A is a computer implemented method for converting a non-manifold surface to a manifold surface. The method includes the steps of (a) providing data in a memory of a computer for representing a non-manifold polyhedral surface comprised of a plurality of triangles each bounded by edges and having vertices;...http://www.google.com.hk/patents/US6016153?utm_source=gb-gplus-share專利 US6016153 - Method to convert non-manifold polyhedral surfaces into manifold surfaces
