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2025-07-22
Hyperspectral Image Denoising Based on Multiscale Spatial-Spectral Feature Fusion in Frequency Domain
By
Progress In Electromagnetics Research B, Vol. 113, 117-128, 2025
Abstract
Hyperspectral images often suffer from various types of noise pollution during acquisition and processing, which can significantly affect their application. However, existing denoising methods have limitation in fully utilizing the spatial and spectral correlation of hyperspectral image. In order to take full advantage of the multiscale spatial features and global spectral correlation of hyperspectral image, a hyperspectral image denoising method based on multiscale spatial-spectral feature fusion in frequency domain is proposed in this paper. The proposed method utilizes the structural decomposition of multiscale wavelet transform to transfer the denoising of hyperspectral image to the frequency domain, not only minimizing information loss, but also decomposing noise into small scales, making it easier to remove in the frequency domain. Moreover, a cross-multiscale fusion attention is designed to improve the model performance by considering multiscale information and cross-space learning. A spectral position-aware self-attention module is proposed to more fully exploit the spectral correlation in hyperspectral image. And a multiscale fusion of spatial-spectral feature module is introduced to merge the different spatial and spectral features, thereby enhancing the denoising performance of the model. The experimental results demonstrate that the proposed method outperforms mainstream denoising methods in terms of performance. In addition, it exhibits better visual quality in texture details and edge protection.
Citation
Xiao-Zhen Ren, Jing Cui, Yi Hu, Xiaotian Zhang, and Yingying Niu, "Hyperspectral Image Denoising Based on Multiscale Spatial-Spectral Feature Fusion in Frequency Domain," Progress In Electromagnetics Research B, Vol. 113, 117-128, 2025.
doi:10.2528/PIERB25040801
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