Yan Chunman, Chen Jiahui, Ma Yunting, Hao Youfei, Zhang Di. Improvement of Grey Wolf Optimization Algorithm and Its Application in QR-Code Recognition[J]. Laser & Optoelectronics Progress, 2020, 57(2): 21015
- Laser & Optoelectronics Progress
- Vol. 57, Issue 2, 21015 (2020)
Fig. 1. Schematic of lifting wavelet transform
Fig. 2. QR-code image decomposition based on ifting wavelet transform
Fig. 3. Process of feature extraction for QR-code image
Fig. 4. Optimal convergence curves of functions. (a) F1; (b) F2
Fig. 5. Partial QR-code samples
Fig. 6. Testing results of mixed components of high and low frequencies
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Table 1. Testing results for six benchmark functions
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Table 2. Testing results of low-frequency components in levels of 1-4
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Table 3. Classification results of SVM model optimized by different algorithms
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Table 4. Comparison of recognition performances of different models
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