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Damage Analysis and Accuracy Assessment for River-side Facilities using UAV images
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 Title & Authors
Damage Analysis and Accuracy Assessment for River-side Facilities using UAV images
Kim, Min Chul; Yoon, Hyuk Jin; Chang, Hwi Jeong; Yoo, Jong Su;
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It is important to analyze the exact damage information for fast recovery when natural disasters cause damage on river-side facilities such as dams, bridges, embankments etc. In this study, we shows the method to effectively damage analysis plan using UAV(Unmanned aerial vehicle) images and accuracy assessment of it. The UAV images are captured on area near the river-side facilities and the core methodology for damage analysis are image matching and change detection algorithm. The result(point cloud) from image matching is to construct 3-dimensional data using by 2-dimensional images, it extracts damage areas by comparing the height values on same area with reference data. The results are tested absolute locational precision compared by post-processed aerial LiDAR data named reference data. The assessment analysis test shows our matching results 10-20 centimeter level precision if external orientation parameters are very accurate. This study shows suggested method is very useful for damage analysis in a large size structure like river-side facilities. But the complexity building can`t apply this method, it need to the other method for damage analysis.
UAV Image;Image Matching;Change Detection;Damage Analysis;
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