| Reverse Engineering is the process of generating 3D solid models of objects whose drawings are unavailable, by making use of digitized point data on the surface of the object. This thesis presents the theories and algorithms along with some implementation issues involved in the development of a reverse engineering modeler. Areas investigated include surface fitting, B-rep solid model generation, incorporation of free form surfaces in the modeler and constraints imposition between the surfaces of the model being reconstructed. The modelling approach used is to reconstruct the model by fitting surfaces to identified faces on the surface of the object and then obtain the edges and vertices by applying constraints/intersecting the fitted faces. These faces, edges and vertices obtained are then assembled into a data structure to generate the boundary representation (B-rep) solid model of the part being reverse engineered. |
