Zelin Xu, Dongming Lu, Liping Wang, Guohua Gu. Fringe Non-Uniformity Correction Method Based on Gray Difference Estimation[J]. Acta Optica Sinica, 2021, 41(5): 0511001
- Acta Optica Sinica
- Vol. 41, Issue 5, 0511001 (2021)
Fig. 1. Relative positions of adjacent pixels in 4 cases. (a) Horizontal direction; (b) vertical direction; (c) right diagonal direction; (d) left diagonal direction
Fig. 2. Cumulative strip-type non-uniform noise
Fig. 3. Function diagram of β(C)
Fig. 4. Comparison of images before and after adding noise. (a) Original image; (b) noisy image
Fig. 5. Correction effects of different methods on simulated non-uniformity. (a) Noisy images; (b) SLTH method; (c) CSAR method; (d) proposed method
Fig. 6. Performance curves of different methods on simulated non-uniformity. (a) RMSE; (b) roughness
Fig. 7. Correction effects of different methods on actual non-uniformity. (a) Noisy images; (b) SLTH method; (c) CASR method; (d) proposed method
Fig. 8. Roughness comparison of different methods on actual non-uniformity
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Table 1. Average correction effects of different methods on simulated non-uniformity
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Table 2. Aerage roughness of different methods on actual non-uniformity
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