Zekai Yao, Yaoyi Cai, Shiwen Li, Yifei Chen. Baseline Correction for Raman Spectroscopy Using Cubic Spline Smoothing Combined with Discrete State Transformation Algorithm[J]. Chinese Journal of Lasers, 2022, 49(18): 1811001
- Chinese Journal of Lasers
- Vol. 49, Issue 18, 1811001 (2022)
Fig. 1. Process of baseline fitting by cubic spline smoothing combined with discrete state transformation algorithm (DSTAspline)
Fig. 2. Estimated results for simulated spectrum and the comparison among airPLS, IAsLS, AWSF and DSTAspline. (a) Estimated baseline and corrected Raman spectrum by DSTAspline; (b) comparison among airPLS, IAsLS, AWSF and DSTAspline
Fig. 3. Estimated results for noise spectrum and the comparison among airPLS, IAsLS, AWSF and DSTAspline. (a) Baseline correction for noise spectrum by DSTAspline; (b) comparison among airPLS, IAsLS, AWSF and DSTAspline
Fig. 4. Applications of the proposed baseline correction method to rhodamine B and tricyclazole. (a) Rhodamine B; (b) tricyclazole
Fig. 5. Comparison among airPLS, IAsLS, AWSF and DSTAspline baseline correction methods for Raman spectra of rhodamine B and tricyclazole. (a) Rhodamine B; (b) tricyclazole
Fig. 6. Original and corrected Raman spectra of peanut oil adulterated with rapeseed oil by the proposed DSTAspline baseline correction method. (a) Original Raman spectra; (b) corrected Raman spectra
Fig. 7. Correlation between actual and predicted values of peanut oil adulteration of rapeseed oil based on PLSR and the proposed baseline correction method. (a) No baseline correction; (b) DSTAspline baseline correction
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Table 1. Comparison among airPLS, IAsLS, ASWF and DSTAspline for simulated Raman spectra
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