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首页> 外文期刊>International journal of applied earth observation and geoinformation >Evaluation of Luojia 1-01 nighttime light imagery for impervious surface detection: A comparison with NPP-VIIRS nighttime light data
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Evaluation of Luojia 1-01 nighttime light imagery for impervious surface detection: A comparison with NPP-VIIRS nighttime light data

机译：罗杰1-01夜间光图像对不透水表面检测的评价：与NPP-VIIRS夜间光数据的比较

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摘要

Impervious surface detection is significant to urban dynamic monitoring and environment management. One of the most effective approaches to evaluating the impervious surface is the use of nighttime light imagery. However, little work on this subject was carried out with the new generation nighttime light data from Luojia 1-01 satellite, which has a finer spatial resolution than the predecessors such as the nightlight data from the Visible Infrared Imaging Radiometer Suite (VIIRS) sensor on the Suomi National Polar-orbiting Partnership (NPP) Satellite. Therefore, this study conducted the first investigation of the capacity of Luojia 1-01 nighttime light data in detecting the extent and degree of impervious surfaces. Focusing on three cities of Beijing, Shanghai, and Guangzhou, several maps of the spatial extent of impervious surface areas were first extracted from two types of nighttime lights data (Luojia 1-01 and NPP-VIIRS data) by applying a dynamic threshold segmentation method. Meanwhile, a series of polynomial regression models were adopted to estimate the relation between imperiousness degree and light intensity. The results compared with the reference data derived from Landsat 8 Operational Land Imager (OLI) show that Luojia 1-01 data can produce a more precise map of the spatial extent of impervious surfaces than NPP-VIIRS data owing to the finer spatial resolution and the wider measurement range. Nevertheless, Luojia 1-01 data failed to provide reliable estimates of the imperviousness degree in comparison with NPP-VIIRS data as this nighttime light imagery with finer spatial resolution can better discriminate the surfaces that have the same imperviousness degree but are illuminated with different light intensities, consequently resulting in a weak correlation between imperviousness degree and light intensity. The over- and under-estimates of imperviousness degree suggested an increase in spatial resolution of nightlight imagery does not always improve the accuracy and reliability of nighttime light-based estimations. These study results confirmed that Luojia 1-01 nightlight imagery is a potential and promising data source for mapping the spatial extent of impervious surface areas, but difficult to accurately estimate the imperviousness degree. Future research may improve the accuracy of imperviousness degree estimation by integrating the Luojia 1-01 nightlight imagery with other useful data sources.
机译：不透水的表面检测对于城市动态监测和环境管理是重要的。评估不透水表面的最有效的方法之一是使用夜间光图像。但是，在罗杰1-01卫星的新一代夜间光数据上进行了很少的工作，它具有比来自可见红外成像辐射计套件（VIIRS）传感器（VIIRS）传感器等夜灯数据等前辈更精细的空间分辨率苏米国家奥巴伐普队卫星（NPP）卫星。因此，本研究进行了对洛佳1-01夜间光数据的第一次调查检测不渗透表面的程度和程度。专注于北京，上海和广州的三个城市，通过应用动态阈值分割方法，首先从两种夜间点燃数据（Luojia 1-01和NPP-VIIRS数据）中提取几种不透水表面区域的几个地图。同时，采用了一系列多项式回归模型来估计经济性度和光强度之间的关系。结果与来自Landsat 8运营陆地成像仪（OLI）的参考数据相比，罗杰1-01数据可以在由于更精细的空间分辨率和更精细的空间分辨率产生的不透水表面的空间程度更精确地图。更广泛的测量范围。尽管如此，罗杰1-01数据未能提供与NPP-VIIRS数据相比的不可渗透程度的可靠估计，因为这种夜间光图像具有更精细的空间分辨率，可以更好地区分具有相同不利程度的表面，而是用不同的光强度照射因此，导致不透水程度和光强度之间的相关性较弱。不渗透程度的过度和估计估计表明，夜灯图像的空间分辨率增加并不总是提高夜间光线估计的准确性和可靠性。这些研究结果证实，Luojia 1-01夜灯图像是一种潜在和有前途的数据源，用于绘制不透水表面积的空间程度，但难以准确地估计不利的程度。未来的研究可以通过与其他有用的数据来源集成罗杰1-01夜灯图像来提高不渗透程度估计的准确性。

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  • 作者

    Ou Jinpei; Liu Xiaoping; Liu Penghua; Liu Xiaojuan;

  • 作者单位

    Sun Yat Sen Univ Guangdong Key Lab Urbanizat &

    Geosimulat Sch Geog &

    Planning 135 West Xingang Rd Guangzhou 510275 Guangdong Peoples R China;

    Sun Yat Sen Univ Guangdong Key Lab Urbanizat &

    Geosimulat Sch Geog &

    Planning 135 West Xingang Rd Guangzhou 510275 Guangdong Peoples R China;

    Sun Yat Sen Univ Guangdong Key Lab Urbanizat &

    Geosimulat Sch Geog &

    Planning 135 West Xingang Rd Guangzhou 510275 Guangdong Peoples R China;

    Sun Yat Sen Univ Guangdong Key Lab Urbanizat &

    Geosimulat Sch Geog &

    Planning 135 West Xingang Rd Guangzhou 510275 Guangdong Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 测绘学;
  • 关键词

    Impervious surface; Luojia 1-01; NPP-VIIRS; Nighttime light;

    机译：不透水的表面;Luojia 1-01;NPP-VIIRS;夜间光线;

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