[Insight-developers] Is there an inverse operation to ExtractImageFilter?

[Kent Williams]

... or should there be?

We (at Iowa) have code that re-orients a 4D image by reorienting each of 
the 3D images of which it is comprised.  Basically it use the 
ExtractImageFilter to get each 3D volume into a 3D Image, runs the 
OrientImageFilter on it, then copies from the 3D image a pixel at a time 
back into the 4D Output Image.

This last step is what I'm curious about. I don't see any filter or 
function that would copy an image into a higher dimensional image.  Or I 
guess more generally, copy a region into another region.  Am I missing 
something?