Wen Liu, Ling Han, Ming Liu, Liangzhi Li. Inversion of Cd Content in Soil Around Mining Area Based on GaoFen-5 Hyperspectral Band Selection[J]. Laser & Optoelectronics Progress, 2023, 60(17): 1728001
- Laser & Optoelectronics Progress
- Vol. 60, Issue 17, 1728001 (2023)
Fig. 1. Correlation analysis between different spectral transformations and Cd content
Fig. 2. Flow chart of CARS-GA band selection
Fig. 3. Key variables selected by CARS method. (a) Change in number of waveband variables; (b) variation of RMSECV
Fig. 4. RMSECV changes with the number of iterations
Fig. 5. Comparison of PLSR model results based on different band selection methods. (a) Comparison chart of R2; (b) comparison chart of RMSE; (c)comparison chart of number of characteristic bands
Fig. 6. Scatter diagram of model verification under transformed spectra by SNV. (a) CC-PLSR; (b) CARS-PLSR; (c) CARS-GA-PLSR
Fig. 7. Scatter diagram of model verification under transformed spectra by FD. (a) CC-PLSR; (b) CARS-PLSR; (c) CARS-GA-PLSR
Fig. 8. Importance diagram of characteristic bands of Cd element
Fig. 9. Distribution map of Cd content in bare area of Tongguan County
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Table 1. Hyperspectral image parameters of GF-5 satellite
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