Fig. 1. Basic structure of residual block
Fig. 2. Network structure of channel attention mechanism
Fig. 3. Spatial attention mechanism network structure
Fig. 4. Network architecture of dual attention deep residual network
Fig. 5. Network structure of base modules
Fig. 6. Network structure of dual attention residual block
Fig. 7. Network structure of spatial attention block
Fig. 8. Spectral polarization camera
Fig. 9. Different polarization direction of fabric image
Fig. 10. Reconstruction effect of truck contraction model by different methods
Fig. 11. Reconstruction effect of airplane image by different methods
Fig. 12. Analysis of monument image full polarization
Fig. 13. Reconstruction effect of image V by different methods
Fig. 14. Comparison between polarization image reconstruction results of camouflage net and the system-acquired results
Fig. 15. Curve of relationship between no reference evaluation index and supercell multiple
Scale | Method | Params | 0° | 60° | 120° |
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PSNR/dB | SSIM | PSNR/dB | SSIM | PSNR/dB | SSIM |
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2 | Bicubic | - | 37.626 0 | 0.939 3 | 34.775 4 | 0.925 4 | 36.116 4 | 0.929 1 | SRCNN | 57K | 39.808 2 | 0.959 0 | 37.164 2 | 0.950 7 | 38.393 5 | 0.952 4 | FSRCNN | 12K | 39.858 2 | 0.959 9 | 37.520 4 | 0.952 4 | 38.583 1 | 0.953 8 | EDSR | 40.7M | 42.277 4 | 0.968 6 | 39.892 0 | 0.962 2 | 40.974 9 | 0.963 6 | Ours | 17.7M | 42.294 5 | 0.968 8 | 39.919 2 | 0.962 6 | 40.988 0 | 0.963 9 | 3 | Bicubic | - | 34.056 6 | 0.876 1 | 31.197 2 | 0.846 1 | 32.629 7 | 0.857 4 | SRCNN | 57K | 35.727 5 | 0.902 9 | 32.984 9 | 0.881 0 | 34.356 1 | 0.888 8 | FSRCNN | 12K | 35.572 2 | 0.902 7 | 33.047 5 | 0.881 8 | 34.280 4 | 0.889 0 | EDSR | 43.6M | 37.783 2 | 0.923 6 | 35.145 5 | 0.905 0 | 36.403 2 | 0.911 5 | Ours | 17.9M | 37.834 8 | 0.924 6 | 35.245 3 | 0.906 3 | 36.494 2 | 0.912 8 | 4 | Bicubic | - | 31.966 8 | 0.824 3 | 29.106 6 | 0.780 0 | 30.555 3 | 0.798 3 | SRCNN | 57K | 33.382 4 | 0.848 7 | 30.478 2 | 0.811 4 | 31.910 6 | 0.826 3 | FSRCNN | 12K | 33.471 3 | 0.849 3 | 30.665 4 | 0.813 7 | 32.031 8 | 0.827 7 | EDSR | 43M | 35.272 3 | 0.881 6 | 32.495 8 | 0.850 5 | 33.794 3 | 0.862 4 | Ours | 17.9M | 35.356 8 | 0.882 5 | 32.563 5 | 0.851 9 | 33.863 4 | 0.863 5 |
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Table 1. Comparison of indicators of fabric image polarization by different algorithms
Method | Time/s | Image V | Image Ey | Image S0 | Image Q | Image U |
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PSNR/dB | SSIM | PSNR/dB | SSIM | PSNR/dB | SSIM | PSNR/dB | SSIM | PSNR/dB | SSIM |
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Bicubic | 0.05 | 22.406 9 | 0.907 0 | 22.043 2 | 0.909 2 | 52.669 6 | 0.997 5 | 20.953 3 | 0.783 8 | 22.587 6 | 0.909 6 | SRCNN | 0.24 | 27.944 3 | 0.963 6 | 26.216 7 | 0.965 9 | 51.989 4 | 0.997 6 | 23.089 1 | 0.870 9 | 28.221 5 | 0.964 3 | FSRCNN | 0.25 | 27.567 7 | 0.960 4 | 25.850 3 | 0.958 8 | 51.167 9 | 0.997 3 | 24.194 1 | 0.903 8 | 27.786 7 | 0.961 9 | EDSR | 0.49 | 32.761 5 | 0.990 8 | 29.315 7 | 0.982 1 | 53.533 4 | 0.997 6 | 29.268 5 | 0.958 5 | 32.860 4 | 0.990 9 | Ours | 0.48 | 35.331 9 | 0.993 9 | 30.940 4 | 0.987 1 | 53.538 1 | 0.997 6 | 29.141 3 | 0.956 1 | 35.052 7 | 0.993 7 |
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Table 2. Comparison of indicators on the analysis of monument image full polarization by different algorithms
Scale | Information entropy | Definition |
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LR | HR | SR | LR | HR | SR |
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2 | 6.83 | 6.87 | 6.85 | 0.91 | 0.93 | 0.93 | 6.57 | 6.61 | 6.59 | 0.91 | 0.93 | 0.94 | 6.72 | 6.76 | 6.74 | 0.91 | 0.93 | 0.94 |
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Table 3. No reference comparison of camouflage net polarization images results