Acta Photonica Sinica, Volume. 50, Issue 11, 1111003(2021)
Correction Method of Narcissus Effect of Cooled Infrared System Based on Differential Threshold
Figures & Tables(17)
Fig. 10. Comparison of results before and after imaging restoration of resolution plate
Fig. 11. Comparison of results before and after simulated imaging restoration
Table 1. System design index
View tableView in ArticleTable 1. System design index
Parameter Content Focal length/mm 60 F-number 2 Wavelength/μm 3.7~4.8 Field of view/（ ） 6 MTF >0.45@33 lp/mm
Table 2. YNI of each surface of the initial system
View tableView in ArticleTable 2. YNI of each surface of the initial system
Surf YNI Surf YNI 1 1.814 16 8 -4.329 79 2 0.772 15 9 -4.318 81 3 -2.739 44 10 1.213 20 4 -0.249 92 11 0.955 30 5 1.821 16 12 -1.840 64 6 -2.681 29 13 -1.371 60 7 3.144 99 14 -1.296 58
Table 3. Limit the YNI of each surface of the system
View tableView in ArticleTable 3. Limit the YNI of each surface of the system
Surf YNI Surf YNI 1 2.901 69 8 -5.300 57 2 1.304 08 9 -5.168 70 3 -2.470 01 10 1.701 74 4 1.000 43 11 1.583 10 5 2.282 11 12 -1.594 47 6 -3.013 99 13 -1.465 54 7 4.090 49 14 -1.390 52
Table 4. YNI of each surface of the final system
View tableView in ArticleTable 4. YNI of each surface of the final system
Surf YNI Surf YNI 1 2.041 98 8 -4.463 68 2 1.008 98 9 -4.433 69 3 -2.705 89 10 1.264 11 4 -0.100 05 11 1.000 14 5 2.007 39 12 -1.841 61 6 -2.701 34 13 -1.380 99 7 3.328 76 14 -1.305 97
Table 5. Objective evaluation of function value
View tableView in ArticleTable 5. Objective evaluation of function value
Evaluation index Degraded Ordinary Proposed PSNR 18.668 5 22.156 4 26.798 7 SSIM 0.901 0 0.952 4 0.985 8
Table 6. Objective evaluation of function value
View tableView in ArticleTable 6. Objective evaluation of function value
Evaluation index Degraded Ordinary Proposed PSNR 24.872 0 31.872 8 37.815 7 SSIM 0.943 4 0.974 8 0.992 5
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Chaoyang MEI, Qingfeng CUI, Yang HU, Lin SUN, Xudong GAO, Hanqin ZHENG. Correction Method of Narcissus Effect of Cooled Infrared System Based on Differential Threshold[J]. Acta Photonica Sinica, 2021, 50(11): 1111003
Paper Information
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Received: Apr. 6, 2021
Accepted: Jul. 15, 2021
Published Online: Dec. 2, 2021
The Author Email: Qingfeng CUI (qf_cui@163.com)
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