Lian-jie LI, Shu-xiang FAN, Xue-wen WANG, Rui LI, Xiao WEN, Lu-yao WANG, Bo LI. Classification Method of Coal and Gangue Based on Hyperspectral Imaging Technology[J]. Spectroscopy and Spectral Analysis, 2022, 42(4): 1250
- Spectroscopy and Spectral Analysis
- Vol. 42, Issue 4, 1250 (2022)
Fig. 1. Coal samples (a) and gangue samples (b)
Fig. 2. Hyperspectral imaging system (a) and process of spectrum extraction (b)
Fig. 3. The original spectral curves in the range of 474~940 nm (a) and 1 235~2 477 nm (b)
Fig. 4. The process of variable selection by CARS in the spectral ranges of (a) Vis/NIR and (b) NIR
Fig. 5. The results of variable selection by SPA over the spectral ranges of (a), (c) Vis/NIR and (b), (d) NIR
Fig. 6. Grayscale images of some samples and corresponding classification visualization
red: Coal; blue: Gangue
red: Coal; blue: Gangue
|
Table 1. Comparison of different classification models based on the full-band spectra
|
Table 2. The prediction results of different classification models based on characteristic wavelengths
Set citation alerts for the article
Please enter your email address
© Copyright 2018-2021 | Chinese Laser Press. All Rights Reserved 沪ICP备15018463号-20