Accurate computer visualization of trilinear isosurface

초록

We describe a simple algorithm for topologically correct isosurface extraction from a volumetric dataset that is defined in the form of piecewise trilinear interpolants. An isosurface of a trilinear interpolant may have complicated topology and geometry. We show that proper decomposition of a cube into tetrahedra and pyramids allows topologically and geometrically accurate reconstruction of the isosurface. The cube decomposition is performed only when it is necessary to avoid generating unnecessarily large number of triangles. Our method can be applied to topologically accurate volume visualization. © EuroJournals Publishing, Inc. 2008.

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