Department of Computer Science | Institute of Theoretical Computer Science | CADMO

Theory of Combinatorial Algorithms

Prof. Emo Welzl and Prof. Bernd Gärtner

Mittagsseminar (in cooperation with M. Ghaffari, A. Steger and B. Sudakov)

Mittagsseminar Talk Information

Date and Time: Tuesday, February 07, 2006, 12:15 pm

Duration: This information is not available in the database

Location: This information is not available in the database

Speaker: Joachim Giesen

Conformal Alpha Shapes

Conformal alpha shapes are a new filtration of the Delaunay triangulation of a finite set of points in Rd. In contrast to (ordinary) alpha shapes the new filtration is parameterized by a local scale parameter instead of the global scale parameter in alpha shapes. The local scale parameter conforms to the local geometry and is motivated from applications and previous algorithms in surface reconstruction. We show how conformal alpha shapes can be used for surface reconstruction of non-uniformly sampled surfaces, which is not possible with alpha shapes.

(Joint work with Frederic Cazals, Mark Pauly and Afra Zomorodian)

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