Presenter: Robert Garst
Unmanned Aerial Systems (UAS), or “drones” are taking to new heights in a variety of fields.
These new technologies have an enormous potential for the geosciences. Using a hobby grade
UAS and a small action camera as a remote sensing platform, a number of topographic
products have been derived. These products include a detailed orthometric mosaic, DEM, and a
point cloud. The method "structure from motion" (SFM) is employed in the creation of these
products and requires a great deal of image overlap (at least 60%) to perform the bundle
adjustment. The images and ground control points are the only source data required to generate
A small partially built neighborhood was chosen as the test area due to a variety of ground
features. Despite the challenges of the consumer grade barrel lens, the initial results proved
promising, with an image displacement on the order of one meter. In the near future, this will be
rectified which should reduce the number of artifacts and improve the interpolation of the point
Robert Garst received a bachelor's degree from Western Illinois University with a major in
Geography, and a minor in GIS. He is employed at Indian River County as a GIS Analyst where
his primary duties include primary data collection and maintenance of the utility,
telecommunication, and addressing datasets.