Hi,<br><br>it depends on what you want to do with your clipped output...<br>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.<br>
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,<br>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<br>
unstructured grid.<br><br>HTH<br>Jerome<br><br><div class="gmail_quote">2010/1/22 superzz <span dir="ltr"><<a href="mailto:jxdw_zlf@yahoo.com.cn">jxdw_zlf@yahoo.com.cn</a>></span><br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<br>
Hello<br>
With vtkClipPolyData, we can clip poly data with implicit function. I want<br>
to clip ImageData with implicit function now. But there is no vtkClipImage<br>
class. Does vtk support this function now?<br>
<br>
Thanks<br>
<br>
superZZ<br>
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