I use a offline workflow (agisoft's Photoscan).
For the scan i made many Pictures (in this case about 50) then processed them in agisoft's photoscan. after that i exported the model to Blender, modelled the faces which cant be seen on the photos ( the side where the rock is standing on) afterwards I imported the model back to photoscan and recalculated the textures. As the last steps I retextured the rest of the model and created the lowpoly versions as well as the textures for them.
hope that helps :)
-siebencorgie
