An integrated reverse engineering approach to reconstructing free-form surfaces |
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Affiliation: | 1. University of Maryland, College Park, United States;2. Independent Researcher, Delhi, India;3. IIT Jodhpur, Jodhpur, India;1. UMR SFL 7023, Paris 8 University, 2 rue de la Liberte, Saint-Denis F-93526, France;2. CHArt Laboratory – EA 4004, Paris 8 University, 2 rue de la Liberte, Saint-Denis F-93526, France;1. Advanced Digital Sciences Center, 138632, Singapore;2. Key Laboratory of Dependable Service Computing in Cyber Physical Society, Ministry of Education, Chongqing 430044, China;3. School of Software Engineering, Chongqing University, Chongqing 430044, China |
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Abstract: | An integrated reverse engineering approach to generating free-form surfaces has been developed to create CAD-compatible free-form surface models with a coordinate measurement machine and a touch trigger probe. The approach integrates data digitization and surface modelling to obtain an efficient and accurate digitization process with a collisionfree exploration path, and to reconstruct least-squares bi-cubic B-spline surface models for rapid product prototyping. The whole approach is divided into two stages: the planning of boundary digitization; and the adaptive model-based digitizing process (AMDP). The planning of boundary digitization defines the exploration surface region. The AMDP then automatically explores the whole measured surface region with a collision-free exploration path, continuing until a satisfactory surface model corresponding to the user's specified digitizing accuracy is obtained. This approach significantly reduces the product development lead time and obtains a surface model with controlled digitizing accuracy. The validity and applicability of this approach are demonstrated by three practical industrial examples. |
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