Abstract
We shall reconstruct two or/and three dimensional geometry from the image data obtained by X-ray CT scanning equipment for reverse engineering. To this end, instead of using Bezier and B-splines, as well as NURBS, we shall introduce a new method to approximate geometry by using the finite element approximation applied in FOA (First Order Analysis) that has been developed in design of, for example, automotive body structures. Furthermore, FOA approach is applied not only to approximate a given geometry but also to generate a finite element mesh of a curved shell.