Reverse Engineering Closely-Spaced Free-Form Shapes for a Fabric-Over-Body Model
- 1
- 2
- 3
Abstract
This paper presents a case study of reverse engineering closely-spaced free-form shapes. The raw point cloud data captured from a body scanner was processed to filter most noise and redundancy. They were used to generate meshes through triangulation of points. Upon removal of inconsistencies resulted from residual noise, the clean-up meshes were then used to reconstruct the free-form surfaces that represented a fabric layer and a human body surface. The solid produced between these two surfaces is the fabric-over-body model. It helped generate a FEA (finite-element analysis) mesh with quality checks, such as distortion and stretch, were performed for all the meshed tetrahedral elements. The purpose is to prepare a FEA-ready model for future CFD (computational fluid dynamics) analysis.
- J. Bohm and M. Pateraki, “From Point Samples to Sur-faces—On Meshing and Alternatives,” Image Engineering and Vision Metrology’ Proceedings of the ISPRS Commission V Symposium, Dresden, 25-27 September 2006. http://www.ifp.uni-stuttgart.de/publications/2006/boehm_pateraki06_ISPRS_CommV_Dresden.pdf
- K. Soni, D. Chen and T. Lerch, “Parametrerization of Prismatic Shapes and Re-construction of Free-Form Shapes in Reverse Engineering,” International Journal of Advanced Manufacturing Technology, Vol. 41, No. 9, 2009, pp. 948-959. doi:10.1007/s00170-008-1550-1
- D. Rogers, “An Introduction to NURBS with Historical Perspective,” Morgan Kaufmann Publishers, San Francisco, 2001.
- A. Wulamu, M. Goetting and D, Zeckzer, “Approximation of NURBS Curves and Surfaces Using Adaptive Equidistant Parameteriza-tions,” Tsinghua Science & Technology, Vol. 10, No. 3, 2005, pp. 316-322. doi:10.1016/S1007-0214(05)70075-4
- Dassault Systems, CATIA V5, 2011. http://www.3ds.com/products/catia/portfolio/catia-v5/catia-v5r21/
- Siemens NX, I-DEAS, 2011. http://www.plm.automation.siemens.com/en_us/products/nx/
- Vitronic, VITUS/Smart 3D Body Scanner, 2011. http://www.vitronic.de/en/bodyscannen/complete-body-scanning/
- SearchStorage.com, Charge Coupled Device Camera, 2011. http://searchstorage.techtarget.com/sDefinition/0,,sid5_gci295633,00.html
- T. Grimm, “Reverse Engineering: Magic, Mystique, and Myth,” Desktop Engineering, Vol. 10, No. 12, 2005, pp. 32-37.
- Rapidform, Intelligent Registration, 2011. http://www.rapidform.com/57
- D. Gibson, “Parametric Feature Recognition and Surface Construction from Digital Point Cloud Scans of Mechanical Parts,” Thesis, University of Oklahoma, Norman, 2004.
- P. Waterman, “3D Data at Work,” Desktop Engineering, Vol. 9, No. 11, 2004, pp. P18-P23.
- J. Cabello, “Toward Quality Surface Meshing,” Proceedings of 12th Meshing International Roundtable, Santa Fe, 14-17 September 2003, pp. 201-213.
- A. Fabri, P. Al-liez and M. Yvinec, “Triangulations and Mesh Generation in Computer Geometry Algorithms Library,” CGAL Day of the 10th Anniversary of LIAMA, Beijing, 19 January 2007. http://www.cgal.org/Events/Liama_Beijing_2007_documents/TriangulationsInCGAL.pdf
- S. Oudot, “Delaunay Triangulation,” Course Handouts, Stanford University, Palo Alto, 2011. http://graphics.stanford.edu/courses/cs368-06-spring/handouts/Delaunay_1.pdf