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TECHNICAL PAPERS

Hierarchical Iso-Surface Extraction

[+] Author and Article Information
Ulf Labsik

Computer Graphics Group, University of Erlangen-Nuremberge-mail: labsik@informatik.uni-erlangen.de

Kai Hormann

California Institute of Technologye-mail: hormann@cs.caltech.edu

Martin Meister, Günther Greiner

Computer Graphics Group, University of Erlangen-Nuremberg

J. Comput. Inf. Sci. Eng 2(4), 323-329 (Mar 26, 2003) (7 pages) doi:10.1115/1.1559893 History: Received October 01, 2002; Revised January 01, 2003; Online March 26, 2003
Copyright © 2002 by ASME
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References

Figures

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First three levels and final results of our hierarchical iso-surface extraction algorithm
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Iso-surface M2(900) using box filter (a), Gauß filter (b), median filter (c), and dilation (d) to compute f2
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Filtering the input signal: (a) original voxels, (b) voxels after low-pass filtering, (c) voxels after dilation
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Iso-surfaces M3(900) (gray) and M0(900) (green)
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Removing short edges from the extracted iso-surface with a two-pass mesh decimation algorithm
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Iso-surface Sl with iso-distance lines (dotted) and distance gradients gv and normals nv at two vertices of the mesh
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Distance gradient and normal vector at a vertex in four different situations. The gray-shaded region indicates the region enclosed by the iso-surface and the dashed line its medial axis.
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Examples of vertical sections from the reconstructed surfaces in Figs. 1 and 9
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Original and reconstruction of a drinking pot featuring a pygmy (Athens, 5th century b.c.)
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Original and reconstruction of a red-figured amphora (Athens, 5th century b.c.)
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Adaptive reconstruction of the brain surface from a segmented MRI data set

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