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Supervised feature extraction method based on low-rank representation with preserving local pairwise constraints for hyperspectral images

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Abstract

Feature extraction (FE) methods based on low-rank representation (LRR) have become important topics in hyperspectral images (HSIs) data analysis. In this paper, a supervised FE method for HSIs data based on LRR with the ability to preserve the local pairwise constraints information (LRLPC) is proposed. LRLPC does not change the data dimensionality and only employs a technique to enrich the original feature space (OFS) and to obtain enriched feature space, which results in features richer than OFS. To overcome the problem of LRR in lacking the local structure information (LSI) of data, a local discriminative regularization term is imposed on the fitness function of LRR to keep the LSI of data. For nonlinear structure of data, LRLPC is extended to kernel LRLPC (KLRLPC) using kernel trick. Utilization of existing information in the pairwise constraints is useful for limited labeled samples situations as a common problem in HSI data analysis. The obtained experimental results using two well-known HSI data sets confirm the effectiveness of LRLPC and KLRLPC for dimension reduction and classification of HSIs.

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Authors and Affiliations

  1. Faculty of Electrical and Computer Engineering, University of Birjand, Birjand, Iran

    Seyyed Ali Ahmadi, Nasser Mehrshad & Seyyed Mohammad Razavi

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  1. Seyyed Ali Ahmadi
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  2. Nasser Mehrshad
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  3. Seyyed Mohammad Razavi
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Correspondence to Nasser Mehrshad.

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Ahmadi, S.A., Mehrshad, N. & Razavi, S.M. Supervised feature extraction method based on low-rank representation with preserving local pairwise constraints for hyperspectral images. SIViP 13, 583–590 (2019). https://doi.org/10.1007/s11760-018-1385-7

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  • DOI: https://doi.org/10.1007/s11760-018-1385-7

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