1. A computer-implemented method for graphically displaying representations of deformations, said deformations defined by comparing a first image of a view of a first scanned object with a second image of a view of a different scanned object, said method comprising the steps of: scanning the objects twice to produce the first and second images; tabulating deformations in a deformation map, comprising at least one three-dimensional vector, wherein each three-dimensional vector describes a geometrical change of a portion of the object when comparing said first and second images; converting said tabulated deformations into a corresponding set of scalar quantities over a preselected range; dividing the range into a set of discrete quantization intervals; assigning a unique color out of a discrete or quasi-continuous set of colors to each quantization interval to produce a color overlay, said color overlay showing the deformations; and simultaneously displaying the color overlay and a representation of at least one of the first and second images, whereby said deformations are shown in color; wherein: the set of scalar quantities is converted from said tabulated deformations by determining at least one parameter from the group of parameters consisting of: magnitude of at least one three-dimensional vector, and scalar value of one component of at least one three-dimensional vector.