinois, 1992,
pp. 382-391.
Other Abstracts:
- F. Gomez, S. Ramaswami, and G. Toussaint, "On Removing
Degeneracies in Computational Geometry", Abstracts of the 914th
meeting of the American Mathematical Society, Lawrenceville, New
Jersey, 1996. Also in Abstracts of the Cuba Conference on Algorithms,
November, 2000.
Book Chapter:
Coauthors on my research
papers
Oswin
Aichholzer,
Greg Aloupis,
Mark de Berg,
Piotr Berman,
Prosenjit Bose,
David Bremner,
Carmen Cortes,
Justin Colannino,
Mirela Damian,
Bhaskar DasGupta,
Erik Demaine,
Martin Demaine,
Vida Dujmovic,
Dania El-Khechen,
Jeff Erickson,
Robin Flatland,
Jean Gallier,
Jim Gee,
Francisco Gomez,
Ferran Hurtado,
John Iacono,
Evangelos Kranakis,
Hannes Krasser,
Stefan Langerman,
Henk Meijer,
Kim Miller,
S.Muthukrishnan,
Mark Overmars,
Joe O'Rourke,
Belen Palop,
Sanguthevar Rajasekaran,
Pedro Ramos,
David Rappaport,
Peter Rousseeuw,
Vera Sacristan,
Toni Sellarès,
Saurabh Sethia,
Tom Shermer,
Marcelo Siqueira,
Diane Souvaine,
Ileana Streinu,
Anja Struyf,
Tessa Sundaram,
Perouz Taslakian,
Godfried Toussaint,
Alain Turki,
Jorge Urrutia,
Gordon
Wilfong, Stephanie Wuhrer.
Research-related Links
Some web pages with lots of information related to computational
geometry and its applications:
- Geometry in Action
: a superb compendium of the applications of geometry in the
real-world. Explore also the geometry
junkyard, which defies description. These pages are maintained by
Prof. David Eppstein at UC-Irvine.
- The Center for Geometric
Computing .
- The
computational geometry software library , maintained by Nina Amenta.
- A nice collection of geometric
animation on the web can be found on Godfried Toussaint's web
page .
-
The computational
geometry bibliography , a search tool to look up references to
publications in computational geometry.
- The
computational geometry web page , maintained by Jeff
Erickson. (This has not been maintained for a while, but still has
some useful information.)
- The Geometry Center ,
which has, among other things, links to downloadable software, as well
as interactive Java applications. The center itself does not exist any
more, but the software repository is useful.
Research support
My research is currently supported by the following grants:
Past support by
- NSF CCR-0204293.
Amount: $134,789 (2002-2007).
- Lindback Minority Junior Faculty Award. Amount: $15,000 (2003-2004).
- a Rutgers University ISATC (Information Sciences and Technology
Council) pilot project grant. Amount: $24,700 (2001-2002).
- Research Council grants (1999-2000, 2000-2001), and
- Rutgers University start-up funds (1997-1999).