[Insight-users] calculators?

[yasser salman]

hi all..,
i'm using the  calculators to calculate the total mass
of my 3D region, i need to know the physical meaning
to calculates the first moments . i read the comments
in deoxgen and also in .h files but still missing the
meaning, also can i found anthor volumetric
measurements for 3d region (brain tumors in my case)
in itk..,?

calculator->SetImage( connectedThreshold->GetOutput()
);
 calculator->Compute();
double area = calculator->GetTotalMass()/255;
thanx .,
yasser..,

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