Discriminative low-rank embedding with manifold constraint for image feature extraction and classification
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1. School of Physics and Electronic Engineering, Northwest Normal University, Lanzhou 730070, China;2. Engineering Research Center of Gansu Province for Intelligent Information Technology and Application, Lanzhou 730070, China

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    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 enhance 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 reduction. 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 information. 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 feature extraction algorithms.

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YAN Chunman. Discriminative low-rank embedding with manifold constraint for image feature extraction and classification[J]. Optoelectronics Letters,2024,20(5):299-306

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History
  • Received:June 29,2023
  • Revised:October 01,2023
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  • Online: March 29,2024
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