Negative Knowledge and a Novel Approach to Support MCAD Education

Ferruccio Mandorli, Harald E. Otto
2013 Computer-Aided Design and Applications  
We present a novel approach to reconstructing the surface of a 3D object using a point cloud of its surface scan. The objective is to obtain an editable CAD model that is manufacturable and describes accurately the structure and topology of the point cloud. The point cloud is sliced into cross sections. Each cross section is represented as a 2D point set. Then, a collection of interpolating curves is computed that describes each cross section accurately, using computational geometry methods on
more » ... he corresponding point set. The organized point set for the surface reconstruction is obtained from these curves. Freeform transformations may also be applied, allowing high level global editing of the final object.
doi:10.3722/cadaps.2013.1007-1020 fatcat:renpjne4z5cpncu32qb4nyxu34