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Triangulated irregular network optimization from contour data using bridge and tunnel edge removal

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This paper proposes an optimization methodology associated with the conversion process from a contour-based elevation model to a TIN model and two algorithms that are combined to reach an optimized result. The first algorithm uses a constrained Delaunay triangulation, in which each contour is used as a non-crossing break line. The second algorithm is designed to eliminate edges known as bridge and tunnel edges by inserting a point using parabolic interpolation at the middle of such features.
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Document Type: Research Article

Publication date: 2001-04-01

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