한국농공학회논문집 (Journal of The Korean Society of Agricultural Engineers)

  • 제49권5호
  • /
  • Pages.67-77
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  • 2007
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  • 1738-3692(pISSN)
  • /
  • 2093-7709(eISSN)
한국농공학회 (The Korean Society of Agricultural Engineers)
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시계열 MODIS 영상을 이용한 논 분류와 지형학적 인자에 따른 불확실성 분석

An Uncertainty Analysis of Topographical Factors in Paddy Field Classification Using a Time-series MODIS

  • 윤성한 (서울대학교 생태조경.지역시스템공학부 대학원) ;
  • 최진용 (서울대학교 생태조경.지역시스템공학부) ;
  • 유승환 (서울대학교 생태조경.지역시스템공학부 대학원) ;
  • 장민원 (서울대학교 농업생명과학연구원)
  • 발행 : 2007.09.30
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초록

The images of MODerate resolution Imaging Spectroradiometer (MODIS) that provide wider swath and shorter revisit frequency than Land Satellite (Landsat) and Satellite Pour I' Observation de la Terre (SPOT) has been used fer land cover classification with better spatial resolution than National Oceanic and Atmosphere Administration/Advanced Very High Resolution Radiometer (NOAA/AVHRR)'s images. Due to the advantages of MODIS, several researches have conducted, however the results for the land cover classification using MODIS images have less accuracy of classification in small areas because of low spatial resolution. In this study, uncertainty of paddy fields classification using MODIS images was conducted in the region of Gyeonggi-do and the relation between this uncertainty of estimating paddy fields and topographical factors was also explained. The accuracy of classified paddy fields was compared with the land cover map of Environmental Geographic Information System (EGIS) in 2001 classified using Landsat images. Uncertainty of paddy fields classification was analyzed about the elevation and slope from the 30m resolution Digital Elevation Model (DEM) provided in EGIS. As a result of paddy classification, user's accuracy was about 41.5% and producer's accuracy was 57.6%. About 59% extracted paddy fields represented over 50 uncertainty in one hundred scale and about 18% extracted paddy fields showed 100 uncertainty. It is considered that several land covers mixed in a MODIS pixel influenced on extracted results and most classified paddy fields were distributed through elevation I, II and slope A region.

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참고문헌

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