[ITK-users] [ITK] itk Python: origin of DICOM slice does not change

[Timothee Evain]

Hi,

You refer to the DICOMImageReadWrite example. If you don't change the writing part, I think your problem comes from the fact that you assign the read metadata directly to the output ( ->UseInputMetaDataDictionaryOff() ) so the original origin will be saved.

HTH,

Tim

----- Mail original -----
De: "D'Isidoro Fabio" <fisidoro at ethz.ch>
À: insight-users at itk.org
Envoyé: Lundi 19 Septembre 2016 22:09:39
Objet: [ITK] [ITK-users] itk Python: origin of DICOM slice does not change



Hi, 



Following the code ResampleImageFilter2.cxx, I am applying an Identity Transform to a single DICOM slice, I change the origin to 



output_origin = reader.GetOutput().GetOrigin() + offset 



and I write the transformed DICOM slice into a new DICOM slice (following the code DICOMImageReadAndWrite.cxx). 



I visualize the written DICOM slice with a viewer (it’s an itk-vtk segmentation software). 



The transformed DICOM slice looks as it should. Surprisingly however the viewer shows the original input values as origin. This is confirmed by the fact that if I read with an itk script the written DICOM slice again, and I print the information of the DICOM slice, the origin is still the original one and not the modified one. 



How could this be? 



Original DICOM slice: 







Transformed DICOM slice: 









Thank you for help, 



Fabio. 

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