## On Approximating Contours of the Piecewise Trilinear Interpolant Using Triangular Rational-Quadratic Bézier Patches

- Bernd Hamann, Issac J. Trotts, Gerald E. Farin
- IEEE Trans. Vis. Comput. Graph.
- 1997

We study properties of contour surfaces of trilinear scalar fields, and give a classification based on how many unconnected surface parts they consist of. Furthermore, we introduce the concept of the segment number of a voxel. The segment number is a threshold-independent measure which estimates how complicated the contours inside the voxel are expected to… (More)

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