Journal of the Korean Association of Geographic Information Studies (한국지리정보학회지)

The Korean Association of Geographic Information Studies (한국지리정보학회)
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Analysis of Surface Temperature Characteristics by Land Surface Fabrics Using UAV TIR Images

UAV 열적외 영상을 활용한 피복재질별 표면온도 특성 분석

  • SONG, Bong-Geun (Disaster Scientific Investigation Division, National Disaster of Management Institute) ;
  • KIM, Gyeong-Ah (Dept. of Environmental Engineering, Changwon National University) ;
  • SEO, Kyeong-Ho (Dept. of Eco-friendly Offshore Plant FEED Engineering of Changwon National University) ;
  • LEE, Seung-Won (Dept. of Environmental Engineering, Changwon National University) ;
  • PARK, Kyung-Hun (School of Civil, Environmental and Chemical Engineering, Changwon National University)
  • 송봉근 (국립재난안전연구원 재난원인조사실) ;
  • 김경아 (창원대학교 환경공학과) ;
  • 서경호 (창원대학교 친환경해양플랜트FEED공학과) ;
  • 이승원 (창원대학교 환경공학과) ;
  • 박경훈 (창원대학교 토목환경화공융합공학부)
  • Received : 2018.09.12
  • Accepted : 2018.09.30
  • Published : 2018.09.30
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Abstract

The purpose of this study was to analyze the surface temperature of surface fabrics using UAV TIR images, to mitigate problems in the thermal environment of urban areas. Surface temperature values derived from UAV images were compared with those measured in-situ during the similar period as when the images were taken. The difference in the in-situ measured and UAV image derived surface temperatures is the highest for gray colored concrete roof fabrics, at $17^{\circ}C$, and urethane fabrics show the lowest difference, at $0.3^{\circ}C$. The experiment power of the scatter plot of in-situ measured and UAV image derived surface temperatures was 63.75%, indicating that the correlation between the two is high. The surface fabrics with high temperature are metal roofs($48.9^{\circ}C$), urethane($43.4^{\circ}C$), and gray colored concrete roofs($42.9^{\circ}C$), and those with low temperature are barren land($30.2^{\circ}C$), area with trees and lawns($30.2^{\circ}C$), and white colored concrete roofs($34.9^{\circ}C$). These results show that accurate analysis of the thermal characteristics of surface fabrics is possible using UAV images. In future, it will be necessary to increase the usability of UAV images via comparison with in-situ data and linkage to satellite imagery.

본 연구는 도시 열환경 문제를 개선하기 위해 UAV 영상 표면온도 자료를 이용하여 피복재질별 표면온도 특성을 분석하였다. 그리고 UAV 영상 표면온도를 유사한 시기에 측정된 현장 실측 표면온도와 비교하였다. UAV 영상과 실측 표면온도와 비교한 결과, 가장 큰 차이를 보이는 피복재질은 회색 콘크리트 지붕 재질로 약 $7.8^{\circ}C$로 나타났다. 우레탄은 $0.3^{\circ}C$ 차이로 가장 적었다. 산점도를 분석한 결과 설명력이 63.75%로 상관성이 높은 것으로 분석되었다. 표면온도가 가장 높은 재질은 금속지붕으로 $48.9^{\circ}C$로 나타났고, 우레탄($43.4^{\circ}C$), 회색 콘크리트 지붕($42.9^{\circ}C$) 순이었다. 표면온도가 낮은 재질은 나지($30.2^{\circ}C$), 수목 및 잔디($30.2^{\circ}C$), 흰색 콘크리트 지붕($34.9^{\circ}C$)이었다. UAV 영상 표면온도 자료는 피복재질의 열적특성을 정밀하게 분석 가능하였다. 향후, 실측자료와의 비교를 통해 UAV 영상의 정확성 검 보정과 위성영상과 연계하여 UAV 영상 자료의 활용성을 확대할 필요가 있다.

Keywords

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