[vtkusers] Filter floaters

[Kevin Osborn]

I am rendering a 3D DICOM data set acquired as 1mm CT slices from a CT 
angiogram. The images therefore contain a lot of noise which has a 
similar density value to the tissues of interest. The rendered image 
contains multiple small separate objects (floaters). I have tried to 
smooth the images before rendering however that just makes the floaters 
look smooth :-(. I have used a GE medical workstation in the past that 
has a function to filter floaters in a rendered image to remove objects 
below a certain size. I have looked through the VTK class list to try to 
find a similar filter without luck. Does anyone know of a filter that 
would do the job?

Thanks, Kevin