Opened Access Finding planar regions in a terrain
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Author: Funke, Stefan
Malamatos, Theocharis
Ray, Rahul
Date: 2004
Document type: Presentation
Abstract: We consider the problem of computing large connected regions in a triangulated terrain of size n for which the normals of the triangles deviate by at most some small fixed angle. In previous work an exact near-quadratic algorithm was presented, but only a heuristic implementation with no guarantee was practicable. We present a new approximation algorithm for the problem which runs in O(n/e2) time and-apart from giving a guarantee on the quality of the produced solution-has been implemented and shows good performance on real data sets representing fracture surfaces with around half a million triangles.
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