Xuejing Qiu, Wang Zhao, Chao Yang, Tao Cheng, Shuai Wang, Bing Xu. A single-frame deep learning phase retrieval algorithm based on defocus grating[J]. Infrared and Laser Engineering, 2020, 49(10): 20200273
- Infrared and Laser Engineering
- Vol. 49, Issue 10, 20200273 (2020)
Fig. 1. Optical properties(a) and schematic diagram(b) of defocus grating
Fig. 2. Far-field intensity distribution acquired by CCD (b1) and corresponding positive defocus spots (b2), focal plane spots (b3), negative defocus spots (b4) when incident aberration is (a)
Fig. 3. Schematic diagram of single-frame deep learning PR algorithm based on defocus grating
Fig. 4. Schematic diagram of CNN architecture
Fig. 5. A sample from training set(c) and corresponding label(b), corresponding incident wavefront(a)
Fig. 6. Reconstruction accuracy of 1 000 test samples
Fig. 7. Fitting results of Zernike coefficients, incident wavefront, predicted wavefront and residual wavefront of 30th sample and 799th samples in test set
Fig. 8. Reconstruction accuracy of another 500 samples
Fig. 9. Incident wavefront, wavefront predicted by CNN and residual wavefront corresponding to 19th-23rd Zernike modes
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