Korean Journal of Remote Sensing (대한원격탐사학회지)

Korean Society of Remote Sensing (대한원격탐사학회)
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Evaluation of DSM Accuracy Based on UAS with Respect to Camera Calibration Methods and Application of Interior Orientation Parameters

카메라 검정 방법과 내부표정 요소 적용에 따른 UAS 기반의 DSM 정확도 평가

  • Yu, Jae Jin (Korea Environmental Information Center, Korea Environment Institute) ;
  • Son, Seung-Woo (Korea Environmental Information Center, Korea Environment Institute) ;
  • Park, Hyun-Su (Department of Geography, Kongju National University) ;
  • Jeon, Hyung-Jin (Korea Environmental Information Center, Korea Environment Institute) ;
  • Yoon, Jeong-Ho (Korea Environmental Information Center, Korea Environment Institute)
  • 유재진 (한국환경정책.평가연구원 국토환경정보센터) ;
  • 손승우 (한국환경정책.평가연구원 국토환경정보센터) ;
  • 박현수 (공주대학교 지리학과) ;
  • 전형진 (한국환경정책.평가연구원 국토환경정보센터) ;
  • 윤정호 (한국환경정책.평가연구원 국토환경정보센터)
  • Received : 2017.07.31
  • Accepted : 2017.09.25
  • Published : 2017.10.30
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Abstract

In the present study, the interior orientation parameters were computed by using various kinds of methods. Five DSMs (Digital Surface Models) in total were produced by applying interior orientation parameters to the image processing, and the accuracy was evaluated. In order to use interior orientation parameters as independent variables of DSM accuracy, flight parameters and exterior orientation parameters that can affect the accuracy of DSM were set to be the only fixed variables. From the results of the present study, the RMSE of campaign 3-2 was found to be 0.0305 m, which was the most favorable result. Thus, it is advisable to produce DSM by adjusted interior parameters after figuring out the interior orientation parameters using a camera calibration program at laboratory environment.

본 연구에서는 각기 다른 방법으로 내부표정 요소를 산출하였다. 내부표정 요소를 영상처리 과정에 적용하여 총 5개의 DSM(Digital Surface Models)을 제작한 뒤 정확도를 평가하였다. 내부표정 요소를 DSM 정확도의 독립변수로 활용하기 위해 DSM의 정확도에 영향을 줄 수 있는 비행요소와 외부표정 요소를 단일 고정변수로 설정하였다. 연구결과, campaign 3-2의 RMSE가 0.0305 m로 가장 양호한 결과를 보였다. 따라서 실험실 환경에서 카메라 검정 시스템을 이용하여 내부표정 요소를 확인한 뒤, 최적화를 통해 획득한 수정된 내부표정 요소를 이용해 DSM을 제작하는 것이 가장 정확도가 높은 DSM을 구축하는 방법으로 판단된다.

Keywords

References

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