• Optoelectronics Letters
  • Vol. 20, Issue 5, 299 (2024)
1,2,* and 1
Author Affiliations
  • 1School of Physics and Electronic Engineering, Northwest Normal University, Lanzhou 730070, China
  • 2Engineering Research Center of Gansu Province for Intelligent Information Technology and Application, Lanzhou 730070, China
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    DOI: 10.1007/s11801-024-3116-3 Cite this Article
    [in Chinese], [in Chinese]. Discriminative low-rank embedding with manifold con- straint for image feature extraction and classification[J]. Optoelectronics Letters, 2024, 20(5): 299 Copy Citation Text show less

    Abstract

    The robustness against noise, outliers, and corruption is a crucial issue in image feature extraction. To address this concern, this paper proposes a discriminative low-rank embedding image feature extraction algorithm. Firstly, to en- hance the discriminative power of the extracted features, a discriminative term is introduced using label information, obtaining global discriminative information and learning an optimal projection matrix for data dimensionality reduc- tion. Secondly, manifold constraints are incorporated, unifying low-rank embedding and manifold constraints into a single framework to capture the geometric structure of local manifolds while considering both local and global infor- mation. Finally, test samples are projected into a lower-dimensional space for classification. Experimental results demonstrate that the proposed method achieves classification accuracies of 95.62%, 95.22%, 86.38%, and 86.54% on the ORL, CMUPIE, AR, and COIL20 datasets, respectively, outperforming dimensionality reduction-based image fea- ture extraction algorithms.
    [in Chinese], [in Chinese]. Discriminative low-rank embedding with manifold con- straint for image feature extraction and classification[J]. Optoelectronics Letters, 2024, 20(5): 299
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