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Two-Dimensional Robust Nonnegative Matrix Factorization for Hyperspectral Unmixing | IEEE Conference Publication | IEEE Xplore

Two-Dimensional Robust Nonnegative Matrix Factorization for Hyperspectral Unmixing


Abstract:

Nonnegative matrix factorization (NMF) and its various robust extensions have been widely applied to hyperspectral unmixing. Most existing robust NMF methods consider tha...Show More

Abstract:

Nonnegative matrix factorization (NMF) and its various robust extensions have been widely applied to hyperspectral unmixing. Most existing robust NMF methods consider that noises only exist in one kind of formulation. However, hyperspectral images (HSI) are unavoidably corrupted by noisy bands and noisy pixels simultaneously in the real application s. This paper presents a robust NMF using ℓ1,2 norm and further proposes a two-dimensional robust NMF model by incorporating ℓ2,1 norm and ℓ1,2 norm, which is robust to noises in both spatial dimension and spectral dimension simultaneously. In addition, the Huber's M-estimator is integrated into the model to achieve better assignations of weights for each pixel and band with various noise intensities, which avoids the singularity problem and effectively improves the unmixing performance. The elegant updating rules of the proposed model are also efficiently learnt and provided. Experiments are conducted on both synthetic and real hyperspectral data sets. The experimental results demonstrate the effectiveness of the proposed methods in unmixing performance.
Date of Conference: 28 July 2019 - 02 August 2019
Date Added to IEEE Xplore: 14 November 2019
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Conference Location: Yokohama, Japan

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