CAD modelling in reverse engineering: Generating C²-continuous planar B-spline curves for free-form shapes

摘要

In Reverse Engineering, the result of surface reconstruction of the scanned objects can neither be recognized nor used for further analysis using the existing CAD system. The surface model needs to be transformed into a CAD model. Generally, conversion of a surface model is done through feature recognition process. For symmetrical shapes of mechanical components such as block, polygon, cylinder, and sphere, the existing CAD software can recognize the shape. While, for asymmetric or free-form shapes the recognition process should be done through curve fitting.