REVERSE ENGINEERING FOR INDUSTRIAL-PLANT CAD MODELS Rodrigo de Toledo

Industrial-plant CAD models are commonly repre-sented by triangular meshes, which do not preserve original information about implicit surfaces used during design. The reverse-engineering algorithms presented in this paper focus on reconstructing im-plicit information, recovering original data. We pro-pose two different approaches, a numerical one and an original topological approach. We explore speci-ficities found in CAD meshes to achieve high ef-fectiveness, reconstructing 90 % of information from massive models (with millions of triangles) after few minutes of processing