A SWEEP-SURFACE FITTING ALGORITHM FOR REVERSE ENGINEERING

The issue of surface reconstruction from three-dimensional measured da ta has been receiving extensive attention recently. In order to reflec t the original shape design of an existing part geometry, it needs dif ferent surface-fitting algorithms to reconstruct appropriate surface m odels. The objective of this work is to establish a sweep-surface fitt ing strategy for three-dimensional measured data. The sweep surface wa s formed by traversing cross-section curves along a profile curve. A n onlinear parameter optimization process was employed to evaluate the u nknown parameters of the sweep-surface model. The feasibility of the p roposed method has been verified by computer simulation and experiment al results. A comparison study with proposed methods, a B-spline surfa ce fitting and a lofted surface fitting, was also provided. (C) 1998 E lsevier Science B.V. All rights reserved.