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UAV mapping of an archaelogical site using RGB and NIR high-resolution data
* 1 , * 1 , * 1 , * 2
1  Czech Geological Survey
2  Institute of Archaeology of the Czech Academy of Sciences


During the last decade remote sensing methods have significantly developed. The technological progress in development of new sensors and techniques opened up a large scope of new applications including near-field data collecting using Unmanned Aerial Vehicles (UAVs). State-of-the-art UAVs technologies provide such advantages as a cost-effectiveness and temporal flexibility. For our case study we acquired the high-resolution UAV data over the archaeological site near Černouček, the Czech Republic. This site has been discovered at the beginning of 1990’ as a result of low altitude aerial reconnaissance carried out by the Institute of Archaeology, Czech Academy of Sciences. Two ditched enclosures were identified due to vegetation marks in late spring and early summer – higher moisture and presence of some chemical constituents in the secondary infill of the ditches give better conditions for plants above them. In 2017, new UAV data (RGB and Near-infrared data: NIR) were acquired over the Černouček site at two different temporal windows (June, October) to find out whether there are some other objects hidden under ground. Using the RGB data digital elevation models were derived while the NIR data were used to compute vegetation indices (VI), further spatial filtering allowing enhancing the local anomalies in the VI values was employed. As a result, several small objects were detected and suggested for the further investigations.

Keywords: UAV, Unmanned Aerial Vehicle, archaelogy, NIR, RGB, Near-infrared, digital elevation model, remote sensing, Cernoucek, Czech Republic