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A novel oil spill detection method from synthetic aperture radar imageries via a bidimensional empirical mode decomposition 被引量:2

A novel oil spill detection method from synthetic aperture radar imageries via a bidimensional empirical mode decomposition
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摘要 Oil spills pose a major threat to ocean ecosystems and their health. Synthetic aperture radar(SAR) sensors can detect oil spills on the sea surface. These oil spills appear as dark spots in SAR images. However, dark formations can be caused by a number of phenomena. It is aimed to distinguishing oil spills or look-alike objects. A novel method based on a bidimensional empirical mode decomposition is proposed. The selected dark formations are first decomposed into several bidimensional intrinsic mode functions and the residue. Subsequently, 64 dimension feature sets are calculated using the Hilbert spectral analysis and five new features are extracted with a relief algorithm. Mahalanobis distances are then used for classification. Three data sets containing oil spills or look-alikes are used to test the accuracy rate of the method. The accuracy rate is more than 90%. The experimental results demonstrate that the novel method can detect oil spills validly and accurately. Oil spills pose a major threat to ocean ecosystems and their health. Synthetic aperture radar(SAR) sensors can detect oil spills on the sea surface. These oil spills appear as dark spots in SAR images. However, dark formations can be caused by a number of phenomena. It is aimed to distinguishing oil spills or look-alike objects. A novel method based on a bidimensional empirical mode decomposition is proposed. The selected dark formations are first decomposed into several bidimensional intrinsic mode functions and the residue. Subsequently, 64 dimension feature sets are calculated using the Hilbert spectral analysis and five new features are extracted with a relief algorithm. Mahalanobis distances are then used for classification. Three data sets containing oil spills or look-alikes are used to test the accuracy rate of the method. The accuracy rate is more than 90%. The experimental results demonstrate that the novel method can detect oil spills validly and accurately.
出处 《Acta Oceanologica Sinica》 SCIE CAS CSCD 2017年第7期86-94,共9页 海洋学报(英文版)
基金 The National Science and Technology Support Project under contract No.2014BAB12B02 the Natural Science Foundation of Liaoning Province under contract No.201602042
关键词 bidimensional empirical mode decomposition synthetic aperture radar image detection of oil spill hilbert spectral analysis bidimensional empirical mode decomposition synthetic aperture radar image detection of oil spill hilbert spectral analysis
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