PSSA: PCA-Domain Superpixelwise Singular Spectral Analysis for Unsupervised Hyperspectral Image Classification

doi:10.3390/rs15040890

CIOMP OpenIR

	PSSA: PCA-Domain Superpixelwise Singular Spectral Analysis for Unsupervised Hyperspectral Image Classification
	Q. Y. Liu; D. L. Xue; Y. H. Tang; Y. X. Zhao; J. C. Ren and H. J. Sun
	2023
发表期刊	Remote Sensing
卷号	15 期号:4 页码:18
摘要	Although supervised classification of hyperspectral images (HSI) has achieved success in remote sensing, its applications in real scenarios are often constrained, mainly due to the insufficiently available or lack of labelled data. As a result, unsupervised HSI classification based on data clustering is highly desired, yet it generally suffers from high computational cost and low classification accuracy, especially in large datasets. To tackle these challenges, a novel unsupervised spatial-spectral HSI classification method is proposed. By combining the entropy rate superpixel segmentation (ERS), superpixel-based principal component analysis (PCA), and PCA-domain 2D singular spectral analysis (SSA), both the efficacy and efficiency of feature extraction are improved, followed by the anchor-based graph clustering (AGC) for effective classification. Experiments on three publicly available and five self-collected aerial HSI datasets have fully demonstrated the efficacy of the proposed PCA-domain superpixelwise SSA (PSSA) method, with a gain of 15-20% in terms of the overall accuracy, in comparison to a few state-of-the-art methods. In addition, as an extra outcome, the HSI dataset we acquired is provided freely online.
DOI	10.3390/rs15040890
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收录类别	sci
语种	英语
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/67707
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	Q. Y. Liu,D. L. Xue,Y. H. Tang,et al. PSSA: PCA-Domain Superpixelwise Singular Spectral Analysis for Unsupervised Hyperspectral Image Classification[J]. Remote Sensing,2023,15(4):18.
APA	Q. Y. Liu,D. L. Xue,Y. H. Tang,Y. X. Zhao,&J. C. Ren and H. J. Sun.(2023).PSSA: PCA-Domain Superpixelwise Singular Spectral Analysis for Unsupervised Hyperspectral Image Classification.Remote Sensing,15(4),18.
MLA	Q. Y. Liu,et al."PSSA: PCA-Domain Superpixelwise Singular Spectral Analysis for Unsupervised Hyperspectral Image Classification".Remote Sensing 15.4(2023):18.

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