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논문 기본 정보

자료유형
학술저널
저자정보
Bhang, Kon Joon (Kumoh National Institute of Technology) Lee, Jin-Duk (Kumoh National Institute of Technology)
저널정보
한국측량학회 한국측량학회지 한국측량학회지 제35권 제1호
발행연도
2017.2
수록면
23 - 30 (8page)

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초록· 키워드

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NDVI (Normalized Difference Vegetation Index) plays an important role in surface land cover classification and LST (Land Surface Temperature Extraction). Its characteristics do not full carry the information of the surface cover typically in urban areas even though it is widely used in analyses in urban areas as well as in vegetation. However, abnormal NDVI values are frequently found in urban areas. We, therefore, examined NDVI values on whether NDVI is appropriate for LST and whether there are considerations in NDVI analysis typically in urban areas because NDVI is strongly related to the surface emissivity calculation. For the study, we observed the influence of the surface settings (i.e., geometric shape and color) on NDVI values in urban area and transition features between three land cover types, vegetation, urban materials, and water. Interestingly, there were many abnormal NDVI values systematically derived by the surface settings and they might influence on NDVI and eventually LST. Also, there were distinguishable transitions based on the mixture of three surface materials. A transition scenario was described that there are three transition types of mixture (urban materialvegetation, urban material-water, and vegetation-water) based on the relationship of NDVI and LST even though they are widely distributed.

목차

Abstract
1. Introduction
2. Datasets and Data Processing
3. NDVI characteristics of the urban covers
4. Transition of NDVI by Mixing
5. Conclusion
References

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