Evaluation of NPP-VIIRS nighttime light composite data for extracting built-up urban areas

题名：Evaluation of NPP-VIIRS nighttime light composite data for extracting built-up urban areas
领域：Remote Sensing 三区
来源：Remote Sensing Letters

发表年代：2014年
作者：Shi Kaifang, Huang Chang, Yu Bailang*‚ Yin Bing, Huang Yixiu, Wu Jianping

摘要：The first global night-time light composite data from the Visible Infrared ImagingRadiometer Suite (VIIRS) day–night band carried by the Suomi National Polar-orbitingPartnership (NPP) satellite were released recently. So far, few studies have beenconducted to assess the ability of NPP-VIIRS night-time light composite data to extractbuilt-up urban areas. This letter aims to evaluate the potential of this new-generationnight-time light data for extracting urban areas and compares the results with DefenseMeteorological Satellite Program–Operational Linescan System (DMSP-OLS) datathrough a case study of 12 cities in China. The built-up urban areas of 12 cities areextracted from NPP-VIIRS and DMSP-OLS data by using statistical data from governmentas reference. The urban areas classified from Landsat 8 data are used as groundtruth to evaluate the spatial accuracy. The results show the built-up urban areasextracted from NPP-VIIRS data have higher spatial accuracies than those fromDMSP-OLS data for all the 12 cities. These improvements are due to the relativelyhigh spatial resolution and wide radiometric detection range of NPP-VIIRS data. Thisstudy reveals that NPP-VIIRS night-time light composite data would provide a powerfultool for urban built-up area extraction at national or regional scale.