Cavazza, Niccolò ; Ethier, Marc ; Frosini, Patrizio ; Kaczynski, Tomasz ; Landi, Claudia (2012) Comparison of persistent homologies for vector functions: from continuous to discrete and back.
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The theory of multidimensional persistent homology was initially developed in the discrete setting, and involved the study of simplicial complexes filtered through an ordering of the simplices. Later, stability properties of multidimensional persistence have been proved to hold when topological spaces are filtered by continuous functions, i.e. for continuous data. This paper aims to provide a bridge between the continuous setting, where stability properties hold, and the discrete setting, where actual computations are carried out. More precisely, a stability preserving method is developed to compare rank invariants of vector functions obtained from discrete data. These advances confirm that multidimensional persistent homology is an appropriate tool for shape comparison in computer vision and computer graphics applications. The results are supported by numerical tests.
|Uncontrolled Keywords:||Multidimensional persistent homology; axis-wise interpolation; filtration; matching distance; topological aliasing|
|Subjects:||Area 01 - Scienze matematiche e informatiche > MAT/03 Geometria|
|Depositato da:||Patrizio Frosini|
|Depositato il:||16 Jan 2012 17:47|
|Last modified:||21 Feb 2012 11:20|
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