Fig. 1. Raman spectra of two strains of mycoplasma pneumoniae

Fig. 2. Raman spectral data enhancement

Fig. 3. Original spectrum and spectrum with noise
(a): Original spectrum; (b): Spectrum with Gaussian noise; (c): Spectrum with poisson noise; (d): Spectrum with Multiplicative noise

Fig. 4. 1-D convolutional neural network Raman spectra classification model

Fig. 5. Accuracy and loss curve of 1D-CNN model

Fig. 6. Confusion matrix of different algorithms with three kinds of noises
(a): Gaussian noise; (b): Poisson noise; (c): Multiplicative noise

Fig. 7. ROC curves of different algorithms with three kinds of noises
(a): Gaussian noise; (b): Poisson noise; (c): Multiplicative noise

Fig. 8. Classification results with different algorithms for different intensity of noise