Wei Lin, Haihua Cui, Wei Zheng, Xinfang Zhou, Zhenlong Xu, Wei Tian. Phase Fringe Pattern Filtering Method for Shearography Using Deep Learning[J]. Laser & Optoelectronics Progress, 2022, 59(22): 2210009
- Laser & Optoelectronics Progress
- Vol. 59, Issue 22, 2210009 (2022)
Fig. 1. CycleGAN fringe pattern filtering model and loss model. (a) Fringe pattern filtering model; (b) forward cycle-consistency loss; (c) backward cycle-consistency loss
Fig. 2. Structure of fringe pattern filtering model based on CycleGAN
Fig. 3. Schematic of ideal noiseless phase map generation steps
Fig. 4. Loss change curve when the learning rate is 0.0001
Fig. 5. Model effects obtained under different number of iterations
Fig. 6. Loss function curves under different learning rates
Fig. 7. Filtering results of different methods for simulated noise fringe patterns
Fig. 8. Original noise fringe images and filtering results of different methods
Fig. 9. Filtering application optimization process. (a) Cropping from the original image; (b) cropping from filtered image; (c) image mosaic
Fig. 10. Filtering results for fringe pattern under different steps
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Table 1. Running time of different filtering methods
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