Is this a secret?
(Grendel--your message noted--at times displacement is helpfull)

Anyway, taking a file into a 3D programme and setting it up to produce an image that can be useful as a displacement map is pretty painful..

A solution, with MoI, because the default lighting is perfect, is to just do a screengrab and trim/save that image as your end result.

Hope this image shows the simplicity.

Brian