Acta Photonica Sinica, Volume. 51, Issue 12, 1212003(2022)
Research on the Extraction Method of Test Light Source Variation Based on Directional Polarimetric Camera Data
Figures & Tables(12)
Fig. 5. Correlation coefficient between A1~A8 of trap detector and A1~A8 of DPC 670 nm（P1）
Fig. 6. Pearson correlation coefficient between A1~A8 of DN value frame sequence of 670 nm（P1）、670 nm（P2）、670 nm（P3）channel
Fig. 9. The improved SNR of the trap detector de-illumination variation method and the wavelet decomposition de- illumination variation method
Table 1. Variation of light energy in each wavelength band
View tableView in ArticleTable 1. Variation of light energy in each wavelength band
Band/nm Light energy increase ratio 490 1.065% 910 0.721% 865 0.554% 763 0.278% 765 0.268% 670 0.205%
Table 2. Comparison of calculation results of the instability parameter by two correction methods
View tableView in ArticleTable 2. Comparison of calculation results of the instability parameter by two correction methods
Band/nm Before correction After TRAP correction After wavelet decomposition correction 490 0.29% 0.27% 0.089% 910 0.20% 0.17% 0.006 5% 865 0.15% 0.12% 0.009 1% 763 0.074% 0.049% 0.008 49% 765 0.071% 0.047% 0.009 55% 670 0.056% 0.056% 0.015 40%
Table 3. Numerical comparison of the improved SNR between trap detector de-illumination variation method and wavelet decomposition de-illumination variation method
View tableView in ArticleTable 3. Numerical comparison of the improved SNR between trap detector de-illumination variation method and wavelet decomposition de-illumination variation method
Channel After TRAP correction After wavelet decomposition correction Mean 0.72% 2.52% 490 nm（P1） 0.09% 0.51% 490 nm（P2） 0.09% 0.55% 490 nm（P3） 0.09% 0.57% 670 nm（P1） 0.14% 0.20% 670 nm（P2） 0.16% 0.23% 670 nm（P3） 0.15% 0.22% 763 nm 0.71% 1.26% 765 nm 0.52% 0.90% 865 nm（P1） 1.28% 4.35% 865 nm（P2） 1.28% 4.31% 865 nm（P3） 1.28% 4.34% 910 nm 2.76% 12.90%
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Chen YE, Donggen LUO, Yixin LI, Pingping YAO, Yi WANG, Guangfeng XIANG, Yang LI, Shuang LI, Jin HONG. Research on the Extraction Method of Test Light Source Variation Based on Directional Polarimetric Camera Data[J]. Acta Photonica Sinica, 2022, 51(12): 1212003
Paper Information
Category: Instrumentation, Measurement and Metrology
Received: Apr. 8, 2022
Accepted: Jun. 8, 2022
Published Online: Feb. 6, 2023
The Author Email: LUO Donggen (dgluo@aiofm.ac.cn)
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