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Estimation of Building Boundaries from Airborne LiDAR Data
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항공 라이다 데이터를 이용한 건물의 윤곽선 추정

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Type
Proceeding
Author
Yoo, Eun Jin (세종대학교) Lee, Dong-Cheon (세종대학교)
Journal
Korea Society of Surveying, Geodesy, Photogrammetry, and Cartography 한국측량학회 학술대회자료집 2016 한국측량학회 정기학술발표회
Published
2016.4
Pages
152 - 155 (4page)

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Estimation of Building Boundaries from Airborne LiDAR Data
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Abstract· Keywords

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Delineation of the accurate building boundaries is crucial to provide reliable spatial products such as digital maps and city models. In LiDAR(Light Detection and Ranging) data, physical boundaries of the building exist somewhere between outer-most points on the roofs and surrounding points on the ground. The positional accuracy of the boundaries is influenced by ground sampling distance, and only a few points could be obtained from the sidewalls because airborne laser systems collect data from near-nadir direction. This paper presents a method to estimate physical building boundaries from the LiDAR data. Firstly, outer-most points on the buildings were identified, then the nearest points on the ground were determined at every point along the outer-most boundaries. Secondly, Midpoints were computed using outer-most points and the nearest points. Finally, refinement processes including model key point detection and regularization were performed since the midpoints represent approximation of the physical boundaries.
#LiDAR data #Boundary detection #Model key point #Accuracy evaluation

Contents

Abstract
1. 서론
2. 연구방법 및 실험
3. 결과 및 분석
4. 결론
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