期刊
IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING
卷 59, 期 2, 页码 1453-1471出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TGRS.2020.2999936
关键词
Hyperspectral imaging; Noise measurement; Robustness; Matrix decomposition; Sparse matrices; Adaptation models; Correntropy; half-quadratic optimization; hyperspectral unmixing (HU); sparsity; spatial-spectral robustness
类别
资金
- National Nature Science Foundation of China [61571170]
- Shanghai Aerospace Science and Technology Innovation Fund [SAST2015033]
- Ministry of Education of China [6141A02022350]
Hyperspectral unmixing is a crucial technique for exploiting spectral signatures and their abundances in remotely sensed data. Existing robust methods often assume noise only exists in one form, but in reality, HSIs are corrupted by multiple types of noise simultaneously. This article proposes a robust unmixing model with spatial-spectral constraints and adaptive weighted sparsity for abundances.
Hyperspectral unmixing (HU) is a crucial technique for exploiting remotely sensed hyperspectral data, which aims at estimating a set of spectral signatures, called endmembers and their corresponding proportions, called abundances. The performance of HU is often seriously degraded by various kinds of noise existing in hyperspectral images (HSIs). Most of existing robust HU methods are based on the assumption that noise or outlier only exists in one kind of formulation, e.g., band noise or pixel noise. However, in real-world applications, HSIs are unavoidably corrupted by noisy bands and noisy pixels simultaneously, which require robust HU in both the spatial dimension and spectral dimension. Meanwhile, the sparsity of abundances is an inherent property of HSIs and different regions in an HSI may possess various sparsity levels across locations. This article proposes a correntropy-based spatial-spectral robust sparsity-regularized unmixing model to achieve 2-D robustness and adaptive weighted sparsity constraint for abundances simultaneously. The updated rules of the proposed model are efficient to be implemented and carried out by a half-quadratic technique. The experimental results obtained by both synthetic and real hyperspectral data demonstrate the superiority of the proposed method compared to the state-of-the-art methods.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据