Sanecki, Józef; Klewski, Andrzej; Stępień, Grzegorz; Beczkowski, Krzysztof; Jasińska, Monika
(Scientific Journals of the Maritime University of Szczecin, Zeszyty Naukowe Akademii Morskiej w Szczecinie,
2015)
The article presents the technical aspects of Digital Elevation Model (DEM) and Digital Surface Model
(DSM) built on the basic of Very High Resolution (VHR) data to create orthophotomap in a rapid mapping
mode. The final part of the paper is accuracy assessment of orthophotomap built on the same elevation
models which were used in a rapid mapping way. In the article were using aerial photography’s gained from
digital camera UltraCam Xp by Vexcel. The spatial resolution of this images is 0.10 m. Example data of
Gazoport in Świnoujście were processed using photogrammetry software Agisoft PhotoScan. The usefulness
of both DSM and orthophotomap products were achieved by cross calculating mean errors. Orthophotomap
created in a rapid mapping way, with minimum set of images, was built across using Ground Control Points
(GCP). The source of GCP points was the Polish Spatial Data Infrastructure Geoportal. Check points were
measured using both geoportal and Global Navigation Satellite System (GNSS) in the Real Time Kinematic
(RTK) mode.