[vtkusers] vtkClipImage

[Jérôme]

Hi,

it depends on what you want to do with your clipped output...
If you want to extract a subset of the ImageData (ie cube-like implicit
function), then you can use vtkExtractVOI. It will produce a smaller
ImageData suitable for all ImageAlgorithms.
However, if your implicit function is eg. a sphere, it is not possible to
build an imagedata, because it is based on an implicit grid based on
extent/spacing. You can use vtkClipDataSet,
that will give you a vtkUnstructuredGrid as output. Note that, for instance,
Paraview is able to compute an histogram from unstructured grid, and VTK as
volume rendering support for
unstructured grid.

HTH
Jerome

2010/1/22 superzz <jxdw_zlf at yahoo.com.cn>

>
> Hello
> With vtkClipPolyData, we can clip poly data with implicit function. I want
> to clip ImageData with implicit function now. But there is no vtkClipImage
> class. Does vtk support this function now?
>
> Thanks
>
> superZZ
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