Fig. 1. (a)The TLC result and (b) average hyperspectral of Atractylodes Lancea granules
Sample 1, 2, and 3 were manufactured from Huarun Sanjiu, Jiangyin Tianjiang, and Zhejiang Huisong respectively

Fig. 2. (a) The changing trend of the number of sampled variables, (b) RMSECV values, (c) regression coefficients of each variable with the increasing of sampling runs of CARS, (d) results of selected characteristic wavelengths by RF, (e) discriminant rate and (f) kappa coefficient in different models based on different wavelengths

Fig. 3. Characteristic wavelength selection results based on (a) preliminary selection and (b) CA method and (c) correlation analysis among characteristic wavelengths selected by CARS in the distinguish study of Atractylodes Lancea granules from different manufactures

Fig. 4. The distinguish result map of Atractylodes Lancea granules from different manufacturers based on CARS-CA-LS-SVM model

Table 1. Selected characteristic wavelengths in the distinguish study of Atractylodes Lancea granules from different manufactures based on hyperspectral technology

Table 2. Model discrimination based on characteristic wavelengths in the distinguish study of Atractylodes Lancea granules from different manufactures