The calculation of basis spectra from a spectral library is an important prerequisite of any compact imaging spectrometer. In this paper. we compare the basis spectra computed by singular-value decomposition (SVD) and principal component analysis (PCA) in terms of estimation performance with respect to resolution. presence of noise. https://www.spidertattooz.com/Veuve-Ambal-Rose-Cremant-de-Bourgogne-750ml/