Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography (한국측량학회지)

Korean Society of Surveying, Geodesy, Photogrammetry and Cartography (한국측량학회)
권호 표지

Evaluation for Geometric Calibration Accuracy of Zoom-lens CCD Camera

줌렌즈 CCD 카메라의 기하학적 검정 정확도 평가

  • Published : 2003.09.01
Download PDF
⟨ Previous Next ⟩

Abstract

Zoom lenses CCD(Charge Coupled Device) cameras have many desirable features but appear to be geometrically unstable and diffcult to calibrate. It is well blown that the zooming camera parameters change with zoom lens position. This paper presents a comparative study of two approaches, namely, DLT(Direct Linear Transformation) introduced by Abdel-Aziz and Karara and the model proposed by Tsai, to evaluate the camera parameters of zoom lenses CCD camera and 3D positioning accuracy. As a result, the accuracy for 3D positioning using Tsai and DLT model is similar in both methods when the set of GCPs and the object are arranged in the same space. However, Tsai model is more stable than DLT in the case that the object is apart from the set of GCPs. Also, the further study for the parameters optimization of conventional DLT is needed to improve accuracy for 3D positioning.

줌 렌즈 CCD 카메라는 사용상 많은 장점을 갖고 있으나 기하학적으로 불안정하여 카메라 검정이 어려운 문제점을 가지고 있으며 이것은 일반적으로 알려진 것과 같이 줌 카메라의 변수가 줌 위치에 따라 변화하기 때문이다. 본 연구에서는 줌 렌즈 CCD카메라의 변수계산과 3차원 위치정확도를 평가하기 위하여 Abdel-Aziz와 Karara가 제안한 DLT기법과 Tsai 기법을 비교분석하였다. 그 결과, 기준점을 대상물이 위치한 공간에 함께 배치할 경우에 Tsai와 DLT모델식에 의한 3차원 위치정확도는 두 방법 모두 비슷하였으나, 기준점과 대상물이 이격되는 경우 DLT에 비해 Tsai가 더 안정적임을 알 수 있었다. 따라서, 그 동안 많이 사용해 온 DLT기법의 변수 최적화를 위한 추가적인 연구가 3차원 위치 정확도 향상을 위해 필요하다고 판단된다.

Keywords

References

  1. 대한토목학회논문집 v.18 no.Ⅲ-2 카메라와 데오도라이트를 이용한 실시간 3차원 위치결정시스템 개발 유환희;조해용;송영선
  2. 한국측량학회지 v.20 no.1 비행선촬영시스템을 이용한 영상지도 제작 유환희;제정형;김성삼
  3. 2002년도 학술발표회 논문집 항공 비디오 영상의 Geo-Correction 이학균;제정형;김기열;유환희
  4. International Archives of Photogrammetry and Remote Sensing v.ⅩⅩⅩⅢ no.B4 Automated Calibration of a Zoom Lens CCD Image Syster for VideoGrammetry Chen,D.B.;Huang,Y.D.
  5. Image and Visio Computing v.19 no.14 Simple and Efficient Method of Calibrating a Motorized Zoom Lens Chen,Y.S.;Shin,S.W.;Hung,Y.P.;Fuh,C.S. https://doi.org/10.1016/S0262-8856(01)00069-5
  6. ECCV Lens distortion recovery for accurate sequential structure and motion recovery Comelis,K.;Pollefeys,M.;Gool,L.V.
  7. proceedings of the IEEE International Geoscience and Remote Sensing Symposium Linear infrastructure mapping using airborne video imagery and subsequent integration into a GIS Dare,P.M.;Fraser,C.S.
  8. proceedings of the ASPRS Annual Conference Linear infrastructure mapping using airborne video imagery Dare,P.M.;Fraser,C.S.;Judd,M.
  9. IEEE Transactions of Pattern Analysis and Machine Intelligence v.18 no.11 Some aspects of Zoom Lens Camera Calibration Mengxizng,L;Lavest,J.M. https://doi.org/10.1109/34.544080
  10. Pattern Recognition v.35 A Comparative review of camera calibrating methods with accuracy evaluation Salvi,J.;Armangue,X.;Batle,J. https://doi.org/10.1016/S0031-3203(01)00126-1
  11. IEEE Journal of Robotics and Automation A versatile Camera Calibration Technique for High-Accuracy 3D Machine Vision Metrology Using Off-the-Shelf TV Cameras and Lenes Tsai,R.Y.
  12. International Journal of Remote Sensing v.20 no.10 Video Strip Mosaicking:a two-dimensional approach by convergent image bridging Um,J.S.;Wright,R. https://doi.org/10.1080/014311699212326
  13. IEEE Transactions on Pattern Analysis and Machine Intelligence v.14 no.10 Camera Calibration with Distortion Models and Accuracy Evaluation Weng,J.;Cohen,P.;Herniou,M. https://doi.org/10.1109/34.159901
  14. PE&RS v.61 no.1 Geomeric Calibration of Zoom Lenes for Computer Vision Metrology Willey,A.G.;Wong,K.W.
  15. Ph D dissertation, Canegie Mellon University Modeling and Calibration of Automated Zoom Lenses Willson,R.G.