The two main approaches to creating a CAD object from scan data are parametric modeling and surfacing. Parametric modeling involves creating sketches and features and is similar to modeling in most CAD software packages, but the mesh is used as a reference for extracting geometry. The surfacing workflow involves creating 3D curves and patches so that a NURBS surface can be fit to the mesh. Depending on what the user’s end goal is, either approach can be utilized.

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