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Browsing by Keyword DSM (Digital Surface Model):

  • 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.

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