In recent years, the technologies in the reverse engineering have become more and more important not only for the engineering field but also many other fields. In fact the reverse engineering is exploited for comparison of a trial product with CAD data in mechanical industry, retention of ruins and statues of Buddha as digital archives in archaeology, creation of order-made dresses in dress industry and so on. In this article, the technologies of the reconstruction from the point clouds, that is the technologies to generate triangular meshes on the surfaces of the target models, is presented. It can also eliminate some kind of noise which gives the serious influence on mesh generation. Finally some examples demonstrate the applicability of the proposed method.
