Interesting 3D real time underground mapping of the Aposa Underground River in Bologna (Italy).
In collaboration with Topcon Italy, the Surveyors of Bologna (Collegio dei Geometri) and the local Association Amici delle Acque.
We have been surveying the underground river for about 500 meters, both outside and underground.
The surveying time is equal to the walking one.
The outdoor surveying
The river is fully covered by buildings and roads and it is almost impossible to manage a 3D surveying in a reasonable period of time (and with affordable costs), without using Heron.
In 4 hours, we have been surveying twice the tunnel and once the surveying path from the entrance and he exit of the tunnel.
The data have been exported in point clouds, managed with Heron Desktop and later with JRC 3D Reconstructor.
