Journal of the Korean Association of Geographic Information Studies (한국지리정보학회지)

The Korean Association of Geographic Information Studies (한국지리정보학회)
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Accurate Spatial Information Mapping System Using MMS LiDAR Data

MMS LiDAR 자료 기반 정밀 공간 정보 매핑 시스템

  • CHOUNG, Yun-Jae (Research Institute for Spatial Information Technology, GEO C&I Co., Ltd.) ;
  • CHOI, Hyeoung-Wook (Research Institute for Spatial Information Technology, GEO C&I Co., Ltd.) ;
  • PARK, Hyeon-Cheol (Research Institute for Spatial Information Technology, GEO C&I Co., Ltd.)
  • 정윤재 ((주) 지오씨엔아이 공간정보기술연구소) ;
  • 최형욱 ((주) 지오씨엔아이 공간정보기술연구소) ;
  • 박현철 ((주) 지오씨엔아이 공간정보기술연구소)
  • Received : 2017.12.18
  • Accepted : 2018.01.15
  • Published : 2018.03.31
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Abstract

Mapping accurate spatial information is important for constructing three-dimensional (3D) spatial models and managing artificial facilities, and, especially, mapping road centerlines is necessary for constructing accurate road maps. This research developed a semi-automatic methodology for mapping road centerlines using the MMS(Mobile Mapping System) LiDAR(Light Detection And Ranging) point cloud as follows. First, the intensity image was generated from the given MMS LiDAR data through the interpolation method. Next, the line segments were extracted from the intensity image through the edge detection technique. Finally, the road centerline segments were manually selected among the extracted line segments. The statistical results showed that the generated road centerlines had 0.065 m overall accuracy but had some errors in the areas near road signs.

MMS(Mobile Mapping System) 자료를 이용한 정밀 공간 정보 매핑은 고정밀 3차원 지형 모델 구축, 시설물 관리를 위해 중요하며, 특히 도로 중앙선 매핑 작업은 정밀 도로 지도 구축을 위해 필요하다. 본 연구에서는 MMS LiDAR(Light Detection And Ranging) 자료를 이용하여 정밀 공간 정보인 도로 중앙선을 매핑 하는 반자동화 방법을 개발하였다. 우선 주어진 MMS LiDAR 자료를 기반으로 보간법을 이용하여 반사강도 영상을 제작하고, 에지 검출기를 이용하여 반사강도 영상으로부터 선형 세그먼트들을 추출하였다. 최종적으로 추출된 선형 세그먼트들 중에서 도로 중앙선 세그먼트를 수동으로 선택하였다. 추출된 도로 중앙선의 정확도 검증 결과, 0.065m의 정확도를 보여주었으며, 도로 중앙선이 도로 신호와 인접한 일부 지역에서 에러가 발견되었다.

Keywords

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