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Unsupervised Change Detection With Expectation-Maximization-Based Level Set

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WOS被引频次:24
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成果类型:
期刊论文
作者:
Hao, Ming*;Shi, Wenzhong;Zhang, Hua;Li, Chang
通讯作者:
Hao, Ming
作者机构:
[Zhang, Hua; Hao, Ming] China Univ Min & Technol, Sch Environm Sci & Spatial Informat, Xuzhou 221116, Peoples R China.
[Shi, Wenzhong] Hong Kong Polytech Univ, Dept Land Surveying & Geoinformat, Hong Kong, Hong Kong, Peoples R China.
[Li, Chang] Cent China Normal Univ, Coll Urban & Environm Sci, Wuhan 430079, Peoples R China.
通讯机构:
[Hao, M (reprint author)] China Univ Min & Technol, Sch Environm Sci & Spatial Informat, Xuzhou 221116, Peoples R China.
语种:
英文
关键词:
Expectation-maximization (EM);level set method;remote sensing;unsupervised change detection
期刊:
IEEE GEOSCIENCE AND REMOTE SENSING LETTERS
ISSN:
1545-598X
年:
2014
卷:
11
期:
1
页码:
210-214
文献类别:
WOS:Article;EI:Journal article (JA)
所属学科:
ESI学科类别:地球科学;WOS学科类别:Geochemistry & Geophysics;Engineering, Electrical & Electronic;Remote Sensing;Imaging Science & Photographic Technology
入藏号:
WOS:000328698400044;EI:20134817037395
基金类别:
Fundamental Research Funds for the Central Universities [2012LWB31]; Priority Academic Program Development of Jainism Higher Education Institutions; National Natural Science Foundation of China [41101407, 41201451]
院系归属:
城市与环境科学学院
摘要:
The level set method, because of its implicit handling of topological changes and low sensitivity to noise, is one of the most effective unsupervised change detection techniques for remotely sensed images. In this letter, an expectation-maximization-based level set method (EMLS) is proposed to detect changes. First, the distribution of the difference image generated from multitemporal images is supposed to satisfy Gaussian mixture model, and expectation-maximization (EM) is then used to estimate the mean values of changed and unchanged pixels in the difference image. Second, two new energy terms, based on the estimated means, are defined and added into the level set method to detect those changes without initial contours and improve final accuracy. Finally, the improved level set method is implemented to partition pixels into changed and unchanged pixels. Landsat and QuickBird images were tested, and experimental results confirm the EMLS effectiveness when compared to state-of-the-art unsupervised change detection methods.
参考文献:
Ahmadi S, 2010, INT J APPL EARTH OBS, V12, P150, DOI 10.1016/j.jag.2010.02.001
Ball JE, 2007, IEEE T GEOSCI REMOTE, V45, P3022, DOI 10.1109/TGRS.2007.905629
Bazi Y, 2010, IEEE T GEOSCI REMOTE, V48, P3178, DOI 10.1109/TGRS.2010.2045506
Bishop C. M., 2006, PATTERN RECOGNITION
Bruzzone L, 2000, IEEE T GEOSCI REMOTE, V38, P1171, DOI 10.1109/36.843009

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