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- W2896935957 abstract "In view of the special properties of hyperspectral images(HSI) in the transform domain, in this paper, a new denoising method of HSI based on principal component analysis(PCA) and adaptive sparse coding is proposed. Firstly, the principal component image of each channel is obtained by performing PCA transform on the noisy HSI. Then, the first PCA output channels which contain a majority of the total energy of an HSI data cube are retained, and the rest PCA output channels which contain a small amount of energy, termed noise component images, are subjected to noise reduction through an adaptive sparse coding method. The encoding dictionaries are learned from each channel of noise component images by an approach of online dictionary learning. Finally, the denoised HSI is obtained by the inverse PCA transform. The proposed method takes the advantages of PCA and adaptive sparse representation that has better adaptability to the HSI. It not only performs better in denoising, but also preserves the details and alleviates the blocking artifacts well. The effectiveness of the proposed approach to hyperspectral denoising, termed PCASpC, is illustrated in a series of experiments with synthetic and realworld data where it outperforms the state-of-the-art." @default.
- W2896935957 created "2018-10-26" @default.
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- W2896935957 date "2018-08-01" @default.
- W2896935957 modified "2023-09-26" @default.
- W2896935957 title "Denoising of Hyperspectral Images Based on Principal Component Analysis and Adaptive Sparse Coding" @default.
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- W2896935957 doi "https://doi.org/10.1109/prrs.2018.8486272" @default.
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