


In biometrics, often histograms are used to represent biometric samples (example pictures of faces). Subsequently the histograms are compared by a classifier to determine whether the biometric samples originate from the same individual or not. Nowadays several classifiers are used for this purpose, however most of them are relatively simple. Our starting point is a new classifier that computes a likelihood ratio, assuming that the histograms can be modelled as a sample from a multinomial distribution.