How to bevel sharp edges of some object

[cirkirk]

Is there a way to make more or less clean bevels/chamfers of  sharp edges produced by arbitrary height map.  Like making chamfers on a rocks corners?   

I tried to play with edge detect and distance nodes but couldn't make anything good enough without  weird artifacts

 

[Recon03]

better off doing this in your 3d program.

[cirkirk]

The point is to making it on any  procedural height map details, not imported thing.   I see shape extrude node does bevels. Wonder if it's possible on anything else too?