offset/muloffset for images

It would be great to have offset and muloffset parameters for the ModifyImage function, in analogy to those parameters in the ModifyGraph for traces function.

The simplest use would be:
modifyimage myImage offset={x_offset,y_offset}

in analogy to
modifygraph offset(myTrace)={x_offset,y_offset}

A more sophisticated use would be dragging around images with the mouse, as one can graphs.
If you are willing to change the wave you could accomplish this using, e.g., ImageTransform with the keyword offsetImage.