Journal of KIBIM (한국BIM학회 논문집)

Korean Institute of Building Information Modeling (한국BIM학회)
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Analysis of overlap ratio for registration accuracy improvement of 3D point cloud data at construction sites

건설현장 3차원 점군 데이터 정합 정확성 향상을 위한 중첩비율 분석

  • 박수열 (한국교통대학교 철도융합시스템공학과) ;
  • 김석 (한국교통대학교 철도인프라시스템공학과)
  • Received : 2021.09.28
  • Accepted : 2021.09.29
  • Published : 2021.12.31
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Abstract

Comparing to general scanning data, the 3D digital map for large construction sites and complex buildings consists of millions of points. The large construction site needs to be scanned multiple times by drone photogrammetry or terrestrial laser scanner (TLS) survey. The scanned point cloud data are required to be registrated with high resolution and high point density. Unlike the registration of 2D data, the matrix of translation and rotation are used for registration of 3D point cloud data. Archiving high accuracy with 3D point cloud data is not easy due to 3D Cartesian coordinate system. Therefore, in this study, iterative closest point (ICP) registration method for improve accuracy of 3D digital map was employed by different overlap ratio on 3D digital maps. This study conducted the accuracy test using different overlap ratios of two digital maps from 10% to 100%. The results of the accuracy test presented the optimal overlap ratios for an ICP registration method on digital maps.

Keywords

Acknowledgement

본 연구는 국토교통부/국토교통과학기술진흥원의 지원으로 수행되었습니다 (스마트 건설기술 개발사업 : 과제번호 21SMIP-A156881-02).

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