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Locally homogeneous covariance matrix representation for hyperspectral image classification
Zhang, Xinyu1; Wei, Yantao1; Yao, Huang1; Ye, Zhijing2; Zhou, Yicong3; Zhao, Yue4
2021-09-08
Source PublicationIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
ISSN1939-1404
Volume14Pages:9396-9407
Abstract

Combining spectralandspatial information has been proven to be an effective way for hyperspectral image (HSI) classification. However, making full use of spectral-spatial information of HSI still remains an open problem, especially when only a small number of labeled samples are available. In this article, a new spectral-spatial feature extraction method called locally homogeneous covariance matrix representation (CMR) is proposed for the fusion of spectral and spatial information. Specially, to make use of neighborhood homogeneity of land covers, original HSI is first segmented into many superpixels using modified entropy rate superpixel segmentation. Then, to acquire the most similar pixels, we propose to construct neighborhoods of each pixel from the overlapping areas between the corresponding superpixels and the sliding window centered on it. Subsequently, CMRs of different pixels can be obtained. In the classification stage, we fed the obtained CMRs into SVM with Log-Euclidean-based kernel for classification. Compared to the traditional approach that utilizes neighboring information only within a fixed window, the proposed local homogeneity strategy can absorb more discriminative spectral-spatial features. Experimental results from a series of available HSI datasets show that our proposed method is superior to several state-of-the-art methods, especially when the training set is very limited.

KeywordCovariance Matrix (Cm) Entropy Rate Superpixel (Ers) Segmentation Feature Extraction Hyperspectral Image (Hsi) Classification
DOI10.1109/JSTARS.2021.3110779
URLView the original
Indexed BySCIE
Language英語English
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:000702562100002
Scopus ID2-s2.0-85114732633
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Document TypeJournal article
CollectionFaculty of Science and Technology
Corresponding AuthorWei, Yantao
Affiliation1.Faulty of Artificial Intelligence in Education, Central China Normal University, Wuhan, 430079, China
2.School of Science, Wuhan University of Technology, Wuhan, 430070, China
3.Faculty of Science and Technology, University of Macau, 999078, Macao
4.School of Computer Science and Information Engineering, Hubei University, Wuhan, 430062, China
Recommended Citation
GB/T 7714
Zhang, Xinyu,Wei, Yantao,Yao, Huang,et al. Locally homogeneous covariance matrix representation for hyperspectral image classification[J]. IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2021, 14, 9396-9407.
APA Zhang, Xinyu., Wei, Yantao., Yao, Huang., Ye, Zhijing., Zhou, Yicong., & Zhao, Yue (2021). Locally homogeneous covariance matrix representation for hyperspectral image classification. IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 14, 9396-9407.
MLA Zhang, Xinyu,et al."Locally homogeneous covariance matrix representation for hyperspectral image classification".IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing 14(2021):9396-9407.
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