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Computing a canonical polygonal schema of an orientable triangulated surface
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Source Annual Symposium on Computational Geometry archive
Proceedings of the seventeenth annual symposium on Computational geometry table of contents
Medford, Massachusetts, United States
Pages: 80 - 89  
Year of Publication: 2001
ISBN:1-58113-357-X
Authors
Francis Lazarus  CNRS and University of Poitiers, France
Michel Pocchiola  Dépt d'Informatique, Ecole Normale Supérieure, Paris, France
Gert Vegter  Dept. of Math. and CS, University of Groningen, The Netherlands
Anne Verroust  INRIA Rocquencourt, France
Sponsors
SIGACT: ACM Special Interest Group on Algorithms and Computation Theory
SIGGRAPH: ACM Special Interest Group on Computer Graphics and Interactive Techniques
Publisher
ACM  New York, NY, USA
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Downloads (6 Weeks): 8,   Downloads (12 Months): 30,   Citation Count: 31
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ABSTRACT

A closed orientable surface of genus $g$ can be obtained by appropriat e identification of pairs of edges of a $4g$-gon (the polygonal schema). The identified edges form $2g$ loops on the surface, that are disjoint except for their common end-point. These loops are generators of both the fundamental group and the homology group of the surface. The inverse problem is concerned with finding a set of $2g$ loops on a triangulated surface, such that cutting the surface along these loops yields a (canonical) polygonal schema. We present two optimal algorithms for this inverse problem. Both algorithms have been implemented using the CGAL polyhedron data structure.


REFERENCES

Note: OCR errors may be found in this Reference List extracted from the full text article. ACM has opted to expose the complete List rather than only correct and linked references.

 
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T. Dey and H. Schipper. A new technique to compute polygonal schema for 2-manifolds with application to null-homotopy detection. Discrete and Computational Geometry, 14:93-110, 1995.
 
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CITED BY  31

Collaborative Colleagues:
Francis Lazarus: colleagues
Michel Pocchiola: colleagues
Gert Vegter: colleagues
Anne Verroust: colleagues