[vtkusers] Please help --> vtkConnectivityFilter

[Michnay Balázs]

Dear VTK Users,
I've been trying to find out how vtkConnectivityFilter really works but 
I'm stuck at one point and my code doesn't do what I expect.

What my code does:
- I instantiate an object from vtkConnectivityFilter class
- I set its input (which is a vtkImageData that was an output of a 
threshold filter)
- Extraction mode: SetExtractionModeToAllRegions()
- I call the Update method to perform operation
- After the process ended I use GetNumberOfExtractedRegions() to 
check how many regions it extracted but it always returns 1.

The (binary) image has 7 components, which I'd like to extract.
How can I individually handle one extracted region? My final goal is to 
build a volume from these extracted regions.

Please let me know what the problem is.
thanks for your help in advance,
wishing you all the best,

MB