1. A computerized method for transforming digital images representing a plurality of individuals into one or more predictors of characteristics of a pair of individuals, comprising: for each individual of a plurality of pairs of individuals, storing one or more digital images representing the individual in a memory operably connected to a digital computer; annotating the one or more digital images with a plurality of reference points; associating a data set about the individual with the one or more digital images representing the individual; computing, with the digital computer, one or more metrics using measurements derived from the plurality of reference points; for each of the plurality of pairs of individuals, associating a pairwise data set about the pair with the one or more digital images representing the individuals comprising the pair; and determining one or more indicators usable for predicting characteristics of another pair of individuals.