[Insight-users] Calculate Image Position/Orientation after Rotation

[Luis Ibanez]

Hi Cam,

Please read the ITK Software Guide


      http://www.itk.org/ItkSoftwareGuide.pdf


in particular the section on spatial Transfoms.




To put it short:



A)  You transform the orientation by storing the
     vector values in itk::Vector<> classes and
     invoking the method

              transform->TransformVector()



B)  You transform the patient position by storing
     values in an itk::Point<> class and then invoking
     the method

               transform->TransformPoint()





If you just need a rotation around the Y axis,
you can easily solve your problem by using the
itk::VersorRigid3DTransform.




    Regards,



       Luis



----------------------------
Cam Crews wrote:

> Hello,
> 
> When rotating a volume around a world axis, I'd like to write back out
> the new Image Position (Patient) and Image Orientation (Patient) DICOM
> tags...  Do you have any ideas for how to calculate these new values? 
> I'm just doing a world rotation around the Y-axis.
> 
> Cam
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