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» On empty convex polygons in a planar point set
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IWCIA
2009
Springer
15 years 4 months ago
What Does Digital Straightness Tell about Digital Convexity?
Abstract. The paper studies local convexity properties of parts of digital boundaries. An online and linear-time algorithm is introduced for the decomposition of a digital boundary...
Tristan Roussillon, Laure Tougne, Isabelle Sivigno...
COMPGEOM
2006
ACM
15 years 5 months ago
Minimum weight triangulation is NP-hard
A triangulation of a planar point set S is a maximal plane straight-line graph with vertex set S. In the minimum weight triangulation (MWT) problem, we are looking for a triangula...
Wolfgang Mulzer, Günter Rote
CGF
2008
126views more  CGF 2008»
14 years 11 months ago
Maximum Entropy Coordinates for Arbitrary Polytopes
Barycentric coordinates can be used to express any point inside a triangle as a unique convex combination of the triangle's vertices, and they provide a convenient way to lin...
K. Hormann, N. Sukumar
WADS
1997
Springer
108views Algorithms» more  WADS 1997»
15 years 3 months ago
Dynamic Data Structures for Fat Objects and Their Applications
We present several efficient dynamic data structures for point-enclosure queries, involving convex fat objects in R2 or R3. Our planar structures are actually fitted for a more ...
Alon Efrat, Matthew J. Katz, Frank Nielsen, Micha ...
ACCV
2009
Springer
15 years 6 months ago
Planar Scene Modeling from Quasiconvex Subproblems
In this paper, we propose a convex optimization based approach for piecewise planar reconstruction. We show that the task of reconstructing a piecewise planar environment can be se...
Visesh Chari, Anil Kumar Nelakanti, Chetan Jakkoju...