期刊
IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING
卷 59, 期 1, 页码 550-562出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TGRS.2020.2994968
关键词
Tensile stress; Bayes methods; Spatial resolution; Sparse matrices; Machine learning; Image fusion; Hyperspectral (HS) image; image fusion; low-rank tensor approximation; multispectral (MS) image; sparse representation
类别
资金
- National Natural Science Foundation of China [U1864204, U1801262, 61871470, 61773316]
The article introduces a novel fusion method for HS and MS images based on nonlocal low-rank tensor approximation and sparse representation, which aims to generate high-resolution HRHS images. The proposed method is shown to outperform several state-of-the-art competitors in experiments on synthetic and real data sets.
The fusion of hyperspectral (HS) and multispectral (MS) images designed to obtain high-resolution HS (HRHS) images is a very challenging work. A series of solutions has been proposed in recent years. However, the similarity in the structure of the HS image has not been fully used. In this article, we present a novel HS and MS image-fusion method based on nonlocal low-rank tensor approximation and sparse representation. Specifically, the HS image and the MS image are considered the spatially and spectrally degraded versions of the HRHS image, respectively. Then, the nonlocal low-rank constraint term is adopted in order to form the nonlocal similarity and the spatial spectral correlation. Meanwhile, we add the sparse constraint term to describe the sparsity of abundance. Thus, the proposed fusion model is established and its optimization is solved by alternative direction method of multipliers (ADMM). The experimental results on three synthetic data sets and one real data set show the advantages of the proposed method over several state-of-the-art competitors.
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