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http://dx.doi.org/10.5050/KSNVE.2014.24.12.985

Extraction of Three-dimensional Hybrid City Model based on Airborne LiDAR and GIS Data for Transportation Noise Mapping  

Park, Taeho (Department of Energy and Environmental System Engineering, University of Seoul)
Chun, Bumseok (Center for Geographic Information System, Georgia Institute of Technology)
Chang, Seo Il (Department of Environmental Engineering, University of Seoul / Center for Geographic Information System, Georgia Institute of Technology)
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.24, no.12, 2014 , pp. 985-991 More about this Journal
Abstract
The combined method utilizing airborne LiDAR and GIS data is suggested to extract 3-dimensional hybrid city model including roads and buildings. Combining the two types of data is more efficient to estimate the elevations of various types of roads and buildings than using either LiDAR or GIS data only. This method is particularly useful to model the overlapped roads around the so called spaghetti junction. The preliminary model is constructed from the LiDAR data, which can give wrong information around the overlapped parts. And then, the erratic vertex points are detected by imposing maximum vertical grade allowable on the elevated roads. For the purpose of efficiency, the erratic vertex points are corrected through linear interpolation method. To avoid the erratic treatment of the LiDAR data on the facades of buildings 2 meter inner-buffer zone is proposed to efficiently estimate the height of a building. It is validated by the mean value(=5.26 %) of differences between estimated elevations on 2 m inner buffer zone and randomly observed building elevations.
Keywords
Noisemap; LiDAR; GIS; Digital Surface Model; Digital Elevation Model;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
연도 인용수 순위
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