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The construction work is constantly controlled and monitored in order to ensure the compliance of the emerging building with the project for the construction and evaluation of the quality and correctness of its particular elements. Continuous control allows to provide information on the stage of work progress on a current basis, and to detect any construction errors, which in the future may cause instability of the structure. In addition to traditional methods of measuring and acquiring spatial data, terrestrial l...

Currently, it is possible to capture geospatial data, which represents terrain surfaces in the form of point cloud, by using two diametrically different technologies: laser scanning and ?structure from motion? technology which is based on sets of properly acquired 2D photos. Both of these technologies allow to obtain a substantially the same product - point cloud, although it is a direct measurement product from laser scanning technology (TLS), while in the case of the structure from motion technology it is a deri...

The Chapel of St. Kinga is the world?s largest underground temple and one of the biggest attractions of ?Wieliczka? Salt Mine in Poland. The chapel is located about 101 meters underground. The floor is sculpted in a single salt block and impressive chandeliers of salt crystals are made. In the analyzed part of the mine, in chapel?s surroundings, there are almost exclusively dry exploitation excavations, where mining works had been conducted from the 17th to the 20th century. Observations of rock mass movements and...

The use of UAVs is becoming more and more common today. Otherwise, it is not in the field of modern geodesy only, where this technology is already commonly used to facilitate certain types of work. Especially for jobs that do not require extra high precision, work in large areas, or work in poorly accessible places. This article focuses on comparing point clouds produced by the UAV measurement with terrestrial laser scanning point cloud and determining the results precision according to a number of ground control ...