Korean Journal of Remote Sensing (대한원격탐사학회지)

Korean Society of Remote Sensing (대한원격탐사학회)
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Calibration of a Rotating Stereo Line Camera System for Indoor Precise Mapping

실내 정밀 매핑을 위한 회전식 스테레오 라인 카메라 시스템의 캘리브레이션

  • Oh, Sojung (Department of Geoinformatics, University of Seoul) ;
  • Shin, Jinsoo (Department of Geoinformatics, University of Seoul) ;
  • Kang, Jeongin (Department of Geoinformatics, University of Seoul) ;
  • Lee, Impyeong (Department of Geoinformatics, University of Seoul)
  • 오소정 (서울시립대학교 공간정보공학과) ;
  • 신진수 (서울시립대학교 공간정보공학과) ;
  • 강정인 (서울시립대학교 공간정보공학과) ;
  • 이임평 (서울시립대학교 공간정보공학과)
  • Received : 2015.03.27
  • Accepted : 2015.04.23
  • Published : 2015.04.30
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Abstract

We propose a camera system to acquire indoor stereo omni-directional images and its calibration method. These images can be utilized for indoor precise mapping and sophisticated imagebased services. The proposed system is configured with a rotating stereo line camera system, providing stereo omni-directional images appropriate to stable stereoscopy and precise derivation of object point coordinates. Based on the projection model, we derive a mathematical model for the system calibration. After performing the system calibration, we can estimate object points with an accuracy of less than ${\pm}16cm$ in indoor space. The proposed system and calibration method will be applied to indoor precise 3D modeling.

본 연구는 실내 정밀 매핑과 정교한 영상 기반 서비스에 활용 가능한 실내의 입체 전방위 영상을 취득하는 시스템과 이에 대한 캘리브레이션 방법을 제안한다. 제안된 시스템은 회전식 스테레오 라인 카메라 방식으로 구성되며, 안정적인 입체시와 객체점의 정밀한 결정에 적합한 입체 전방위 영상을 제공한다. 또한, 제안된 시스템의 투영모델을 기반으로 캘리브레이션을 위한 수학적 모델을 도출한다. 이를 통해 캘리브레이션을 수행하여, 실내 공간에 대해 ${\pm}16cm$ 이내의 정확도로 객체점을 추정할 수 있었다. 제안된 시스템과 캘리브레이션 방법은 실내의 정밀한 3차원 모델링에 활용될 것이다.

Keywords

References

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