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» Digital Jordan Curve Theorems
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DGCI
2000
Springer
13 years 9 months ago
Digital Jordan Curve Theorems
The importance of digital geometry in image processing is well documented. To understand global properties of digital spaces and manifolds we need a solid understanding of local pr...
Christer O. Kiselman
CORR
2008
Springer
92views Education» more  CORR 2008»
13 years 5 months ago
Discrete Jordan Curve Theorem: A proof formalized in Coq with hypermaps
This paper presents a formalized proof of a discrete form of the Jordan Curve Theorem. It is based on a hypermap model of planar subdivisions, formal specifications and proofs assi...
Jean-François Dufourd
CORR
2010
Springer
143views Education» more  CORR 2010»
13 years 5 months ago
The Complexity of Proving the Discrete Jordan Curve Theorem
The Jordan Curve Theorem (JCT) states that a simple closed curve divides the plane into exactly two connected regions. We formalize and prove the theorem in the context of grid gr...
Phuong Nguyen, Stephen Cook
WADS
2009
Springer
274views Algorithms» more  WADS 2009»
13 years 9 months ago
New Results on Visibility in Simple Polygons
We show that (A), 14 points on the boundary of a Jordan curve, and (B), 16 points in convex position encircled by a Jordan curve, cannot be shattered by interior visibility domains...
Alexander Gilbers, Rolf Klein
SIAMDM
2011
13 years 6 days ago
When Does a Curve Bound a Distorted Disk?
Consider a closed curve in the plane that does not intersect itself; by the Jordan-Schoenflies Theorem, it bounds a distorted disk. Now consider a closed curve that intersects its...
Jack E. Graver, Gerald T. Cargo