[vtkusers] bug in vtkExtractVOI?

[Grace Chen]

Hi there,

I try to compute the initial translation of the two 3D data.  However, after
I use vtkExtractVOI to extract a part (also a volume) from one of the 3D
data.  The origin stays the same!  In my program, the vtkImageData is used
to be converted to itk::Image to compute the initial translation, so if the
origin information stay the same, the center of the image is wrong.  So, I
wonder if the definition of the term "origin" differs in vtk and itk?

Thanx!

Grace
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