Facial similarity analysis: A three-way decision perspective

Abstract

A fundamental task in the sorting of facial photographs is the modelling of pairwise facial similarity. A three-way analysis of facial similarity described in this work uses data obtained from card sorting of a set of facial photographs, done by a group of participants. Participants were asked to sort the photographs into an unrestricted number of piles, using their own judgements of similarity to place similar photos into the same pile. Photos placed into different piles are considered to be dissimilar.