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The Relationship between Weathering Degree and Reflectance of Laser Scanner Considering RGB Value

RGB 값을 고려한 레이저 스캐너 반사율과 풍화도의 관계에 대한 연구

  • Yoo, Wan-Kyu (Geotechnical Engineering Research Institute, Korea Institute of Civil Engineering and Building Technology) ;
  • Kim, Jinhwan (Geotechnical Engineering Research Institute, Korea Institute of Civil Engineering and Building Technology) ;
  • Kim, Tae-Ho (NEXGEO Inc.)
  • 유완규 (한국건설기술연구원 지반연구소) ;
  • 김진환 (한국건설기술연구원 지반연구소) ;
  • 김태호 ((주)넥스지오)
  • Received : 2015.07.15
  • Accepted : 2015.10.08
  • Published : 2015.10.31

Abstract

Recently, to improve manual mapping method, digital mapping using high-resolution camera and laser scanner has increasingly attracted attention and the relevant study is reportedly on the rise. In this study, laboratory and field test which are intended to quantitatively analyze and estimate the weathering degree which is one of the engineering characteristics of tunnel face using laser scanner that integrates high-solution imaging technique have been conducted. In a bid to analyze correlation between reflectance of laser scanner and weathering degree, investigation of the factors influencing on reflectance was carried out. And to minimize the effect on RGB value which is one the critical influential factors on reflectance, modification equation obtained from lab test was proposed. Modification equation proposed in this study was verified by comparing the values before and after correction using the data obtained by scanning. Consequently, weathering index estimated by modified reflectance appeared very similar with dominant weathering degree and weathering ratio monitored at the field.

Acknowledgement

Grant : 터널시공 중 디지털 맵핑을 통한 온라인 암판정 기술 및 운영모델 개발

Supported by : 국토교통과학기술진흥원

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