Boundaries in Digital Planes

@inproceedings{Khalimsky1990BoundariesID,
  title={Boundaries in Digital Planes},
  author={Efim Khalimsky and Ralph Kopperman and Paul R. Meyer},
  year={1990}
}
The importance of topological connectedness properties in processing digital pictures is well known. A natural way to begin a theory for this is to give a definition of connectedness for subsets of a digital plane which allows one to prove a Jordan curve theorem. The generally accepted approach to this has been a non-topological Jordan curve theorem which requires two different definitions, 4-connectedness, and 8-connectedness, one for the curve and the other for its complement. 

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