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REMOTE SENSING FOR LAND & RESOURCES    2016, Vol. 28 Issue (4) : 127-134     DOI: 10.6046/gtzyyg.2016.04.20
Technology Application |
A study of urban area extraction with the modified human settlement index
YANG Xiaonan, XU Yun, TIAN Yugang
School of Information Engineering, China University of Geosciences(Wuhan), Wuhan 430074, China
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Abstract  

Urban areas extraction at regional and global scales remains a challenge. To map urban areas using DMSP-OLS nighttime light data is limited due to the saturation of data values, especially in urban cores. Different nighttime facula sizes lead to different degrees of light overflow, which causes difficulty for quantitative analysis. Vegetation-rich areas are selected to avoid the impact of bare soil when visible-near infrared image is used to map urban. To solve the problems above, this paper proposes modified human settlement index (MHSI) on the basis of human settlement index (HSI), which is composed of DMSP-OLS nighttime light data and visible-near infrared image. The MHSI has been tested in China and USA and testified by using the China city statistical data and USA NLCD land cover data. The results indicate that MHSI can overcome the overflow problem effectively and discriminate urban areas from other feature types such as bare soil, water and vegetable. MHSI can extract the regional or global city areas completely, and the accuracy is better than that of HSI and MODIS land cover data sets.

Keywords subalpine forest vegetation      hyperspectral remote sensing      spectral similarity      upper reaches of the Minjiang River     
:  TP751.1  
Issue Date: 20 October 2016
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DAI Xiaoai
JIA Hujun
ZHANG Xiaoxue
WU Fenfang
GUO Shouheng
YANG Wunian
YANG Ye
Cite this article:   
DAI Xiaoai,JIA Hujun,ZHANG Xiaoxue, et al. A study of urban area extraction with the modified human settlement index[J]. REMOTE SENSING FOR LAND & RESOURCES, 2016, 28(4): 127-134.
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https://www.gtzyyg.com/EN/10.6046/gtzyyg.2016.04.20     OR     https://www.gtzyyg.com/EN/Y2016/V28/I4/127

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