DEM Extraction from KOMPSAT-1 EOC Stereo Images and Accuracy Assessment

KOMPSAT-1 EOC입체 영상을 이용한 DEM생성과 정확도 검증

  • 임용조 (한국과학기술원 인공위성연구센터) ;
  • 김태정 (한국과학기술원 인공위성연구센터) ;
  • 김준식 (한국과학기술원 전자공학과)
  • Published : 2002.04.01

Abstract

We carried out accuracy assessment for DEM extraction from the KOMPSAT-1 EOC stereo images over Daejeon and Nonsan in Korea. DEM generation divided into two parts. One is camera modeling and the other stereo matching. We used Orun & Natarajan's(1994) model and Gupta & Hartley's(1997) model in the camera modeling step and checked the possibility using Orun & Natarajan and Gupta & Hartley's models in EOC stereo pairs. For stereo matching, we used an algorithms developed in-house for SPOT images and showed that this algorithm could work with EOC images. Using these algorithms, DEMs were successfully generated from EOC images. The comparison of DEM from EOC Images with a DEM from SPOT Images showed that EOC could be used for high-accuracy DEM generation.

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