[vtkusers] Get scalar values of vtkImageData in world coordinates

[Jothy]

Hi all,

Is it possible to get the scalar values in vtkImageData in world
coordinates. I mean we could get the values bu
vtkImageData->GetScalarComponentAsDouble(x,y,z,0). X,y,z are the voxel
indices, if my origin is at the centre of the image, I would like to get the
value by (x=0,y=0,z=0,0).

Any suggestions?

Thanks

Jothy
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