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http://dx.doi.org/10.7848/ksgpc.2018.36.4.223

Accuracy Analysis of Cadastral Control Point and Parcel Boundary Point by Flight Altitude Using UAV  

Kim, Jung Hoon (Dept. of Daegu-Kyungpook Regional Headquarter, Korea Land and Geospatial InformatiX Corporation)
Kim, Jun Hyun (Dept. of Spatial Information Science, Kyungpook National University)
Publication Information
Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography / v.36, no.4, 2018 , pp. 223-233 More about this Journal
Abstract
In this study was classified the cadastral control points and parcel boundary points into 40m, 100m by flight altitude of UAV (Unmanned Aerial Vehicle) which compared the coordinates extracted from the orthophoto with the parcel boundary point coordinates by GNSS (Global Navigation Satellite System) ground survey. As a results of this study, first, in the spatial resolution analysis that the average error of the orthoimage by flight altitude were 0.024m at 40m, and 0.034m at 100m which were higher 40m than 100m for spatial resolution of orthophotos and position accuracy. Second, in order to analyze the accuracy of image recognition by airmark of flight altitude that was divided into three cases of nothing, green, and red of RMSE (Root Mean Square Error) were X=0.039m, Y=0.019m and Z=0.055m, the highest accuracy. Third, the result of the comparison between orthophotos and field survey results that showed the total RMSE error of the cadastral control points were X=0.029m, Y=0.028m, H=0.051m, and the parcel boundary points were X=0.041m, Y=0.030m. In conclusion, based on the results of this study, it is expected that if the average error of flight altitude is limited to less than 0.05m in the legal regulations related to orthophotos for cadastral surveying, it will be an economical and efficient method for cadastral survey as well as spatial information acquisition.
Keywords
Cadastral Control Points; Parcel Boundary Points; Orthophotos; Flight Altitude;
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Times Cited By KSCI : 7  (Citation Analysis)
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