vtkNIFTIImageReader cannot read the origin of NIFTI Image

Support
1

I create a NIFTI image file by using SimpleITK and saved as .nii.gz file.
However, when I load it by vtkNIFTIImageReader, the origin of the output vtkImageData turns out to be (0, 0, 0), which is not what I had set in SimpleITK’s method.
I tried to load the .nii.gz file in other ways like 3DSlicer and SimpleITK, they all read the right origin parameters.
Why does vtkNIFTIImageReader cannot get the right infomation?

2

The vtkNIFTIImageReader stores that information in SFormMatrix and QFormMatrix.

For more information see vtkNIFTIImageReader.h and vtkNIFTIImageReader.cxx