A method of boundary estimation from 3D scattered point data without normals by implicit function and Delaunay tetrahedralization |
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Authors: | Taku Itoh |
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Institution: | (1) Faculty of Science and Technology, Seikei University, Musashino Tokyo, 180-8633, Japan |
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Abstract: | Abstract A method of boundary estimation from 3D scattered point data has been proposed. For estimating a boundary, the implicit function-based
method and the Delaunay tetrahedralization are mainly used in the proposed method. An advantage of the proposed method is
that point coordinates are only required as input data. Namely, normals on each of given points are not required as input
data. Instead, the point normals are estimated three times. After each procedure for estimating point normals, the accuracy
of the estimated normals may be better. Therefore, the geometric structure of a surface generated with the estimated normals
is gradually closer to the original surface. Numerical experiments demonstrate that the proposed method enables to estimate
an expected boundary without normals as input data. In addition, the performance of the proposed method is numerically investigated.
The estimated boundary can be obtained as an implicit surface or as a set of triangles. |
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Keywords: | |
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