Haixia WANG, Lubin SHAN, Qiaoling PANG, Yilong ZHANG. Phase Extraction Method of Fingerprint Fringe Pattern Based on Convolutional Neural Network[J]. Acta Photonica Sinica, 2022, 51(6): 0610003
- Acta Photonica Sinica
- Vol. 51, Issue 6, 0610003 (2022)
Fig. 1. 3D fingerprint collection platform
Fig. 2. Fringe pattern examples of fingerprints
Fig. 3. Network structure
Fig. 4. Wrapped phase simulation
Fig. 5. Phase extraction results and corresponding local effect demonstration
Fig. 6. Phase demonstration of the 200th line of two different fingers
Fig. 7. The 2π discontinuity region extraction of wrapped phase map
Fig. 8. Display of different loss function results
Fig. 9. Demonstration of phase unwrapping results
Fig. 10. 3D results based on Geomatic Studio 12
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Table 1. The parameters of each layer of the neural network
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Table 2. Comparison of phase extraction accuracy
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Table 3. Phase errors at the 2π discontinuity region
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Table 4. Image similarity results
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Table 5. Phase errors under different losses
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Table 6. Phase errors at the 2π discontinuity region under different losses
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