Zhong WANG, Dong-dong WAN, Chuang SHAN, Yue-e LI, Qing-guo ZHOU. A Denoising Method Based on Back Propagation Neural Network for Raman Spectrum[J]. Spectroscopy and Spectral Analysis, 2022, 42(5): 1553
- Spectroscopy and Spectral Analysis
- Vol. 42, Issue 5, 1553 (2022)
Fig. 1. Comparison of different denoising methods for 20 db noise
Fig. 2. Comparison of different denoising methods for 30 db noise
Fig. 3. RMSE and SNR changes of different wavelets and different thresholds for 20 db noise
Fig. 4. RMSE and SNR changes of different wavelets and different thresholds for 30 db noise
Fig. 5. RMSE and SNR changes of different wavelet decomposition levels for different noise
Fig. 6. RMSE and SNR changes of different denoising methods for 20 db noise
Fig. 7. RMSE and SNR changes of different denoising methods for 30 db noise
Fig. 8. Raman Spectrum of experimental sample
(a): Noisy Raman spectrum; (b): Denoised spectrum by analyst; (c): Denoised spectrum by BP network
(a): Noisy Raman spectrum; (b): Denoised spectrum by analyst; (c): Denoised spectrum by BP network
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Table 1. Parameter settings of various methods
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Table 2. Comparison of various methods for RMSE and SNR
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Table 3. Comparison of various methods for RMSE and SNR on different Noise
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