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IPCO
2007
114views Optimization» more  IPCO 2007»
14 years 26 days ago
Distinct Triangle Areas in a Planar Point Set
Erd˝os, Purdy, and Straus conjectured that the number of distinct (nonzero) areas of the triangles determined by n noncollinear points in the plane is at least n−1 2 , which is...
Adrian Dumitrescu, Csaba D. Tóth
CCCG
2010
14 years 27 days ago
Minimum enclosing area triangle with a fixed angle
Given a set S of n points in the plane and a fixed angle 0 < < , we show how to find all triangles of minimum area with angle that enclose S in O(n log n) time.
Prosenjit Bose, Jean-Lou De Carufel
ESA
2008
Springer
97views Algorithms» more  ESA 2008»
14 years 1 months ago
The Complexity of Bisectors and Voronoi Diagrams on Realistic Terrains
We prove tight bounds on the complexity of bisectors and Voronoi diagrams on so-called realistic terrains, under the geodesic distance. In particular, if n denotes the number of tr...
Boris Aronov, Mark de Berg, Shripad Thite
COMPGEOM
2008
ACM
14 years 1 months ago
Extremal problems on triangle areas in two and three dimensions
The study of extremal problems on triangle areas was initiated in a series of papers by Erdos and Purdy in the early 1970s. In this paper we present new results on such problems, ...
Adrian Dumitrescu, Micha Sharir, Csaba D. Tó...
VR
1993
IEEE
103views Virtual Reality» more  VR 1993»
14 years 3 months ago
Data Complexity for Virtual Reality: Where do all the Triangles Go?
Screen space rendering statistics were gathered from 150 3D objects, each modeled by between 2K and 40K triangles. While there is wide variance by individual object, the overall t...
Michael F. Deering
COMPGEOM
1996
ACM
14 years 3 months ago
Flipping Edges in Triangulations
A triangulation of a point set Pn is a partitioning of the convex hull Conv(Pn) into a set of triangles with disjoint interiors such that the vertices of these triangles are in Pn...
Ferran Hurtado, Marc Noy, Jorge Urrutia
WG
1998
Springer
14 years 3 months ago
Triangles in Euclidean Arrangements
The number of triangles in arrangements of lines and pseudolines has been object of some research. Most results, however, concern arrangements in the projective plane. In this arti...
Stefan Felsner, Klaus Kriegel
CHI
1998
ACM
14 years 3 months ago
Triangles: Tangible Interface for Manipulation and Exploration of Digital Information Topography
This paper presents a system for interacting with digital information, called Triangles. The Triangles system is a physical/digital construction kit, which allows users to use two...
Matthew G. Gorbet, Maggie Orth, Hiroshi Ishii
GMP
2000
IEEE
117views Solid Modeling» more  GMP 2000»
14 years 3 months ago
Distance Computation between Non-Convex Polyhedra at Short Range Based on Discrete Voronoi Regions
An algorithm for calculating the minimum distance between non-convex polyhedra is described. A polyhedron is represented by a set of triangles. In calculating the distance between...
Katsuaki Kawachi, Hiromasa Suzuki
COMPGEOM
2009
ACM
14 years 4 months ago
Visibility maps of realistic terrains have linear smoothed complexity
We study the complexity of the visibility map of terrains whose triangles are fat, not too steep and have roughly the same size. It is known that the complexity of the visibility ...
Mark de Berg, Herman J. Haverkort, Constantinos P....