Comparison of Survey Methods for Surface Change Estimation
by Dr. Dimitrios Bolkas
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Date: June 23, 2021
Time: 12:00 PM - 1:00 PM
CE Credits: 1 PDH
This webinar will compare different surveying methods, namely small unmanned aerial system (sUAS) photogrammetry and terrestrial laser scanning (TLS), for capturing soil surface change in a mine reclamation project. Datasets from two epochs, before and post-tillage were acquired at a mine reclamation project in Central PA. In addition to the point cloud data acquisitions, we have augmented comparisons with traditional total station survey used as reference for vegetation penetration. We compare the sUAS and TLS datasets for their advantages and disadvantages through a cross section analysis. The insights gained by this project can help surveyors, photogrammetrists and other practitioners to improve their data acquisition planning in similar applications.
is an Assistant Professor of Surveying Engineering at the Pennsylvania State University, Wilkes-Barre Campus. He received his B.Sc. in Surveying Engineering from the Aristotle University of Thessaloniki, Greece, and his Ph.D. in Geological Sciences and Engineering from Queen’s University, Kingston, Canada. He has a diverse experience in geomatics that includes terrestrial, mobile, and airborne laser scanning, digital elevation models, unmanned aerial systems, photogrammetry, GNSS networks, geoid and gravity-field modeling. His main research interest is on building methods to increase, understand, and assess quality/uncertainty in 3D geospatial datasets. In addition, his research develops new methods and techniques to enhance functionality of 3D geospatial data and models. Recent research endeavors focus on creating virtual environments from point-cloud data and using virtual reality to enhance engineering education. Dr. Bolkas is a director in the executive board of the Surveying and Geomatics Educator’s Society (SaGES). He is also a member of the Education Committee of the Pennsylvania Society of Land Surveyors (PSLS).
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