[vtkusers] any tips on volume rendering binary image data?

[Dean Inglis]

does anyone have any aesthetically pleasing
ways of volume rendering binary image data 
with vtkVolumeTextureMapper2D?  I keep getting
a displeasing effect showing image voxels stacked
like building blocks.  Shading is also a no go in 
terms of appearance. Image data consists of 0's 
(background) and 1's (foreground). I am currently 
trying to pass the data through vtkImageGaussianSmooth 
to blur the edges slightly.  Is this the way to go?

Dean