Vibrational Spectroscopy Optimized for Accurate Coffee Origin Classification

Credit: The authors

Figure 1. Raw spectra from instruments before pre-processing data treatment: (a) DG-NIR, (b) HSI-NIR, (c) ATR-FTIR, (d) Raman.

« Vibrational Spectroscopy Optimized for Accurate Coffee Origin Classification

Credit: The authors

Figure 3. (a) Pre-processed HSI-NIR spectra measured in reflectance, (b) scores, (c) first loading of (i) Normalisation with MNCN, (ii) SG (1st der, 2nd poly, 15 pts) with MNCN, (iii) Normalisation, SG (1st der, 2nd poly, 15 pts) with MNCN pre-processed HSI-NIR spectra.

« Vibrational Spectroscopy Optimized for Accurate Coffee Origin Classification

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