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http://dx.doi.org/10.11108/kagis.2011.14.1.084

Mapping Man-Made Levee Line Using LiDAR Data and Aerial Orthoimage  

Choung, Yun-Jae (Institute of Spatial Information Technology Research, U&GIT Co., Ltd.)
Park, Hyen-Cheol (Institute of Spatial Information Technology Research, GEO C&I Co., Ltd.)
Chung, Youn-In (Dept. of Civil Engineering, Keimyung University)
Jo, Myung-Hee (Dept. of Satellite Geoinformatics Engineering, Kyungil University)
Publication Information
Journal of the Korean Association of Geographic Information Studies / v.14, no.1, 2011 , pp. 84-93 More about this Journal
Abstract
Levee line mapping is critical to the protection of environments in river zones, the prevention of river flood and the development of river zones. Use of the remote sensing data such as LiDAR and aerial orthoimage is efficient for river mapping due to their accessibility and higher accuracy in horizontal and vertical direction. Airborne laser scanning (LiDAR) has been used for river zone mapping due to its ability to penetrate shallow water and its high vertical accuracy. Use of image source is also efficient for extraction of features by analysis of its image source. Therefore, aerial orthoimage also have been used for river zone mapping tasks due to its image source and its higher accuracy in horizontal direction. Due to these advantages, in this paper, research on three dimensional levee line mapping is implemented using LiDAR and aerial orthoimage separately. Accuracy measurement is implemented for both extracted lines generated by each data using the ground truths and statistical comparison is implemented between two measurement results. Statistical results show that the generated 3D levee line using LiDAR data has higher accuracy than the generated 3D levee line using aerial orthoimage in horizontal direction and vertical direction.
Keywords
LiDAR; Three Dimensional Levee Line; Break Line; Delaunay Triangle Mesh; Normal Vector; Aerial Orthoimage; Digital Image Processing; Mean Shift Segmentation; DSM;
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