1994 | OriginalPaper | Buchkapitel
Decomposition Algorithms in Geometry
verfasst von : Bernard Chazelle, Leonidas Palios
Erschienen in: Algebraic Geometry and its Applications
Verlag: Springer New York
Enthalten in: Professional Book Archive
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Decomposing complex shapes into simpler components has always been a focus of attention in computational geometry. The reason is obvious: most geometric algorithms perform more efficiently and are easier to implement and debug if the objects have simple shapes. For example, mesh-generation is a standard staple of the finite-element method; partitioning polygons or polyhedra into convex pieces or simplices is a typical preprocessing step in automated design, robotics, and pattern recognition. In computer graphics, decompositions of two-dimensional scenes are used in contour filling, hit detection, clipping and windowing; polyhedra are decomposed into smaller parts to perform hidden surface removal and ray-tracing.