Local transformation of facila features

This paper describes methodology for carrying out local transformations of a set of landmarkpoints describingfacialfeatures, so that they provide a good match to a given set of facial landmarkpoints: the landmark points are divided into groups of 'similar 'points that take facial symmetry into account, and the coordinate values of the points within each group are differentially stretched and contracted. The methodology is illustrated by application to sets of 195 facial landmark points.