Shuying Zeng, Hongzhong Tang, Shijun Deng, Dongbo Zhang. Multi-Resolution Dictionary Learning Algorithm with Discriminative Locality Constraints for Face Recognition[J]. Laser & Optoelectronics Progress, 2021, 58(14): 1415008
- Laser & Optoelectronics Progress
- Vol. 58, Issue 14, 1415008 (2021)
Fig. 1. MDLDLC algorithm flow chart
Fig. 2. Correspondence between dictionary atom and profile vector
Fig. 3. Comparative analysis of LLC, LCLE-DL and MDLDLC algorithms. (a) LLC algorithm; (b) LCLE-DL algorithm; (c) proposed MDLDLC algorithm
Fig. 4. Face images with different resolutions from the ORL database. (a) 56 pixel×46 pixel; (b) 28 pixel×23 pixel; (c) 14 pixel×12 pixel
Fig. 5. Face images with different resolutions from the Extended Yale B database. (a) 64 pixel×64 pixel; (b) 32 pixel×32 pixel; (c) 16 pixel×16 pixel
Fig. 6. Face images with different resolutions from the AR database. (a) 50 pixel×40 pixel; (b) 25 pixel×20 pixel; (c) 12 pixel×10 pixel
Fig. 7. Face images with different resolutions from PIE database. (a) 64 pixel×64 pixel; (b) 32 pixel×32 pixel; (c) 16 pixel×16 pixel
Fig. 8. Effect of parameter selection of α and β on the different datasets. (a) ORL database; (b) Extended Yale B database; (c) AR database; (d) PIE database
Fig. 9. Effect of number of atoms on the different datasets. (a) ORL database; (b) Extended Yale B database; (c) AR database; (d) PIE database
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Table 1. Recognition rates of different algorithms on the ORL database unit: %
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Table 2. Recognition rates of different algorithms on the Extended Yale B database unit: %
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Table 3. Recognition rates of different algorithms on the AR database unit: %
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Table 4. Recognition rates of different algorithms on the PIE database unit: %
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