Abstract
Unmanned aerial vehicles are increasingly being used in close range
photogrammetry. Real-time observation of the Earth’s surface and the photogrammetric
images obtained are used as material for surveying and environmental inventory. The
following study was conducted on a small area (approximately 1 ha). In such cases, the
classical method of topographic mapping is not accurate enough. The geodetic method
of topographic surveying, on the other hand, is an overly precise measurement technique
for the purpose of inventorying the natural environment components. The author of the
following study has proposed using the unmanned aerial vehicle technology and tying in the
obtained images to the control point network established with the aid of GNSS technology.
Georeferencing the acquired images and using them to create a photogrammetric model
of the studied area enabled the researcher to perform calculations, which yielded a total
root mean square error below 9 cm. The performed comparison of the real lengths of
the vectors connecting the control points and their lengths calculated on the basis of the
photogrammetric model made it possible to fully confirm the RMSE calculated and prove
the usefulness of the UAV technology in observing terrain components for the purpose
of environmental inventory. Such environmental components include, among others,
elements of road infrastructure, green areas, but also changes in the location of moving
pedestrians and vehicles, as well as other changes in the natural environment that are not
registered on classical base maps or topographic maps.
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