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Spatiotemporal Fuzzy Clustering Strategy for Urban Expansion Monitoring Based on Time Series of Pixel-Level Optical and SAR Images
Li, Shuang1; Wang, Yafei2,3; Chen, Peipei4; Xu, Xinliang5; Cheng, Chengqi6; Chen, Bo6
2017-05-01
Source PublicationIEEE JOURNAL OF SELECTED TOPICS IN APPLIED EARTH OBSERVATIONS AND REMOTE SENSING
ISSN1939-1404
Volume10Issue:5Pages:1769-1779
Corresponding AuthorWang, Yafei(wangyf.14b@igsnrr.ac.cn) ; Xu, Xinliang(xuxl@lreis.ac.cn)
AbstractMonitoring urban expansion dynamically using remote sensing technology is an essential method for obtaining and understanding urban spatial structure. However, the quality of traditional optical images in some areas is poor due to clouds and fog. Compared to optical images, synthetic aperture radar (SAR) can achieve earth observations without the limits of sunlight and weather conditions, but its speckle is too obvious. This paper combined the advantages of pixel-level optical image and SAR image time series and proposed a spatiotemporal fuzzy clustering (STFC) strategy for urban expansion monitoring. This strategy includes three parts: 1) the construction of optical-SAR image mixed time series; 2) a time-series fuzzy information granulation method to ascertain change nodes; and 3) STFC to determine the change types and range. In our study, 13 TM images and 25 SAR scenes taken from 2005 to 2011 were selected as raw data. We used the proposed method to monitor the urban expansion of Chengdu, China, and then, analyzed its main causes according to the monitoring results. The results suggested that: 1) the proposed methods could effectively extract the change nodes and change pixels, with the correctness of 85.20% and the completeness of 86.06%, outperforming the time series only (nonspatial) fuzzy clustering method, as well as traditional classification methods; and 2) the urban expansion of Chengdu is most apparent from 2005 to 2011, with the expansion direction shifting from the traditional ring structure expansion to point-axis expansion following the priority given to construction of new urban areas.
KeywordFuzzy information granulation optical-synthetic aperture radar (SAR) image time series pixel level spatiotemporal fuzzy clustering (STFC) urban expansion
DOI10.1109/JSTARS.2017.2657607
WOS KeywordREMOTE-SENSING IMAGES ; UNSUPERVISED CHANGE DETECTION ; LAND-COVER CHANGE ; WEST-AFRICA ; FUSION ; AREAS ; SEGMENTATION ; CLASSIFICATION ; CHINA ; URBANIZATION
Indexed BySCI
Language英语
WOS Research AreaEngineering ; Physical Geography ; Remote Sensing ; Imaging Science & Photographic Technology
WOS SubjectEngineering, Electrical & Electronic ; Geography, Physical ; Remote Sensing ; Imaging Science & Photographic Technology
WOS IDWOS:000399682500009
PublisherIEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Citation statistics
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/62697
Collection中国科学院地理科学与资源研究所
Corresponding AuthorWang, Yafei; Xu, Xinliang
Affiliation1.Peking Univ, Inst Remote Sensing & Geog Informat Syst, Beijing 100871, Peoples R China
2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Reg Sustainable Dev Modeling, Beijing 100101, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.China Land Surveying & Planning Inst, Beijing 100035, Peoples R China
5.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China
6.Peking Univ, Coll Engn, Beijing 100871, Peoples R China
Recommended Citation
GB/T 7714
Li, Shuang,Wang, Yafei,Chen, Peipei,et al. Spatiotemporal Fuzzy Clustering Strategy for Urban Expansion Monitoring Based on Time Series of Pixel-Level Optical and SAR Images[J]. IEEE JOURNAL OF SELECTED TOPICS IN APPLIED EARTH OBSERVATIONS AND REMOTE SENSING,2017,10(5):1769-1779.
APA Li, Shuang,Wang, Yafei,Chen, Peipei,Xu, Xinliang,Cheng, Chengqi,&Chen, Bo.(2017).Spatiotemporal Fuzzy Clustering Strategy for Urban Expansion Monitoring Based on Time Series of Pixel-Level Optical and SAR Images.IEEE JOURNAL OF SELECTED TOPICS IN APPLIED EARTH OBSERVATIONS AND REMOTE SENSING,10(5),1769-1779.
MLA Li, Shuang,et al."Spatiotemporal Fuzzy Clustering Strategy for Urban Expansion Monitoring Based on Time Series of Pixel-Level Optical and SAR Images".IEEE JOURNAL OF SELECTED TOPICS IN APPLIED EARTH OBSERVATIONS AND REMOTE SENSING 10.5(2017):1769-1779.
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