期刊
IEEE GEOSCIENCE AND REMOTE SENSING LETTERS
卷 19, 期 -, 页码 -出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LGRS.2020.3035677
关键词
Bipartite graph; Eigenvalues and eigenfunctions; Clustering algorithms; Matrix decomposition; Optimization; Computational complexity; Laplace equations; Adaptive neighbors; hyperspectral image (HSI); spectral embedding; structured graph learning
类别
资金
- National Research and Development Program of China [2018YFB1802100]
This letter proposes a new clustering method named fast spectral embedded clustering based on structured graph learning (FSECSGL) for hyperspectral image (HSI) analysis. By reducing data dimension and learning an optimal similarity matrix, this method achieves improved clustering performance.
Hyperspectral image (HSI) contains rich spectral information and spatial features, but the huge amount of data often leads to problems of low clustering accuracy and large computational complexity. In this letter, a new clustering method for HSI is proposed, which is named fast spectral embedded clustering based on structured graph learning (FSECSGL). First, the low-dimensional representation of data can be obtained to reduce the scale by the fast spectral embedded method. Then, we use the embedded data to learn an optimal similarity matrix by structured graph learning. Furthermore, the learning structure graph gives feedback to the original bipartite graph to generate better spectral embedded data. As a result, we can obtain a better similarity matrix and clustering result by iteration, which can overcome the limitation of -means initialization. Experiments show that this method can obtain good clustering performance compared with other methods.
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