to analyse and eventually piece together the frescoes. called repair, or reconstructing the past: artificial intelligence and robotics meet cultural heritage, it's the first time machine learning and artificial intelligence techniques will be used to take on a project of this scale. the robot is scanning a piece of fresco using polarised lenses and so, at the end of the process, the piece will be scanned in 3d. with the same infrastructure and the same type of technology, we can also scan the same piece using hyperspectral sensors that are able to collect information that the human eyes cannot see. this information includes the residual colours of pigments used by the romans which cannot be seen with the naked eye. what we can see here is basically, the light coming from our object at different wavelengths.