Abstract
This chapter presents a different use of sketch-based modeling, namely the modeling of complex objects from a single sketch, illustrated by the examples of dressing and hairstyling a virtual character. Knowing the nature of the object being modeled eases the extraction of information from a sketch, so that a single sketch depicting a front view (and optionally a second one from the back or side) is sufficient to specify these complex 3D shapes. We show how different levels of prior knowledge about the object being modeled, from basic rules of thumb to more intricate geometric or physically based properties, can be used to interpret the sketch strokes and to infer the missing 3D information, leading to different degrees of visual realism. In addition to discussing practical solutions for the sketch-based modeling of garments and hair that save several orders of magnitude of user time compared to standard 3D modeling methods, this chapter provides the basis of a general methodology towards the design of sketch-based interfaces for complex models.
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Anastacio, F., Sousa, M.C., Samavati, F., Jorge, J.: Modeling plant structures using concept sketches. In: Non Photorealistic Animation and Rendering (NPAR), Annecy, France (2006)
Anastacio, F., Prusinkiewicz, P., Sousa, M.C.: Sketch-based parameterization of l-systems using illustration-inspired construction lines. In: Eurographics Workshop on Sketch-Based Interfaces and Modeling, Annecy, France (2008)
Autodesk: 3dsmax (2008). http://autodesk.com/3dsmax
Autodesk: Maya nCloth (2008). http://autodesk.com/maya
Bertails, F., Audoly, B., Querleux, B., Leroy, F., Lévêque, J.L., Cani, M.P.: Predicting natural hair shapes by solving the statics of flexible rods. In: Dingliana, J., Ganovelli, F. (eds.) Eurographics (Short Papers). Eurographics (2005)
Bertails, F., Audoly, B., Cani, M.P., Querleux, B., Leroy, F., Lévêque, J.L.: Super-helices for predicting the dynamics of natural hair. In: Proceedings of SIGGRAPH (2006)
Cohen, J., Hughes, J., Zeleznik, R.: Harold: A world made of drawings. In: Non Photorealistic Animation and Rendering (NPAR), Annecy, France (2000)
Decaudin, P., Julius, D., Wither, J., Boissieux, L., Sheffer, A., Cani, M.P.: Virtual garments: A fully geometric approach for clothing design. Computer Graphics Forum (Eurographics’06 Proc.) 25(3) (2006)
Google Sketchup (2008). http://sketchup.google.com/
Gunnarsson, O., Maddock, S.: Sketching faces. In: Eurographics Workshop on Sketch-Based Interfaces and Modeling (2008)
Ijiri, T., Owada, S., Okabe, M., Igarashi, T.: Floral diagrams and inflorescences: interactive flower modeling using botanical structural constraints. ACM Transactions on Graphics 24(3), 720–726 (2005)
Kim, T.Y., Neumann, U.: Interactive multiresolution hair modeling and editing. ACM Transactions on Graphics 21(3), 620–629 (2002) Proceedings of ACM SIGGRAPH 2002
Lee, D.W., Ko, H.S.: Natural hairstyle modeling and animation. Graphical Models 63(2), 67–85 (2001)
Levin, D.: The approximation power of moving least-squares. Mathematics of Computation 67(224), 1517–1531 (1998)
Okabe, M., Owada, S., Igarashi, T.: Interactive design of botanical trees using freehand sketches and example-based editing. Computer Graphics Forum (Proceedings of Eurographics) (2005)
Peacock, J.: La Mode du XX Siecle. Thames & Hudson (2003)
Rose, K., Sheffer, A., Wither, J., Cani, M.P., Thibert, B.: Developable surfaces from arbitrary sketched boundaries. In: Eurographics Symposium on Geometry Processing. Eurographics (2007)
Sheffer, A., Lévy, B., Mogilnitsky, M., Bogomyakov, A.: ABF++ : Fast and robust angle based flattening. ACM Transactions on Graphics (2005)
Turquin, E., Wither, J., Boissieux, L., Cani, M.P., Hughes, J.: A sketch-based interface for clothing virtual characters. IEEE Computer Graphics & Applications (2006)
Watanabe, N., Igarashi, T.: A sketching interface for terrain modeling. In: SIGGRAPH 2004 Posters. ACM, New York (2004)
Wither, J., Bertails, F., Cani, M.P.: Realistic hair from a sketch. In: Shape Modeling International (2007)
Wither, J., Boudon, F., Cani, M.P., Godin, C.: Structure from silhouettes: a new paradigm for fast sketch-based design of trees. Computer Graphics Forum 28(2), 541–550 (2009) Special Issue: Eurographics 2009
Acknowledgements
Thanks to all our collaborators on sketch-based interfaces for garments and hair: Florence Bertails, Laurence Boissieux, Philippe Decaudin, John Hughes, Dan Julius, Kenneth Rose, Boris Thibert, Emmanuel Turquin and Alla Sheffer. Thanks to the Marie-Curie Project Visitor for funding this research.
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Wither, J., Cani, MP. (2011). Dressing and Hair-Styling Virtual Characters from a Sketch. In: Jorge, J., Samavati, F. (eds) Sketch-based Interfaces and Modeling. Springer, London. https://doi.org/10.1007/978-1-84882-812-4_14
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DOI: https://doi.org/10.1007/978-1-84882-812-4_14
Publisher Name: Springer, London
Print ISBN: 978-1-84882-811-7
Online ISBN: 978-1-84882-812-4
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