[vtkusers] How to understand the slab thickness, slab resolution, spacing

[zhang qiang]

Dear David:

    Sorry for not CC to vtkusers list. 

    For vtkImageReslice, if the output spacing[2] = 0.4, I can set the
thickness of resliced image to 0.4*n by set the SetSlabNumberOfSlices to n.
If I want the thickness to be 1mm, n will be 2.5. But the type of n is int,
so n can not be 2.5, which means the thickness can not be 1mm if the
outputspacing[2]=0.4. Am I right?

    On the other hand, I still feel confused about the vtkImageSlabReslice.
What's the meaning of slab resolution and slab thickness? And after set the
output spacing to (0.4,0.4,0.4), why the reslicedSpacing[2] of resliced
image was not 0.4?

        vtkSmartPointer<vtkImageSlabReslice> resliceFilter =
vtkSmartPointer<vtkImageSlabReslice>::New(); 
        resliceFilter->SetInputData(originalData); 
        resliceFilter->SetOutputSpacing(0.4,0.4,0.4); 
        resliceFilter->SetInterpolationModeToLinear(); 
        resliceFilter->SetOutputDimensionality(3); 
        resliceFilter->Update(); 

        double reslicedSpacing[3]; 
        reslicedData->GetSpacing(reslicedSpacing); 

     Best wishes!
zhang qiang



--
View this message in context: http://vtk.1045678.n5.nabble.com/How-to-understand-the-slab-thickness-slab-resolution-spacing-tp5744188p5744208.html
Sent from the VTK - Users mailing list archive at Nabble.com.