• Spectroscopy and Spectral Analysis
  • Vol. 40, Issue 11, 3567 (2020)
Ye HUANG1、1, Li LIU1、1, Jing LIANG1、1, Hong-xia YANG1、1, Xiao-li LI1、1, and Ning XU1、1
Author Affiliations
  • 1[in Chinese]
  • 11. Department of Pharmacy, Zhejiang Skin Disease Prevention and Treatment Center, Deqing 313200, China
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    DOI: 10.3964/j.issn.1000-0593(2020)11-3567-06 Cite this Article
    Ye HUANG, Li LIU, Jing LIANG, Hong-xia YANG, Xiao-li LI, Ning XU. Research on the Visualization Differentiation of Atractylodes Lancea Granule Manufactures Based on Hyperspectral Imaging Technology Combined With the Selection of Characteristic Wavelengths[J]. Spectroscopy and Spectral Analysis, 2020, 40(11): 3567 Copy Citation Text show less

    Abstract

    In order to provide theoretical guidance for the visualization differentiation of Atractylodes Lancea granules based on hyperspectral imaging, competitive adaptive reweighted sampling (CARS) and correlation analysis (CA) was used to select two characteristic wavelengths. A new method for traceability of Atractylodes Lancea granules using near-infrared hyperspectral imaging technology was proposed. Hyperspectral image of 150 Atractylodes Lancea granules from three manufacturers in the range of 874~1 734 nm, extracting the spectral reflectance value of the region of interest (ROI) as the input variables for the identification model, and using the proximity algorithm (k-nearest neighbor, KNN), back-propagation neural networks (BPNN), partial least squares-discrimination analysis (PLS-DA) and least square support vector machine (LS-SVM) to establish discriminant models of four algorithms (classifiers). The discrimination effect of three different manufacturers of Atractylodes Lancea granules was discriminated by the evaluation criteria of the model effect (predictive set overall discriminant rate and kappa coefficient). Except for the KNN model, the discriminant rate of the prediction set was 100%, and the kappa coefficient was 1. In order to speed up the operation, this study selected the characteristic wavelengths by CARS, random frog (RF), successive projections algorithm (SPA) and sequential forward selection (SFS) algorithm, and used CARS, RF, SFS, and SPA combined with the CA algorithm to achieve four sets of optimal wavelengths. Four (975, 1 220, 1 419, 1 476 nm), two (1 005, 1 442 nm), four (924, 1 005, 1 419, 1 584 nm) and three (948, 1 146, 1 412 nm) optimal wavelengths were obtained respectively, and KNN, BPNN, PLS-DA, and LS-SVM discriminant models were established. Therefore, in the case of screening three optimal algorithms, the best modeling effect that can be obtained with fewer feature wavelengths was: the overall discriminant rate of the prediction set in the CARS-CA-LS-SVM model was 100%, the kappa coefficient was 1. Finally, the spectral data of each pixel of the wavelength variables selected by CARS-CA were input into the LS-SVM model, and the discrimination results were visually displayed in different colors. This study provides a method for the rapid and lossless traceability of Atractylodes Lancea granules product, and provides technical support for the rapid supervision of related organizations in the future.
    Ye HUANG, Li LIU, Jing LIANG, Hong-xia YANG, Xiao-li LI, Ning XU. Research on the Visualization Differentiation of Atractylodes Lancea Granule Manufactures Based on Hyperspectral Imaging Technology Combined With the Selection of Characteristic Wavelengths[J]. Spectroscopy and Spectral Analysis, 2020, 40(11): 3567
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