Reverse engineering of complex shape using surface-lofting

Jiing Yih Lai, Chih Young Lin, Chung Shan Liou

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


The complexity and variety of the shape of practical objects often limit the applications of the reverse engineering algorithms available in the literature. An effective reverse engineering algorithm should not only be able to model complex object shape and convert the models to other CAD systems, but also be able to control the accuracy of the models generated. A reverse engineering approach, incorporating a curve-fitting algorithm and a surface-lofting algorithm, was proposed in this work for accurate and complex shape modeling from three-dimensional digitized data of the objects. The curve fitting algorithm was used to fit each array of measured data to obtain section curves first, and then the surface-lofting algorithm was implemented to fit the section curves into a B-spline lofted surface. The digitizing process is also important to the success of the reverse engineering. Two kinds of digitizing processes, laser digitizing and digitizing with a touch trigger probe, were addressed also. Both computer simulation on an isolated sculptured surface and experimental results from a bottle model and a shoe last example have demonstrated that the proposed reverse engineering approach is feasible for accurate and complex shape modeling.

Original languageEnglish
Pages (from-to)221-230
Number of pages10
JournalJournal of the Chinese Society of Mechanical Engineers, Transactions of the Chinese Institute of Engineers, Series C/Chung-Kuo Chi Hsueh Kung Ch'eng Hsuebo Pao
Issue number3
StatePublished - Jun 1996


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