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http://dx.doi.org/10.7780/kjrs.2021.37.5.3.7

Automatic Extraction of River Levee Slope Using MMS Point Cloud Data  

Kim, Cheolhwan (Dept. of Civil and Environmental Engineering, Yonsei University)
Lee, Jisang (Dept. of Civil and Environmental Engineering, Yonsei University)
Choi, Wonjun (Dept. of Civil and Environmental Engineering, Yonsei University)
Kim, Wondae (Dept. of Civil and Environmental Engineering, Inha Technical College)
Sohn, Hong-Gyoo (Dept. of Civil and Environmental Engineering, Yonsei University)
Publication Information
Korean Journal of Remote Sensing / v.37, no.5_3, 2021 , pp. 1425-1434 More about this Journal
Abstract
Continuous and periodic data acquisition must be preceded to maintain and manage the river facilities effectively. Adapting the existing general facilities methods, which include river surveying methods such as terrestrial laser scanners, total stations, and Global Navigation Satellite System (GNSS), has limitation in terms of its costs, manpower, and times to acquire spatial information since the river facilities are distributed across the wide and long area. On the other hand, the Mobile Mapping System (MMS) has comparative advantage in acquiring the data of river facilities since it constructs three-dimensional spatial information while moving. By using the MMS, 184,646,009 points could be attained for Anyang stream with a length of 4 kilometers only in 20 minutes. Levee points were divided at intervals of 10 meters so that about 378 levee cross sections were generated. In addition, the waterside maximum and average slope could be automatically calculated by separating slope plane form levee point cloud, and the accuracy of RMSE was confirmed by comparing with manually calculated slope. The reference slope was calculated manually by plotting point cloud of levee slope plane and selecting two points that use location information when calculating the slope. Also, as a result of comparing the water side slope with slope standard in basic river plan for Anyang stream, it is confirmed that inspecting the river facilities with the MMS point cloud is highly recommended than the existing river survey.
Keywords
Levee stability; LiDAR; Linear Regression; Mobile mapping system; Point cloud; River levee slope;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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