vtkDiscreteMarchingCubes
Section: Visualization Toolkit Graphics Classes
Usage
takes as input a volume (e.g., 3D structured point set) of
segmentation labels and generates on output one or more
models representing the boundaries between the specified label and
the adjacent structures. One or more label values must be specified to
generate the models. The boundary positions are always defined to
be half-way between adjacent voxels. This filter works best with
integral scalar values.
If ComputeScalars is on (the default), each output cell will have
cell data that corresponds to the scalar value (segmentation label)
of the corresponding cube. Note that this differs from vtkMarchingCubes,
which stores the scalar value as point data. The rationale for this
difference is that cell vertices may be shared between multiple
cells. This also means that the resultant polydata may be
non-manifold (cell faces may be coincident). To further process the
polydata, users should either: 1) extract cells that have a common
scalar value using vtkThreshold, or 2) process the data with
filters that can handle non-manifold polydata
(e.g. vtkWindowedSincPolyDataFilter).
Also note, Normals and Gradients are not computed.
To create an instance of class vtkDiscreteMarchingCubes, simply
invoke its constructor as follows
obj = vtkDiscreteMarchingCubes
Methods
The class vtkDiscreteMarchingCubes has several methods that can be used.
They are listed below.
Note that the documentation is translated automatically from the VTK sources,
and may not be completely intelligible. When in doubt, consult the VTK website.
In the methods listed below, obj
is an instance of the vtkDiscreteMarchingCubes class.
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string = obj.GetClassName ()
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int = obj.IsA (string name)
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vtkDiscreteMarchingCubes = obj.NewInstance ()
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vtkDiscreteMarchingCubes = obj.SafeDownCast (vtkObject o)