Chuling Deng, Jingjing Tong, Minguang Gao, Xiangxian Li, Yan Li, Xin Han, Wenqing Liu. Simulation of Tomographic Reconstruction Algorithms for Open-Path Fourier Transform Infrared Spectroscopy[J]. Acta Optica Sinica, 2019, 39(7): 0707001
- Acta Optica Sinica
- Vol. 39, Issue 7, 0707001 (2019)
Fig. 1. Reconstruction model
Fig. 2. (a) Light path arrangement and (b) single-peak gas concentration field
Fig. 3. Effect of relaxation factors α on reconstruction results. (a) Effect on nearness A; (b) effect on correlation coefficient R
Fig. 4. Reconstruction results under different grid resolutions. (a)-(c) ART; (d)-(f) MLEM
Fig. 5. Reconstruction results under different concentration fields. (a) Original concentration field of single peak; (b) original concentration field of double peak; (c) single peak, ART algorithm; (d) double peak, ART algorithm; (e) single peak, MLEM algorithm; (f) double peak, MLEM algorithm
Fig. 6. Error analysis under different noise levels. (a) A; (b) R
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Table 1. Overall reconstruction accuracy under different grid resolutions
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Table 2. Detail reconstruction accuracy under different grid resolutions
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Table 3. Overall reconstruction accuracy of different source locations
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Table 4. Detail reconstruction accuracy of different source locations
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Table 5. Overall reconstruction accuracy of different concentration fields
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Table 6. Detail reconstruction accuracy under different concentration fields
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Table 7. Evaluation indexes of reconstruction under different noise levels
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