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A new kernel method for hyperspectral image feature extraction

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Abstract
Hyperspectral image provides abundant spectral information for remote discrimination of subtle differences in ground covers. However, the increasing spectral dimensions, as well as the information redundancy, make the analysis and interpretation of hyperspectral images a challenge. Feature extraction is a very important step for hyperspectral image processing. Feature extraction methods aim at reducing the dimension of data, while preserving as much information as possible. Particularly, nonlinear feature extraction methods (e.g. kernel minimum noise fraction (KMNF) transformation) have been reported to benefit many applications of hyperspectral remote sensing, due to their good preservation of high-order structures of the original data. However, conventional KMNF or its extensions have some limitations on noise fraction estimation during the feature extraction, and this leads to poor performances for post-applications. This paper proposes a novel nonlinear feature extraction method for hyperspectral images. Instead of estimating noise fraction by the nearest neighborhood information (within a sliding window), the proposed method explores the use of image segmentation. The approach benefits both noise fraction estimation and information preservation, and enables a significant improvement for classification. Experimental results on two real hyperspectral images demonstrate the efficiency of the proposed method. Compared to conventional KMNF, the improvements of the method on two hyperspectral image classification are 8 and 11%. This nonlinear feature extraction method can be also applied to other disciplines where high-dimensional data analysis is required.
Keywords
PRINCIPAL COMPONENTS TRANSFORM, NOISE ESTIMATION, CLASSIFICATION, ALGORITHM, SELECTION, BAND, Hyperspectral image, dimensionality reduction, feature extraction, image segmentation, kernel method

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MLA
Zhao, Bin, et al. “A New Kernel Method for Hyperspectral Image Feature Extraction.” GEO-SPATIAL INFORMATION SCIENCE, edited by Xin Huang et al., vol. 20, no. 4, 2017, pp. 309–18.
APA
Zhao, B., Gao, L., Liao, W., & Zhang, B. (2017). A new kernel method for hyperspectral image feature extraction. GEO-SPATIAL INFORMATION SCIENCE, 20(4), 309–318.
Chicago author-date
Zhao, Bin, Lianru Gao, Wenzhi Liao, and Bing Zhang. 2017. “A New Kernel Method for Hyperspectral Image Feature Extraction.” Edited by Xin Huang, Jiayi Li, Wenzhi Liao, and Jocelyn Chanussot. GEO-SPATIAL INFORMATION SCIENCE 20 (4): 309–18.
Chicago author-date (all authors)
Zhao, Bin, Lianru Gao, Wenzhi Liao, and Bing Zhang. 2017. “A New Kernel Method for Hyperspectral Image Feature Extraction.” Ed by. Xin Huang, Jiayi Li, Wenzhi Liao, and Jocelyn Chanussot. GEO-SPATIAL INFORMATION SCIENCE 20 (4): 309–318.
Vancouver
1.
Zhao B, Gao L, Liao W, Zhang B. A new kernel method for hyperspectral image feature extraction. Huang X, Li J, Liao W, Chanussot J, editors. GEO-SPATIAL INFORMATION SCIENCE. 2017;20(4):309–18.
IEEE
[1]
B. Zhao, L. Gao, W. Liao, and B. Zhang, “A new kernel method for hyperspectral image feature extraction,” GEO-SPATIAL INFORMATION SCIENCE, vol. 20, no. 4, pp. 309–318, 2017.
@article{8523662,
  abstract     = {Hyperspectral image provides abundant spectral information for remote discrimination of subtle differences in ground covers. However, the increasing spectral dimensions, as well as the information redundancy, make the analysis and interpretation of hyperspectral images a challenge. Feature extraction is a very important step for hyperspectral image processing. Feature extraction methods aim at reducing the dimension of data, while preserving as much information as possible. Particularly, nonlinear feature extraction methods (e.g. kernel minimum noise fraction (KMNF) transformation) have been reported to benefit many applications of hyperspectral remote sensing, due to their good preservation of high-order structures of the original data. However, conventional KMNF or its extensions have some limitations on noise fraction estimation during the feature extraction, and this leads to poor performances for post-applications. This paper proposes a novel nonlinear feature extraction method for hyperspectral images. Instead of estimating noise fraction by the nearest neighborhood information (within a sliding window), the proposed method explores the use of image segmentation. The approach benefits both noise fraction estimation and information preservation, and enables a significant improvement for classification. Experimental results on two real hyperspectral images demonstrate the efficiency of the proposed method. Compared to conventional KMNF, the improvements of the method on two hyperspectral image classification are 8 and 11%. This nonlinear feature extraction method can be also applied to other disciplines where high-dimensional data analysis is required.},
  author       = {Zhao, Bin and Gao, Lianru and Liao, Wenzhi and Zhang, Bing},
  editor       = {Huang, Xin and Li, Jiayi and Liao, Wenzhi and Chanussot, Jocelyn},
  issn         = {1009-5020},
  journal      = {GEO-SPATIAL INFORMATION SCIENCE},
  keywords     = {PRINCIPAL COMPONENTS TRANSFORM,NOISE ESTIMATION,CLASSIFICATION,ALGORITHM,SELECTION,BAND,Hyperspectral image,dimensionality reduction,feature extraction,image segmentation,kernel method},
  language     = {eng},
  number       = {4},
  pages        = {309--318},
  title        = {A new kernel method for hyperspectral image feature extraction},
  url          = {http://dx.doi.org/10.1080/10095020.2017.1403088},
  volume       = {20},
  year         = {2017},
}

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