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COMGEO
2008
ACM
13 years 4 months ago
Encompassing colored planar straight line graphs
Consider a planar straight line graph (PSLG), G, with k connected components, k 2. We show that if no component is a singleton, we can always find a vertex in one component that s...
Ferran Hurtado, Mikio Kano, David Rappaport, Csaba...
COMGEO
2008
ACM
13 years 4 months ago
Decomposing a simple polygon into pseudo-triangles and convex polygons
In this paper we consider the problem of decomposing a simple polygon into subpolygons that exclusively use vertices of the given polygon. We allow two types of subpolygons: pseud...
Stefan Gerdjikov, Alexander Wolff
COMGEO
2008
ACM
13 years 4 months ago
Visibility maps of segments and triangles in 3D
Esther Moet, Christian Knauer, Marc J. van Kreveld
COMGEO
2008
ACM
13 years 5 months ago
Optimal location of transportation devices
We consider algorithms for finding the optimal location of a simple transportation device, that we call a moving walkway, consisting of a pair of points in the plane between which ...
Jean Cardinal, Sébastien Collette, Ferran H...
COMGEO
2008
ACM
13 years 5 months ago
Approximation of an open polygonal curve with a minimum number of circular arcs and biarcs
We present an algorithm for approximating a given open polygonal curve with a minimum number of circular arcs. In computer-aided manufacturing environments, the paths of cutting t...
Robert L. Scot Drysdale, Günter Rote, Astrid ...
COMGEO
2008
ACM
13 years 5 months ago
I/O-efficient algorithms for computing planar geometric spanners
Anil Maheshwari, Michiel H. M. Smid, Norbert Zeh
COMGEO
2008
ACM
13 years 5 months ago
Optimal core-sets for balls
Given a set of points P Rd and value > 0, an -core-set S P has the property that the smallest ball containing S is within of the smallest ball containing P. This paper shows ...
Mihai Badoiu, Kenneth L. Clarkson
COMGEO
2008
ACM
13 years 5 months ago
Covering point sets with two disjoint disks or squares
We study the following problem: Given a set of red points and a set of blue points on the plane, find two unit disks CR and CB with disjoint interiors such that the number of red ...
Sergio Cabello, José Miguel Díaz-B&a...
COMGEO
2008
ACM
13 years 5 months ago
Augmenting the connectivity of geometric graphs
Let G be a connected plane geometric graph with n vertices. In this paper, we study bounds on the number of edges required to be added to G to obtain 2-vertex or 2-edge connected ...
Manuel Abellanas, Alfredo García Olaverri, ...
COMGEO
2008
ACM
13 years 5 months ago
Recursive geometry of the flow complex and topology of the flow complex filtration
The flow complex is a geometric structure, similar to the Delaunay tessellation, to organize a set of (weighted) points in Rk. Flow shapes are topological spaces corresponding to ...
Kevin Buchin, Tamal K. Dey, Joachim Giesen, Matthi...