ABSTRACT
The paper deals with assessment of utilization of airborne laser scanning data with low density for archaeological sites detection and analysis. Light Detection and Ranging (LiDAR) offers fast and quality method for data capture. The advantage of lower density preconditions for LiDAR data is that it results in decreasing processing time and data storage requirements. Within the area of interest, LiDAR data was obtained by airborne laser scanning realized by the National Forest Centre during the growing season with low density of points per m2. Input point cloud data was filtered and then interpolated into the form of raster digital elevation model in order to compare it with reference etalon. The reference etalon was obtained by surveying using universal measuring station considering the morphology of the terrain. Measured points within the reference etalon was interpolated into the form of raster digital elevation model using ordinary kriging method. Both digital elevation models were compared and tested in terms of methodology in accordance with International Organization for Standardization (ISO) standard ISO 19157:2013 Geographic information—Data quality. Methods such as point-to-surface or surface-to-surface was used in the testing procedure. The paper is resulting into the recommendations for input conditions and criteria in the using of airborne laser scanning method with low density and within the densely-vegetated areas. Our study was realized in the field of archaeology in order to obtain information about the presence or absence of the archaeological site, as well as to obtain its suitable digital elevation model. Digital elevation model created from LiDAR data can then be used for the cultural heritage documentation and can be the basis for various spatial analysis, such as calculation of volume, relative height, visibility, etc.
