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CCCG
1997
13 years 5 months ago
On the number of internal and external visibility edges of polygons
In this paper we prove that for any simple polygon P with n vertices, the sum of the number of strictly internal edges and the number of strictly external visibility edges of P is...
Jorge Urrutia
CCCG
1997
13 years 5 months ago
Label placement by maximum independent set in rectangles
Motivated by the problem of labeling maps, we investigate the problem of computing a large non-intersecting subset in a set of n rectangles in the plane. Our results are as follow...
Pankaj K. Agarwal, Marc J. van Kreveld, Subhash Su...
CCCG
1998
13 years 5 months ago
A modified longest side bisection triangulation
Fast and efficient exploration of large terrains in a virtual reality manner requires different levels of detail to speedup processing of terrain parts in background. Thus, the tr...
Christoph Stamm, Stephan Eidenbenz, Renato Pajarol...
CCCG
1998
13 years 5 months ago
Proximity drawings of binary trees in polynomial area
In this paper, we study weak {proximity drawings. All known algorithms that compute (weak) proximity drawings produce representations whose area increases exponentiallywith the nu...
Paolo Penna, Paola Vocca
CCCG
1998
13 years 5 months ago
On point covers of c-oriented polygons
Let S be any family of n c-oriented polygons of the two-dimensional Euclidean plane E2 , i.e., bounded intersection of halfplanes whose normal directions of edges belong to a
Frank Nielsen
CCCG
1998
13 years 5 months ago
Quantile approximation for robust statistical estimation
Given a set P of n points in Rd, a fundamental problem in computational geometry is concerned with finding the smallest shape of some type that encloses all the points of P. Well-...
David M. Mount, Nathan S. Netanyahu, Christine D. ...
CCCG
1998
13 years 5 months ago
On measuring areas of polygons
Jurek Czyzowicz, F. Contreras-Alcalá, Jorge...
CCCG
1998
13 years 5 months ago
Illuminating triangles and quadrilaterals with vertex floodlights
We show that three /6 vertex floodlights suffice to illuminate any triangle, and we prove that any quadrilateral can be illuminated by three /4 vertex floodlights.
Felipe Contreras, Jurek Czyzowicz, Nicolas Fraiji,...
CCCG
1998
13 years 5 months ago
Finding specified sections of arrangements: 2d results
Prosenjit Bose, Ferran Hurtado, Henk Meijer, Sunee...