Circular inspection carried out as part of a study aimed to automate areal damages detection.

Job done with the 3DReshaper software and its flatness analysis tool of the Digital Surface Model (DSM generated by aerial photogrammetry) allowed the algorithmic detection of about ten holes on the external concrete structure and their classification by gravity levels (depth holes) and height (by altimetric coordinate). Subsequently, the RGB orthophoto (layered with DSM) also allowed to precisely identify the damages nature. For example and as illustrated above: bursting of concrete with corroded apparent reinforcement constituting a major danger for the durability of the structure..

A very good use case with a semi-automated workflow where MNS and Orthophoto are complementary: the first used for the damages detection and the second for the pathologies interpretation.