Abstract
A dense digital surface model is one of the products generated by using UAV aerial survey data. Today more and more specialized software are supplied with modules for generating such kind of models. The procedure for dense digital model generation can be completely or partly automated. Due to the lack of reliable criterion of accuracy estimation it is rather complicated to judge the generation validity of such models. One of such criterion can be mobile laser scanning data as a source for the detailed accuracy estimation of the dense digital surface model generation. These data may be also used to estimate the accuracy of digital orthophoto plans created by using UAV aerial survey data. The results of accuracy estimation for both kinds of products are presented in the paper.
Highlights
UAV is a new trend in aerial photography
The reliability of MLS data application as a source of detailed accuracy estimation for generating digital surface model (DSM), digital elevation models (DEMs) and orthophoto plan should be investigated for every type of UAV and the ground sampling distance (GSD) as well
UAV Supercam S250 was equipped with a dual-frequency receiver, a camera Sony Alpha ILCE-6000 with a sensor of 24 megapixels, lens with focal length of 20 mm
Summary
UAV is a new trend in aerial photography. Over the last years the application of UAVs has increased dramatically. It became possible to use aerial survey data for automatic generation of a dense digital surface model, which is similar to a point cloud obtained by laser scanning method. It means that a number of points in DSM, when using UAV, can be the same as the one obtained from laser scanner data. The reliability of MLS data application as a source of detailed accuracy estimation for generating DSM, DEM and orthophoto plan should be investigated for every type of UAV and the GSD as well
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