In the two-year period 2011/2012 a multidisciplinary project of restoration was carried out in the Cathedral of Amfissa (Greece). The interior of the building was decorated through the secco painting technique by the Greek artist Spyros Papaloukas between 1926 and 1931. During the campaign forty scans have been done with 3D laser scanner – in all about five billion of acquired points - with its photos sphere, in order to get a 3D digital point modeling in RGB. Point cloud got behind the ortho pictures extraction of every inner elevation. These pictures allowed a redrawing of paintings in vector. The final scripts have been developed from the usual degradation analysis, by indicating those areas subject to a major level of criticality through photographic details gathered in a final report. The complexity of this case study has allowed us to conceive some useful reflections, in order to focus on the proper plans of 3D scanner use for survey of painted walls.
