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FOCS
2009
IEEE
15 years 4 months ago
Instance-Optimal Geometric Algorithms
We prove the existence of an algorithm A for computing 2-d or 3-d convex hulls that is optimal for every point set in the following sense: for every set S of n points and for ever...
Peyman Afshani, Jérémy Barbay, Timot...
ICDE
2004
IEEE
88views Database» more  ICDE 2004»
15 years 11 months ago
Group Nearest Neighbor Queries
Given two sets of points P and Q, a group nearest neighbor (GNN) query retrieves the point(s) of P with the smallest sum of distances to all points in Q. Consider, for instance, t...
Dimitris Papadias, Qiongmao Shen, Yufei Tao, Kyria...
PCM
2004
Springer
105views Multimedia» more  PCM 2004»
15 years 3 months ago
Image Registration Using Triangular Mesh
Image registration is a fundamental problem in the area of computer vision and has been extensively researched. Different image registration algorithm has its pros and cons. Unlik...
Ben Yip, Jesse S. Jin
ESA
2000
Springer
124views Algorithms» more  ESA 2000»
15 years 1 months ago
Higher Order Delaunay Triangulations
For a set P of points in the plane, we introduce a class of triangulations that is an extension of the Delaunay triangulation. Instead of requiring that for each triangle the circ...
Joachim Gudmundsson, Mikael Hammar, Marc J. van Kr...
GRAPHICSINTERFACE
2004
14 years 11 months ago
Perspective Accurate Splatting
We present a novel algorithm for accurate, high quality point rendering, which is based on the formulation of splatting using homogeneous coordinates. In contrast to previous meth...
Matthias Zwicker, Jussi Räsänen, Mario B...