tegevus, mille eesmärgiks on segupiksli spekter lahutada komponentideks ja anda komponentidele kaal (nt pikslis on 50% rukkipõldu, 20% lehtmetsa, 20% veekogu ja 10% mingit määratlemata objekti klassi), the procedure by which the measured spectrum of a mixed pixel is decomposed into a collection of constituent spectra, or endmembers, and a set of corresponding fractions or abundances that indicate the proportion of each endmember present in the pixel