This table mounted model belongs to the exhibition of the Oberharzer Bergwerksmuseum in Clausthal-Zellerfeld. It was designed and constructed by mine surveying engineer Oscar Langer in 1929. The 3-dimensional surface is reconstructed by wires, which follow the contour lines. The landscape is complemented by the outcrop of veins, water bodies and localities. Furthermore the 3rd dimension is shown by subsurficial cross sections oft the vein related mine bodies.
The 3D digitalization of the model was performed by Structure from Motion (SfM) technique. Therefore 406 photos of the model were taken and processed, resulting in a point cloud with more than 50 million points.
The photos were taken on-site in the museum. Therefore a mobile stand was used, which allowed the systematical aquisition of photos, especially perpendicular from above the model.