Impervious Surface Extraction by Linear Spectral Mixture Analysis with Post-Processing Model
Impervious Surface Extraction by Linear Spectral Mixture Analysis with Post-Processing Model
复制标题
通过线性光谱混合分析和后处理模型提取不透水表面
DOI:
10.1109/access.2020.3008695
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发表时间:
2020
期刊:
影响因子:
3.9
通讯作者:
Wu Pinghao
中科院分区:
文献类型:
--
作者:
Zhao Yi;Xu Jianhui;Zhong Kaiwen;Wang Yunpeng;Hu Hongda;Wu Pinghao
Accurate estimations of impervious surface areas are essential for urban planning development. Linear spectral mixture analysis (LSMA) is commonly adopted to extract the impervious surface (IS) fraction in a mixed pixel at the subpixel scale. However, owing to errors in the spectra of pure pixels selected from remote sensing images, incorrect fractions of different land cover types often emerge after unmixing. In this study, two Landsat 8 Operational Land Imager (OLI) images—acquired on 20 September 2019 (Path/Row: 121/44) and 14 November 2019 (Path/Row: 122/44)—of Guangzhou and Shenzhen were unmixed by LSMA using spectral indices in endmember selection. A post-processing model using the Dry Bare-soil Index (DBSI) and Normalized Difference Vegetation Index (NDVI) as thresholds was established to improve the IS fraction of the LSMA result. Comparative analysis reveals that LSMA with the post-processing model achieves better performance for IS fraction extraction (R2 = 0.910 and 0.926 and root mean square error [RMSE] = 10.08% and 10.83% for Guangzhou and Shenzhen, respectively), and the distribution of IS is basically consistent with the IS of the actual areas. The post-processing model solves the problem of overestimation of pervious surface and underestimation of impervious surface.
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影响因子:
3.9
作者:
Azad Rasul;H. Balzter;G. F. Ibrahim;H. Hameed;J. Wheeler;B. Adamu;S. Ibrahim;Peshawa M. Najmaddin-Peshawa-M.-Naj
通讯作者:
Azad Rasul;H. Balzter;G. F. Ibrahim;H. Hameed;J. Wheeler;B. Adamu;S. Ibrahim;Peshawa M. Najmaddin-Peshawa-M.-Naj
DOI:
10.11834/jrs.20050586
发表时间:
2005
期刊:
National Remote Sensing Bulletin
影响因子:
--
作者:
Han-qiu Xu
通讯作者:
Han-qiu Xu
DOI:
--
发表时间:
2008
期刊:
Remote Sensing Technology and Application
影响因子:
--
作者:
Fan Feng-lei
通讯作者:
Fan Feng-lei
影响因子:
13.5
作者:
Vermote, Eric;Justice, Chris;Franch, Belen
通讯作者:
Franch, Belen
影响因子:
13.5
作者:
Weng, Qihao
通讯作者:
Weng, Qihao