Identification of authenticity, quality and origin of saffron using hyperspectral imaging and multivariate spectral analysis
SPECTROSCOPY LETTERS(2020)
摘要
This paper is conducted to identify the authenticity, quality, and origin of saffron using hyperspectral imaging and multivariate spectral analysis. Reflectance spectra were extracted from hyperspectral images of saffron. Successive projections algorithm, genetic algorithm, uninformative variable elimination, and competitive adaptive reweighted sampling were used to select characteristic wavelengths. Back propagation neural network model was established based on the selected wavelengths. Results showed that the model combining competitive adaptive reweighted sampling with back propagation neural network achieved the best performance. Its prediction accuracy of the one-adulterated, three-domestic and two-imported saffron was 100, 95, 94, 100, 83, and 96%, respectively.
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关键词
Hyperspectral imaging,multivariate spectral analysis,neural network,saffron identification,variable selection
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