This table mounted model belongs to the exhibition of the Oberharzer Bergwerksmuseum in Clausthal-Zellerfeld. It was constructed in 1928 by Oscar Langer on the basis of historic .mine plans and photos. It shows the buildings and mining landscape of the formerly free mining towns Clausthal and Zellerfeld around 1650.
The digital model consists of around 35 million intermeshed points. Therefore more than 600 photos from different view angels were taken on-site in the museum and were processed by Strucuture from Motion technique. Taking photos was challenging, because oft the model being mounted behind glas which led to strong reflections. This was minimized by shading light and applying high exposure times, as well as using a polariser.