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http://dx.doi.org/10.14481/jkges.2021.22.2.35

Production and Accuracy Analysis of Topographic Status Map Using Drone Images  

Kim, Doopyo (Department of Civil Engineering, Dong-A University)
Back, Kisuk (School of Building & Environment Design, Ulsan College)
Kim, Sungbo (Department of Energy & Mineral Resources Engineering, Dong-A University)
Publication Information
Journal of the Korean GEO-environmental Society / v.22, no.2, 2021 , pp. 35-39 More about this Journal
Abstract
Photogrammetry using drone can produce high-resolution ortho image and acquire high-accuracy 3D information, which is useful. Therefore, this study attempted to determine the possibility of using drone-photogrammetry in park construction by producing a topographic map using drone-photogrammetry and analyzing the problems and accuracy generated during production. For this purpose, we created ortho image and DSM (digital surface model) using drone images and created topographic status map by vectorizing them. Accuracy was compared based on topographic status map by GPS (global positioning system) and TS (total station). The resulting of analyzing mean of the residuals at check points showed that 0.044 m in plane and 0.066 m in elevation, satisfying the tolerance range of 1/1,000 numerical maps, and result of compared lake size showed a difference of about 4.4%. On the other hand, it was difficult to obtain accurate height values for terrain in which existed vegetation when producing the topographic map, and in the case of underground buried objects, it is not possible to confirm it in the image, so direct spatial information acquisition was necessary. Therefore, it is judged that the topographic status map using drone photogrammetry can be efficiently constructed if direct spatial data acquisition is achieved for some terrain.
Keywords
Drone; Drone photogrammetry; Ortho image; Digital surface model(DSM);
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