Abstract
We discuss certain n-ary relations (\(n>1\) an integer) and show that each of them induces a connectedness on its underlying set. Of these n-ary relations, we study a particular one on the digital plane \(\mathbb Z^2\) for every integer \(n>1\). As the main result, for each of the n-ary relations studied, we prove a digital analogue of the Jordan curve theorem for the induced connectedness. It follows that these n-ary relations may be used as convenient structures on the digital plane for the study of geometric properties of digital images. For \(n=2\), such a structure coincides with the (specialization order of the) Khalimsky topology and, for \(n>2\), it allows for a variety of Jordan curves richer than that provided by the Khalimsky topology.
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Acknowledgement
This work was supported by the Brno University of Technology Specific Research Program, project no. FSI-S-17-4464.
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Šlapal, J. (2017). A Relational Generalization of the Khalimsky Topology. In: Brimkov, V., Barneva, R. (eds) Combinatorial Image Analysis. IWCIA 2017. Lecture Notes in Computer Science(), vol 10256. Springer, Cham. https://doi.org/10.1007/978-3-319-59108-7_11
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DOI: https://doi.org/10.1007/978-3-319-59108-7_11
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