Breaking Spatial Boundaries: Spectral-Domain Registration Guided Hyperspectral and Multispectral Blind Fusion
Kunjing Yang, Libin Zheng, Minru Bai, Ting Lu, Leyuan Fang

TL;DR
This paper introduces a spectral-domain approach for blind fusion of hyperspectral and multispectral images, improving registration accuracy and computational efficiency by leveraging spectral features and low-rank regularization.
Contribution
The paper proposes a novel spectral-domain registration method with a lightweight spectral prior learning network and a blind sparse fusion model using group sparsity, reducing complexity and enhancing accuracy.
Findings
Effective registration and fusion demonstrated on simulated datasets.
Improved classification performance using the proposed method.
Reduced computational complexity compared to spatial-domain methods.
Abstract
The blind fusion of unregistered hyperspectral images (HSIs) and multispectral images (MSIs) has attracted growing attention recently. To address the registration challenge, most existing methods employ spatial transformations on the HSI to achieve alignment with the MSI. However, due to the substantial differences in spatial resolution of the images, the performance of these methods is often unsatisfactory. Moreover, the registration process tends to be time-consuming when dealing with large-sized images in remote sensing. To address these issues, we propose tackling the registration problem from the spectral domain. Initially, a lightweight Spectral Prior Learning (SPL) network is developed to extract spectral features from the HSI and enhance the spectral resolution of the MSI. Following this, the obtained image undergoes spatial downsampling to produce the registered HSI. In this…
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Taxonomy
TopicsRemote-Sensing Image Classification · Spectroscopy and Chemometric Analyses
