Journal
REMOTE SENSING LETTERS
Volume 5, Issue 4, Pages 358-366Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/2150704X.2014.905728
Keywords
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Funding
- National Basic Research Program of China (973 Program) [2010CB951603]
- National Natural Science Foundation of China [41001270]
- Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration [SHUES2012A03]
- Fundamental Research Funds for the Central Universities of China
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The first global night-time light composite data from the Visible Infrared Imaging Radiometer Suite (VIIRS) day-night band carried by the Suomi National Polar-orbiting Partnership (NPP) satellite were released recently. So far, few studies have been conducted to assess the ability of NPP-VIIRS night-time light composite data to extract built-up urban areas. This letter aims to evaluate the potential of this new-generation night-time light data for extracting urban areas and compares the results with Defense Meteorological Satellite Program-Operational Linescan System (DMSP-OLS) data through a case study of 12 cities in China. The built-up urban areas of 12 cities are extracted from NPP-VIIRS and DMSP-OLS data by using statistical data from government as reference. The urban areas classified from Landsat 8 data are used as ground truth to evaluate the spatial accuracy. The results show the built-up urban areas extracted from NPP-VIIRS data have higher spatial accuracies than those from DMSP-OLS data for all the 12 cities. These improvements are due to the relatively high spatial resolution and wide radiometric detection range of NPP-VIIRS data. This study reveals that NPP-VIIRS night-time light composite data would provide a powerful tool for urban built-up area extraction at national or regional scale.
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