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Reports (Research Report) Year : 2009

## Manifold Reconstruction using Tangential Delaunay Complexes

(1) , (1)
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Jean-Daniel Boissonnat
• Function : Author
• PersonId : 830857
Arijit Ghosh
• Function : Correspondent author
• PersonId : 865421

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#### Abstract

We give a provably correct algorithm to reconstruct a $k$-dimensional manifold embedded in $d$-dimensional Euclidean space. Input to our algorithm is a point sample coming from an unknown manifold. Our approach is based on two main ideas~: the notion of tangential Delaunay complex, and the technique of sliver removal by weighting the sample points. Differently from previous methods, we do not construct any subdivision of the embedding $d$-dimensional space. As a result, the running time of our algorithm depends only linearly on the extrinsic dimension $d$ while it depends quadratically on the size of the input sample, and exponentially on the intrinsic dimension $k$. To the best of our knowledge, this is the first certified algorithm for manifold reconstruction whose complexity depends linearly on the ambient dimension. We also prove that for a dense enough sample the output of our algorithm is isotopic to the manifold and a close geometric approximation of the manifold.

### Dates and versions

inria-00440337 , version 1 (10-12-2009)
inria-00440337 , version 2 (16-09-2011)

### Identifiers

• HAL Id : inria-00440337 , version 2

### Cite

Jean-Daniel Boissonnat, Arijit Ghosh. Manifold Reconstruction using Tangential Delaunay Complexes. [Research Report] RR-7142, INRIA. 2009. ⟨inria-00440337v2⟩

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