L
Luanyun Hu
Researcher at Tsinghua University
Publications - 9
Citations - 2400
Luanyun Hu is an academic researcher from Tsinghua University. The author has contributed to research in topics: Thematic Mapper & Land cover. The author has an hindex of 9, co-authored 9 publications receiving 1918 citations.
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Journal ArticleDOI
Finer resolution observation and monitoring of global land cover: first mapping results with Landsat TM and ETM+ data
Peng Gong,Jie Wang,Le Yu,Yongchao Zhao,Yuanyuan Zhao,Lu Liang,Zhenguo Niu,Xiaomeng Huang,Haohuan Fu,Shuang Liu,Congcong Li,Xueyan Li,Wei Fu,Caixia Liu,Yue Xu,Xiaoyi Wang,Qu Cheng,Luanyun Hu,Wenbo Yao,Han Zhang,Peng Zhu,Ziying Zhao,Haiying Zhang,Yaomin Zheng,Luyan Ji,Yawen Zhang,Han Chen,An Yan,JianHong Guo,Liang Yu,Lei Wang,Xiaojun Liu,Tingting Shi,Menghua Zhu,Yanlei Chen,Guangwen Yang,Ping Tang,Bing Xu,Chandra Giri,Nicholas Clinton,Zhiliang Zhu,Jin Chen,Jun Chen +42 more
TL;DR: In this article, the first 30 m resolution global land cover maps using Landsat Thematic Mapper TM and enhanced thematic mapper plus ETM+ data were produced. And the authors used four classifiers that were freely available were employed, including the conventional maximum likelihood classifier MLC, J4.8 decision tree classifier, Random Forest RF classifier and support vector machine SVM classifier.
Journal ArticleDOI
Comparison of Classification Algorithms and Training Sample Sizes in Urban Land Classification with Landsat Thematic Mapper Imagery
TL;DR: In this paper, the spectral information provided by the Landsat Thematic Mapper (TM) data set and the same classification scheme over Guangzhou City, China, was tested with two unsupervised and 13 supervised classification algorithms, including a number of machine learning algorithms.
Journal ArticleDOI
China’s urban expansion from 1990 to 2010 determined with satellite remote sensing
Lei Wang,Lei Wang,Congcong Li,Qing Ying,Xiao Cheng,Xiao Cheng,Xiaoyi Wang,Xueyan Li,Luanyun Hu,Lu Liang,Le Yu,Huabing Huang,Peng Gong,Peng Gong,Peng Gong +14 more
TL;DR: Based on the same data source of Landsat TM/ETM+ in 1990s, 2000s and 2010s, all urban built-up areas in China are mapped mainly by human interpretation as mentioned in this paper.
Comparison of Classification Algorithms and Training Sample Sizes in Urban Land Classification with Landsat Thematic
TL;DR: This research tested two unsupervised and 13 supervised classification algorithms, including a number of machine learning algorithms that became popular in remote sensing during the past 20 years, with the same Landsat Thematic Mapper data set.
Journal ArticleDOI
Towards a common validation sample set for global land-cover mapping
Yuanyuan Zhao,Peng Gong,Le Yu,Luanyun Hu,Xueyan Li,Congcong Li,Haiying Zhang,Yaomin Zheng,Jie Wang,Yongchao Zhao,Qu Cheng,Caixia Liu,Shuang Liu,Xiaoyi Wang +13 more
TL;DR: A global validation data-set based on interpreting Landsat Thematic Mapper and Enhanced TM Plus images for a total of 38,664 sample units pre-determined with an equal-area stratified sampling scheme, which indicates some of the homogeneous sample units in the data- set have already been used in assessing other classification results or as training data for land-cover mapping with coarser-resolution data.