Abstract: The invention relates to a method for characterizing a target product, including the steps of: (a) forming a bank of spectral data comprising samples; (b) having measured characteristics and spectra; (c) performing a spectral analysis of the target product and comparing the spectrum obtained with the spectral data in the data bank; (d) identifying the “near neighbor” points of the target product; and (e) performing a topological calculation of the characteristic of the target product as a function of the corresponding characteristics of the near neighbor points, based on a weighting linked to the inverse of the distance between the target product and the near neighbor points.

Abstract: The invention relates to a method for generating and optimizing a bank of spectral data that can be used in a method for characterizing a target product by means of topological spectral analysis based on a limited number of available standards, the method consisting of a first step of performing the same spectral analysis on the standards, and, from the spectra obtained, forming a bank of spectral data A at multiple wavelengths and/or wavelength ranges.

Abstract: The present invention relates to a method for characterizing a sample-product X by spectral analysis by means of a novel spectrometer II using information acquired by means of a first spectrometer I.

Abstract: The invention relates to a method for characterising a target product, including the steps of: (a) forming a bank of spectral data comprising samples; (b) having measured characteristics and spectra; (c) performing a spectral analysis of the target product and comparing the spectrum obtained with the spectral data in the data bank; (d) identifying the “near neighbour” points of the target product; and (e) performing a topological calculation of the characteristic of the target product as a function of the corresponding characteristics of the near neighbour points, based on a weighting linked to the inverse of the distance between the target product and the near neighbour points.