Fig. 1. Results of grid search for C and gamma

Fig. 2. Schematic diagram of a spectral dimensionality reduction algorithm
(a): Band selection method; (b): Mathematical transformation method

Fig. 3. The training set accuracy of the three band selection methods for different bands number

Fig. 4. Accuracy of training set and testing set for five methods

Fig. 5. The best 25 bands obtained by mutual information method