NC State Port Authority has been proactive in their GIS Program since 2009 and has accumulated many data layers that they maintain onsite. While they typically rely on the State orthoimagery projects to keep their background imagery updated, they were interested in a cost-effective method of increasing the frequency of that imagery. WithersRavenel proposed to fly the Port of Wilmington with UAS technology and provide updated mosaic orthoimagery of the approximately 800 acres of property that the Authority manages. A dense series of ground control points were established on the port in strategic locations to ensure that accuracies of traditional methods of creating orthoimagery were met or exceeded. This project required a large image dataset (~3,600 photos) to be captured though a series of 24 flights, and processed through the Pix4D desktop program. The DJI Matrice 100 platform was used for image acquisition with a 16 megapixel Zenmuse X5 camera. Requested deliverables were generated within reasonable timeframes, with ground surface distances averaging around 3 cm.
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