SCAN2FX for Unreal - Baking Textures and 3D Paint with Scans
The SCAN2FX for Unreal plug-in allows 3D painting with panoramas onto the mesh.
The tools also enable the computation of a UV map for a given mesh.
Once a UV map has been established for your mesh, SCAN2FX allows you to bake the overall texture or individual paint layers, so that additional paint can be overlaid or to simply optimize performance once your work is done.
http://scan2fx.com