[vtkusers] vtkCellLocator slow

[Prashanth]

All,
   I have an unstructured grid that was obtained by segmenting an image
volume and 'am trying to find the closest cell in the unstructured grid to
the voxels in the image. In other words, I'm trying to find what cell in the
unstructured grid contains the ith voxel in the image volume. I'm using
vtkCellLocator for the search and it takes me about 10mins to classify the
voxels in an image volume of size: 247 x 147 x 165. Does anyone know of a
filter that does this efficiently?
Thanks
Prashanth
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