1. A computerized method for displaying an image of a subject ply of a subject object made of a composite material, said method comprising the steps of: (a) generate and store a reference model of a subject object made of a composite material having a plurality of actual plies, said reference model comprising at least one reference ply in a Non-Euclidian coordinate system and corresponding Euclidian coordinates; (b) three-dimensionally X-ray scan the subject object and use computed tomography (CT) to produce subject multiple slice data comprising subject CT slices that are substantially normal to the actual plies of the subject object; (c) transform points of the reference ply to a Euclidian coordinate system of the subject object and register the points to the subject object; and (d) determine intensity values of transformed and registered points in the Euclidian coordinate system from at least some of the slice data in the vicinity of the transformed points.