44. IMPACT OF GROUND CONTROL POINTS (GCPS) DISTRIBUTION AND UNMANNED AERIAL VEHICLE (UAV) FLIGHT PARAMETERS ON ACCURACY OF DIGITAL SURFACE MODEL (DSM)
Low-altitude UAV photogrammetry is a rapid and inexpensive method of acquiring spatial information. For this reason, its popularity has been growing steadily for several years, also on the surveying market. The use of new measurement techniques should be preceded by an analysis of factors affecting the accuracy and the quality of the products created. Nevertheless, there are no guidelines defining methods of data collection by means of the UAV allowing for generation of high quality surveying products. This article aims to study the accuracy of Digital Surface Model (DSM) and ortophotomaps obtained using the UAV, depending on configuration of photogrammetric control network and overlap of photos. For this purpose five UAV flights were conducted differing in forward and side overlaps of photos. Four different configurations of photogrammetric control network were also used. In total, 20 data sets have been developed. Theirs accuracy was verified using 68 check points and reference Digital Terrain Model (DTM).
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- AuthorEdyta Puniach et al.
- AffiliationAGH University of Science and Technology
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