Optoelectronics Letters, Volume. 20, Issue 5, 299(2024)
Discriminative low-rank embedding with manifold con- straint for image feature extraction and classification
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.
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[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
Received: Jun. 29, 2023
Accepted: Oct. 1, 2023
Published Online: Aug. 23, 2024
The Author Email: (yancm2022@163.com)