Spectral-Spatial Method for Hyperspectral Image classiﬁcation in Noisy Environment
DOI: 10.23977/geors.2019.21002 | Downloads: 11 | Views: 384
Pierre Delmas 1, Caroline Fossati 1, Salah Bourennane 1
1 Aix Marseille Univ, CNRS, Centrale Marseille, Institut Fresnel, Marseille, France
Corresponding AuthorPierre Delmas
Target detection is an important issue in the HyperSpectral Image (HSI) processing ﬁeld. However, current spectral-identiﬁcation-based target detection algorithms are sensitive to the noise and most denoising algorithms cannot preserve small targets, therefore it is necessary to design a robust detection algorithm that can preserve small targets. Because the signal-dependent photonic noise has become as dominant as the signal-independent noise generated by the electronic circuitry in HSI data collected by new-generation hyperspectral sensors, the reduction of the additive signal-dependent photonic noise becomes the focus of the current research in this ﬁeld. To reduce the opto-elctronic noise from HSIs, a new method is developed in this paper. Firstly, a pre-whitening procedure is proposed to whiten noise in HSIs. Secondly, a three-dimensional wavelet packet transform (3-WPT) in tensor form is presented to ﬁnd diﬀerent component tensors of HSI. Then, to jointly ﬁlter a component tensor in each mode, multiway Wiener ﬁlter (MWF) is introduced. Moreover, to determine the best transform level and basis of 3-WPT a risk function is proposed. The eﬀectiveness of our method in classiﬁcation is experimentally demonstrated on a real-world HSI acquired by airborne sensor.
KEYWORDSDetection, multi-linear algebra, reduction, wavelet, hyperspectral image
CITE THIS PAPER
Pierre Delmas, Caroline Fossati and Salah Bourennane, Spectral-Spatial Method for Hyperspectral Image classiﬁcation in Noisy Environment, Geoscience and Remote Sensing (2019) Vol. 2: 25-40. DOI: http://dx.doi.org/10.23977/geors.2019.21002.
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