Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XL-5/W4, 17-24, 2015
http://www.int-arch-photogramm-remote-sens-spatial-inf-sci.net/XL-5-W4/17/2015/
doi:10.5194/isprsarchives-XL-5-W4-17-2015
© Author(s) 2015. This work is distributed
under the Creative Commons Attribution 3.0 License.
 
18 Feb 2015
3D SURVEYING & MODELING OF UNDERGROUND PASSAGES IN WWI FORTIFICATIONS
P. Rodríguez-Gonzálvez1, E. Nocerino2, F. Menna2, S. Minto2, and F. Remondino2 1Department of Cartographic and Land Engineering, High School of Ávila, University of Salamanca, Ávila, Spain
23D Optical Metrology (3DOM) unit, Bruno Kessler Foundation (FBK), Trento, Italy
Keywords: Digitization, Reconstruction, Modelling, Photogrammetry, Laser scanning, Cultural Heritage, Visualization Abstract. The virtual reconstruction of subterranean structures is a suitable scenario for the integration of different geomatics techniques although narrow passages, lack of light and irregular surface can arise various problems in the data acquisition as well as processing procedures. Generally the final product is a dense and detailed 3D model, whose number of triangles increases quickly according to the complexity of the object. This complexity reduces the efficient use and dissemination of the produced information therefore innovative solutions are sought. The article presents the 3D surveying and modelling of underground passages of World War I (WWI) fortifications. After the acquisition of dense point clouds by means of terrestrial scanning (TLS), a simplification and optimization workflow is performed with the aim of generating a lightweight product that keeps the maximum amount of significant information. A continuous scene representation with a 87% triangle reduction is generated, while the final precision is preserved according to a tolerance predefined by the final user. Such 3D product can be employed as basis for reconstruction, consolidation, preservation and valorisation of the WWI tunnels.
Conference paper (PDF, 1338 KB)


Citation: Rodríguez-Gonzálvez, P., Nocerino, E., Menna, F., Minto, S., and Remondino, F.: 3D SURVEYING & MODELING OF UNDERGROUND PASSAGES IN WWI FORTIFICATIONS, Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XL-5/W4, 17-24, doi:10.5194/isprsarchives-XL-5-W4-17-2015, 2015.

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