
I ask to Agisoft support team and they told me the next workflow: build mesh in PhotoScan, export mesh, open it in Blender (or similar 3D editing application), create custom UV parametrization and apply to the mesh, import mesh back to PhotoScan, build texture using Keep UV option. I am trying to unwrap the UV unwrapped texture of the vault through Blender but I must to assess the accuracy to know if acceptable. I was training with a frescoed barrel vault to studying for future applications in maintenance tasks of the paintings stamped on the intrados vault, so I would like to obtain the unwrapped model (UV unwraped mapping) of the textured vault which I have got previously with Agisoft PhotoScan. I have a problem similar to the tunnel of Geophotologist:
