Ningzhi YUAN, Shaohua CHEN, Taotao MU. Research on classification of plastics by Raman spectroscopy combined with deep learning algorithm[J]. Optical Instruments, 2023, 45(5): 35
- Optical Instruments
- Vol. 45, Issue 5, 35 (2023)
Fig. 1. Flow chart of Raman spectrum classification
Fig. 2. Average Raman spectra of four types of plastics
Fig. 3. Original Raman spectra
Fig. 4. Smoothed filtered Raman spectra
Fig. 5. Baseline correction Raman spectra
Fig. 6. Spectral classification structure of one-dimensional convolutional neural network
Fig. 7. Training flow chart of backpropagation algorithm
Fig. 8. 1-D Training loss rate and accuracy curve of CNN network
Fig. 9. Comparison of classification accuracy of the four models before and after preprocessing
Fig. 10. Influence of different intensity noise on model classification accuracy
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Table 1. Sample name and main raw materials
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Table 2. Classification accuracy of different models
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