Ze Li, Jun Wei, Xiaoxian Huang, Yuyu Tang. Research on onboard radiation calibration scheme based on pixe-level adaptive gain imaging system[J]. Infrared and Laser Engineering, 2024, 53(2): 20230561
- Infrared and Laser Engineering
- Vol. 53, Issue 2, 20230561 (2024)
Fig. 1. Simple schematic diagram of adaptive gain imaging system
Fig. 2. Encoding process diagram of channel programming table for adaptive gain imaging mode
Fig. 3. Coding process diagram of calibration mode channel programming table
Fig. 4. Flow Chart for calculating the onboard gain radio coefficient
Fig. 5. Image of four gains and adaptive gains in exterior imaging
Fig. 6. Strip noise removal effect diagram
Fig. 7. K -Means algorithm flowchart
Fig. 8. Gains with the highest and second most occurrences and adaptive gain distribution of channel 13
Fig. 9. Schematic diagram of elbow method to search for K value in K -Means classification
Fig. 10. Schematic diagram of K -Means classification results
Fig. 11. Raw data points obtained by classifying and averaging two gain levels in several spectral channels
Fig. 12. Measurement results of the ratio coefficient between MG and LG for channels 1, 2, 3, 14, and 15
Fig. 13. Measurement results of the ratio coefficient between LG and ULG for channels 2, 3, 4, and 5
Fig. 14. Comparison of low gain inversion and high gain output for channel 2 external imaging
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Table 1. Two gains with highest number of occurrences in each spectral channel
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Table 2. MG /LG adjacent gain ratio coefficient of exterior imaging
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Table 3. LG /ULG adjacent gain ratio coefficient of exterior imaging
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Table 4. Inversion of image quality in outfield imaging
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