The process of spectral unmixing typically involves the following steps:
1. Data Collection: Spectral data is collected using advanced techniques like hyperspectral imaging or Raman spectroscopy. 2. Spectral Library Creation: Reference spectra for known materials are compiled to create a spectral library. 3. Decomposition: Mathematical algorithms, such as non-negative matrix factorization (NMF) or principal component analysis (PCA), are used to decompose the mixed spectral signal into its constituent spectral signatures. 4. Quantification: The relative abundance of each component is determined based on the decomposed spectra.
