Hello All,

I'm trying to extract interfaces (between tissues) from segmented volumes, and Thomas Jaroszewicz modified vtkSliceCubes should do the trick, but I read in the volume using vtkPNMReader which SliceCubes doesn't like... it gives the error:

"Could not type convert reader which is of type vtkPNMReader, to type vtkVolumeReader"

It seems that only vtkVolume16Reader is the only reader acceptable to SliceCubes.

Ideally I would like vtkPNMReader->vtkImageGaussianSmooth->vtkSliceCubes

So...

(1) Is there a way to read in a volume with vtkPNMReader and write slices that vtkVolume16Reader will accept

(2) Is there a way to preprocess a volume in such a way that only the voxels on a interface are left in the volume so that vtkMarchingCubes can extract this interface?

Thanks,

Goodwin