• Title/Summary/Keyword: CPS modeling

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Comparison and Analysis of Matching DEM Using KOMPSAT-3 In/Cross-track Stereo Pair (KOMPSAT-3 In/Cross-track 입체영상을 이용한 매칭 DEM 비교 분석)

  • Oh, Kwan-Young;Jeong, Eui-Cheon;Lee, Kwang-Jae;Kim, Youn-Soo;Lee, Won-Jin
    • Korean Journal of Remote Sensing
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    • v.34 no.6_3
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    • pp.1445-1456
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    • 2018
  • The purpose of this study is to compare the quality and characteristics of matching DEMs by using KOMPSAT-3 stereo pair capture in in-track and cross-track. For this purpose, two stereo pairs of KOMPSAT-3 were collected that were taken in the same area. The two stereo pairs have similar stereo geometry elements such as B/H, convergence angle. Sensor modeling for DEM production was performed with RFM affine calibration using multiple GCPs. The GCPs used in the study were extracted from the 0.25 m ortho-image and 5 meter DEM provided by NGII. In addition, matching DEMs were produced at the same resolution as the reference DEMs for a comparison analysis. As a result of the experiment, the horizontal and vertical errors at the CPs indicated an accuracy of 1 to 3 pixels. In addition, the shapes and accuracy of two DEMs produced in areas where the effects of natural or artificial surface land were low were almost similar.