[Insight-developers] Image Derivatives - physical vs. index space

[Samuel Gerber]

Hi

I need to compute image derivatives in physical space. From my 
understanding the derivatives computed from itkDerivativesImageFilter 
are either in index space or in physical space but without taking the 
direction into account. I found this page:
http://www.vtk.org/Wiki/Proposals:Oriented_Image_Registration
and was wondering what the current status is and the preferred way to 
compute  derivatives in physical space (including orientation).

Thanks
Sam