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Visible and near infrared (Vis&NIR) spectra of a sample can be treated as a signature, allowing samples to be grouped on basis of their spectral similarities. Vis&NIR spectra combined with LS-SVM have been used to discriminate species and producing area of panax. American Panax quinquefoliumI, Chinese Panax quinquefolium and Panax ginseng were analyzed in this study. Principal component analysis...
This study investigated multi-spectral imaging technique as a rapid method to discriminate the tea category. Tea was spread over the whole images. The images for each sample were captured using a red, near infrared and green channel multi-spectral camera. 320 images were obtained. Three texture features were obtained through the entropy of three channels and then set as the input variables for pattern...
A new method for discrimination of juicy peach varieties by means of Vis-NIR spectroscopy as a non-destructive measurement technique was developed. A relation was established between the reflectance spectra and varieties. Different pretreatment techniques were compared. 3 segments of moving average smoothing and first derivative (average number of left-rightside was 1) is the best. PCA provided the...
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