Automatic Construction of Polyhedral Surfaces From Voxel Representations
Automatic Construction of Polyhedral Surfaces From Voxel Representations
Alan Shaw
The book Automatic Construction of Polyhedral Surfaces From Voxel Representations was written by author Alan Shaw Here you can read free online of Automatic Construction of Polyhedral Surfaces From Voxel Representations book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Automatic Construction of Polyhedral Surfaces From Voxel Representations a good or bad book?
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We call this a "birth" event. At this level the section consists of a single point, which immediately opens into a loop as we ascend. A series of loops is produced until a second critical pxjint of the doughnut is reached. At this point, the loop becomes a "figure eight", and splits into two disjoint loops. We call this event "splitting. " Then, at the third critical point, the loops fuse back into a "figure eight". We call this a "merge" event. The figure eight immediately becomes a simple loo...p. Finally, the single loops shrink down to a point and disappear at the fourth and final criti- cal point (a "death" event). For the embedding of the torus implied by this sectioning, there are four isolated critical points. It can be proven that any differentiable 2-manifold can be embedded in Euclidan 3-space in such a way that its critical points are finite in number, and no more than one occurs on a given level. Also, it can be shown that the only topological changes which can occur are the "birth", "death", "splitting" and "merging" events illus- trated for the torus ^ Each topological change is accompanied by an Euler transition, that is, a change in the Euler number of a contour.
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