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• W3082550982 abstract "Exploring techniques that breakthrough the unknown space or material species is of considerable significance to military and civilian fields, and it is a challenging task without any prior information. Nowadays, the use of material-specific spectral information to detect unknowns has received increasing interest. However, affected by noise and interference, high-dimensional hyperspectral anomaly detection is difficult to meet the requirements of high detection accuracy and low false alarm rate. Besides, there is a problem of insufficient and unbalanced samples. To address these problems, we propose a novel hyperspectral anomaly detection framework based on spectral mapping and feature selection (SMFS) in an unsupervised manner. The SMFS introduces the essential properties of hyperspectral data into an unsupervised neural network to construct the nonlinear mapping relationship from high-dimensional spectral space to low-dimensional deep feature space. And it searches the optimal feature subset from the candidate feature space for standing out anomalies. Because of the compelling characterization of the encoder, we develop it specifically for spectral signatures to reveal the hidden data. Quantitative and qualitative experiments on real hyperspectral datasets indicate that the proposed method can provide the compact features overcoming the problems of noise, interference, redundancy and time-consuming caused by high-dimensionality and limited samples. And it has advantages over some state-of-the-art competitors concerning detecting anomalies of different scales." @default.
• W3082550982 created "2020-09-08" @default.
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• W3082550982 date "2020-12-01" @default.
• W3082550982 modified "2023-10-15" @default.
• W3082550982 title "Unsupervised spectral mapping and feature selection for hyperspectral anomaly detection" @default.
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• W3082550982 doi "https://doi.org/10.1016/j.neunet.2020.08.010" @default.
• W3082550982 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/32889154" @default.
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