ADAPTIVE CONSTRAINT AND 3D SKETCH-BASED DEFORMATION FOR INTERACTIVE FREE FORM SURFACE STYLING

Li Han, Raffaele De Amicis, Giuseppe Conti

2006

Abstract

This paper tries to answer to the increasing demand in the domain of conceptual design for more intuitive methods for creating and modifying free-form curves and surfaces. This is done by addressing the issue of physical-based shape control by free hand spline sketching instead of the tedious mathematical parameters adjustment. We present a novel approach capable of matching the designer’s requirements in terms of quality and accuracy of the produced model. The algorithm adopts a simple 3D sketching technique and a finite element deformation method to create free-form models. In the method proposed the user applies interactive sculpting to modify a surface in a predicable way. Our algorithm automatically extracts the key points from sketched target curve and adaptively distributes the external-force constraints which impose the force energy on the corresponding control vertexes along their normal. We have limited the influence of these constraints to a localized area by attaching an influence factor to each control vertex of the parent surface. The smoothing function introduced later further solves the transition interval and it provides for symmetry features. This proposed method is finally implemented in a 3D scene environment and the results show how the designers intuitively and exactly control the shape of the surface.

References

  1. Barr, A. H.,1984 , “Global & local deformations of solid primitives,” Computer Graphics, 18(3), 21-30.
  2. Güdükbay, U. and Üzgüç, B., 1990, “Free-form solid modeling using deformations,” Computer Graphics, 14(3/4), 491-500.
  3. Sederberg, T. W. and Parry, R.,1986, “Free-form deformations of solid geometric models,” ComputerGraphic, 20(4), 151-160.
  4. Coquillart, S., 1990, “Extended free-form deformation: A sculpting tool for 3D geometric modeling,” Computer Graphics, 24(4), 187-196.
  5. Bechmann, D., 1994, “Space deformation models survey,” Computer & Graphics, 18(4), 571-586.
  6. Kalra, P., Mangili A. and Thalmann, N., 1992, “Simulation of facial muscle actions based on rational freeform deformation,” Computer Graphics Forum, 2(3), 59-69.
  7. Lamousin, H. J. and Waggenspack, W. N., 1994, “NURBS based freeform deformation,” IEEE Computer Graphics & Applications, 14(6), 59-65.
  8. Griessmair, J. and Purgathofer, W., 1989, Deformation of solids with trivariate B-spline,” Proc. EUROGRAPHICS'89, 137-148.
  9. Coquillart S. and Jancene, P., 1991, “Animated free-form deformation: an interactive animation technique,” Computer Graphics, 25(4), 23-26.
  10. Chadwick, J. E., Haumann, D. and Parent, R. E., 1989, “Layered construction for deformable animated characters,” Computer Graphics, 23(3), 243-252.
  11. Borrel, P. and Rappoport, A., 1994, “Simple constrained deformations for geometric modeling and interactive design,” ACM Transactions on Graphics, 13(2), 137- 155.
  12. Xiaogang, J., Youfu L. and Qunsheng, P. , 2000, “General constrained deformation based on generalized metaballs,” Computer & Graphics, 24(2), 219-231.
  13. Léon, J. C. and Veron, P., 1997, “Semiglobal deformation and correction of free-form surface using a mechanical alternative,” The Visual Computer, 13(3), 109-126.
  14. Léon, J. C. and Trompette, P. , 1995, “A new approach towards freeform surfaces control,” C.A.G.D, 12(4), 395-416.
  15. Léon, J. C., 1991, “Modé lisation des courbes et des surfaces pour la CFAO,” hermès, paris.
  16. Li, Han, Giuseppe, Conti, Raffaele, De. Amicis (2005), “Freehand 3D curve recognition and oversketching,” Eurographics UK Chapter 2005,187-193.
  17. Chesutet, V. and Catalano, C.E., Pernot, J. P. “ 3D Sketching with Fully Free Form Deformation Features for Aesthetic Design.” EUROGRAPHICS Workshop, Sketch-based Interfaces and Modeling, 2004, 9-18.
  18. Michalik, P. and Brüderlin, B.D., “Constraint-based Design of B-spline Surface from Curves.” ACM Symposium on Solid Modeling and Applications, 2004, 213- 220.
  19. DIETZ, U. , “Creation of Fair B-Spline Surface Fillets” In Creating Fair and Shape Preserving Curves and Surfaces. B.G. Teubner, Stuttgart, 1998. 2, 3, 8 Fontana, M., Giannini, F., Meirana, F., “Free Form Features for Aesthetic Design.” Int. Jou. Shape Modelling, vol. 6, n°2, 2000, 273-302.
Download


Paper Citation


in Harvard Style

Han L., De Amicis R. and Conti G. (2006). ADAPTIVE CONSTRAINT AND 3D SKETCH-BASED DEFORMATION FOR INTERACTIVE FREE FORM SURFACE STYLING . In Proceedings of the First International Conference on Computer Graphics Theory and Applications - Volume 1: GRAPP, ISBN 972-8865-39-2, pages 392-399. DOI: 10.5220/0001352803920399


in Bibtex Style

@conference{grapp06,
author={Li Han and Raffaele De Amicis and Giuseppe Conti},
title={ADAPTIVE CONSTRAINT AND 3D SKETCH-BASED DEFORMATION FOR INTERACTIVE FREE FORM SURFACE STYLING},
booktitle={Proceedings of the First International Conference on Computer Graphics Theory and Applications - Volume 1: GRAPP,},
year={2006},
pages={392-399},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0001352803920399},
isbn={972-8865-39-2},
}


in EndNote Style

TY - CONF
JO - Proceedings of the First International Conference on Computer Graphics Theory and Applications - Volume 1: GRAPP,
TI - ADAPTIVE CONSTRAINT AND 3D SKETCH-BASED DEFORMATION FOR INTERACTIVE FREE FORM SURFACE STYLING
SN - 972-8865-39-2
AU - Han L.
AU - De Amicis R.
AU - Conti G.
PY - 2006
SP - 392
EP - 399
DO - 10.5220/0001352803920399