Residential College | false |
Status | 已發表Published |
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 Publication | IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing |
ISSN | 1939-1404 |
Volume | 14Pages: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. |
Keyword | Covariance Matrix (Cm) Entropy Rate Superpixel (Ers) Segmentation Feature Extraction Hyperspectral Image (Hsi) Classification |
DOI | 10.1109/JSTARS.2021.3110779 |
URL | View the original |
Indexed By | SCIE |
Language | 英語English |
WOS Research Area | Engineering ; Physical Geography ; Remote Sensing ; Imaging Science & Photographic Technology |
WOS Subject | Engineering, Electrical & Electronic ; Geography, Physical ; Remote Sensing ; Imaging Science & Photographic Technology |
WOS ID | WOS:000702562100002 |
Scopus ID | 2-s2.0-85114732633 |
Fulltext Access | |
Citation statistics | |
Document Type | Journal article |
Collection | Faculty of Science and Technology |
Corresponding Author | Wei, Yantao |
Affiliation | 1.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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