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Satellite Image Processing Software for Value-Added Products

  • Lee, Hae-Yeoun (Department of Computer Science) ;
  • Park, Won-Kyu (Satellite Technology Research Center Korea Advanced Institute of Science and Technology) ;
  • Kim, Seung-Bum (Satellite Technology Research Center Korea Advanced Institute of Science and Technology) ;
  • Kim, Tae-Jung (Satellite Technology Research Center Korea Advanced Institute of Science and Technology) ;
  • Yoon, Tae-Hun (Satellite Technology Research Center Korea Advanced Institute of Science and Technology) ;
  • Shin, Dong-Seok (Satellite Technology Research Center Korea Advanced Institute of Science and Technology) ;
  • Lee, Heung-Kyu (Department of Computer Science)
  • Published : 1999.12.01

Abstract

To extract value-added products which are important in scientific area and practical life, e.g. digital elevation models, ortho-rectified images and geometric corrected images, Satellite Technology Research Center at Korea Advanced Institute of Science and Technology has developed a satellite image processing software called "Valadd-Pro". In this paper, "Valadd-Pro" software is briefly introduced and its main components such as precise geometric correction, ortho-rectification and digital elevation model extraction component are described. The performance of "Valadd-Pro" software was assessed on 10m resolution 6000 $\times$ 6000 SPOT panchromatic images (60km $\times$ 60km) using ground control points from GPS measurements. The height accuracy was measured by comparing our results with 100m resolution $DTEDs^{1)}$ produced by USGS and 60m resolution DEMs generated from digitized contours produced by National Geography Institute. Also, to show the superior performance of "Valadd-Pro" software, we compared the performance with that of commonly used PCI$\circledR$ commercial software. Based on the results, the geometric correction of "Valadd-Pro" software needs fewer ground control points than that of PCI$\circledR$ software and the ortho-rectification of "Valadd-Pro" software shows similar performance to that of PCI$\circledR$ software. In the digital elevation model extraction, "Valadd-Pro" software is two times more accurate and four times faster than PCI$\circledR$ software.ccurate and four times faster than PCI$\circledR$ software.

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