above the main site is the cacina rustica, a storage place for thousands of fragments of two frescoestiny bits of rubble to big pieces. so no—one knows exactly how these frescoes look like. there are lots of missing pieces. it�*s not like an ordinary puzzle. there will be a lot of holes in this fresco. these are three—dimensional pieces which are flat on one side. on the flat side, there is usually some decoration, some colour, and there is a kind of a three—dimensional structure, and these pieces do not match exactly, so it�*s a very difficult and challenging problem. the puzzle has remained unsolved for decades, and now, a team led by the ca�* foscari university of venice, will create a robotic system 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 p