3D Surface Model Reconstruction of Aerial LIDAR(LIght Detection And Ranging) Data

Considering Land-cover Type and Topographical Characteristic

Chul-Chul Song* ･Woo-Kyun Lee** ･Hoe-Seong Jeong*** ･Kwan-Kyu Lee****

 

*고려대학교 생명과학대학 환경GIS/RS센터(ccsong@hanmail.net)
**고려대학교 생명과학대학 환경생태공학부(leewk@korea.ac.kr)
***환경정책평가연구원(hsjeong@kei.re.kr)
****강원대학교 산림환경과학대학 산림경영․조경학부(gglee@kangwon.ac.kr)

 

ABSTRACT : Usually in South Korea, land cover type and topographic undulation are frequently changed even in a narrow area. However, most of researches using aerial LIDAR (LIght Detection And Ranging) data in abroad had been acquired in the study areas to be changed infrequently.
This research was performed to explore reconstruction methodologies of 3D surface models considering the distribution of land cover type and topographic undulation.
Composed of variously undulatory forests, rocky river beds and man-made land cover such as streets, trees, buildings, parking lots and so on, an area was selected for the research. First of all, the area was divided into three zones based on land cover type and topographic undulation using its aerial ortho-photo. Then, aerial LIDAR data was clipped by each zone and different 3D modeling processes were applied to each clipped data before integration of
each models and reconstruction of overall model.
These kinds of processes might be effectively applied to landscape management, forest inventory and digital map composition. Besides, they would be useful to resolve less- or over-extracted problems caused by simple rectangle zoning when an usual data processing of aerial LIDAR.
Keywords : aerial LIDAR(LIght Detection And Ranging), land cover, topographic undulation, 3D surface model, reconstruction