Aerospace Engineering and Technology (항공우주기술)

Korea Aerospace Research Institute (한국항공우주연구원)
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Accuracy of Precision Ground Coordinates Determination Using Inverse RPC in KOMPSAT Satellite Data

다목적실용위성(KOMPSAT)의 Inverse RPC 해석을 통한 정밀지상좌표 결정 정확도

  • Received : 2014.09.02
  • Accepted : 2014.11.01
  • Published : 2014.11.01
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Abstract

There are two types of Physical Model and RFM (Rational Function Model) is to determinate ground coordinates using KOMPSAT-2 and KOMPSAT-3 satellite data. Generally, RPCs(Rational Polynomial Coefficients) based on RFM is provided for users. This RPCs is to compute the ground coordinates to the image coordinates. If users produce ortho-image with provided RPCs is useful, directly compute the ground coordinates corresponding to image coordinates and check location accuracy etc. are difficult. In this study, a basic algorithm of inverse RPCs that calculates the image coordinates to ground coordinates, compute based on provided RPCs and evaluation of determinated ground coordinates using developed inverse RPCs were proposed.

다목적실용위성 2호/3호 위성자료를 이용하여 지상좌표를 결정하는 방법은 Physical Model과 RFM(Rational Function Model)의 두 가지 종류가 있다. 일반적으로 사용자에게 제공되는 모델은 RFM을 기반으로 한 RPCs(Rational Function Coefficients)이며, 이때 제공되는 RPCs는 지상좌표에서 영상좌표를 계산하는 계수이다. 사용자가 정사영상을 만들 경우에는 이 계수가 유용하나, 영상에서 임의의 영상기준점에 대응하는 지상좌표를 계산하거나, 위치정확도를 확인하기는 매우 어렵다. 본 논문은 다목적실용위성에서 제공되는 RPCs를 기반으로 Inverse RPCs를 해석하는 알고리즘과 해석된 Inverse RPCs를 기반으로 지상표고를 고려한 정밀 지상좌표 해석 알고리즘을 기술하고자 한다. 또한 Inverse RPCs의 해석된 정밀지상좌표 정확도와 Physical Model과의 차이를 계산하여 정확도를 평가하고자 한다.

Keywords

References

  1. Baltsavias, E., M. Pateraki, and L. Zhang., Radiometric and geometric evaluation of IKONOS GEO images and their use for 3-D building modeling, Proceedings of ISPRS Joint Workshop "High Resolution Mapping from Space", 2001.
  2. Chen, L., Lee, L., Rigorous generation of digital orthophotos from SPOT images. Photogrammetric Engineering & Remote Sensing, Vol. 59, No. 5, 1993, 655-661.
  3. Davis, C. H., and X. Wang., Planimetric Accuracy of IKONOS 1-m Panchromatic Image Products, Proceedings of ASPRS Annual Convention 2001 (CD-ROM), American Society for Photogrammetry and Remote Sensing, St. Louis, MO, April 25-27, 2001.
  4. Grodecki, J., IKONOS stereo feature extraction-RPC approach, Proceedings of ASPRS 2001, St. Louis, April 23-27, 2001.
  5. Grodecki, J., Dial, G., Block adjustment of high-resolution satellite images described by rational functions, PE&RS, Vol. 69, No. 1, 2003, pp.59-69.
  6. Grodecki, J., G. Dial, and J. Lutes., Mathematical model for 3D feature extraction from multiple satellite images described by RPCs, Proceedings of ASPRS 2004, Denver, May 23-28, 2004.
  7. Gupta, R. and R. I. Hartley,. Linear Pushbroom Cameras, IEEE Transactions on Pattern Analysis And Machine Intelligence, Vol. 19, No. 9, 1997, pp.963-975. https://doi.org/10.1109/34.615446
  8. Ji, M. and J. R. Jensen,. Continuous Piecewise Geometric Rectification for Airborne Multispectral Scanner Imagery, Photogrammetric Engineering & Remote Sensing, Vol. 66, No.2, 2000, pp.163-171.
  9. Lee, C., H. J. Theiss, J. S. Bethel and E. M. Mikhail,. Rigorous Mathematical Modeling of Airborne Pushbroom Imaging System, Photogrammetric Engineering & Remote Sensing, Vol. 66, No. 4, 2000, pp.385-392.
  10. Li, R., Potential of High-Resolution Satellite Imagery for National Mapping Products, Photogrammetric Engineering & Remote Sensing, Vol. 64, No. 2, 1998, pp.1165-1169.
  11. OpenGIS Consortium, The OpenGIS Abstract Specification - Topic 7: The Earth Imagery Case, http://www.opengis.org/public/abstract/99-107.pdf., 1999.
  12. Tao, V., Hu, Y., A comprehensive study on the rational function model for photogrammetric processing, PE&RS, Vol. 67, No. 12, 2001a, pp.1347-1357.
  13. Yang, X.., Accuracy of rational function approximation in photogrammetry, ASPRS Annual Conference, May 22-26, 2000, pp.11.
  14. Http://eng.kari.re.kr/sub01_01_02_02.htmp
  15. DooChun, Seo, JaeHun Jung, HeaSun Cho, GiByeong Hong, SunGu Lee., KOMPSAT-3 Geometric Quality Assessment, 2014 ACRS Proceeding, 2013.
  16. 서두천, 양지연, 임효숙, 이창노., 고해상도 인공위성영상의 정사보정을 위한 지상좌표 결정 정확도 비교, 2009 공동추계학술 대회 논문집, 2009.