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Realistic Rendering and Animation of Knitwear
January-March 2003 (vol. 9 no. 1)
pp. 43-55

Abstract—We present a framework for knitwear modeling and rendering that accounts for characteristics that are particular to knitted fabrics. We first describe a model for animation that considers knitwear features and their effects on knitwear shape and interaction. With the computed free-form knitwear configurations, we present an efficient procedure for realistic synthesis based on the observation that a single cross section of yarn can serve as the basic primitive for modeling entire articles of knitwear. This primitive, called the lumislice, describes radiance from a yarn cross section that accounts for fine-level interactions among yarn fibers. By representing yarn as a sequence of identical but rotated cross sections, the lumislice can effectively propagate local microstructure over arbitrary stitch patterns and knitwear shapes. The lumislice accommodates varying levels of detail, allows for soft shadow generation, and capitalizes on hardware-assisted transparency blending. These modeling and rendering techniques together form a complete approach for generating realistic knitwear.

[1] K. Anjyo, Y. Usami, and T. Kurihara, “A Simple Method for Extracting the Natural Beauty of Hair,” Computer Graphics (Proc. SIGGRAPH '92), vol. 26, no. 2, pp. 111-120, July 1992.
[2] D. Baraff and A. Witkin, “Large Steps in Cloth Simulation,” Proc. SIGGRAPH '98, pp. 43-54, July 1998.
[3] D.E. Breen, D.H. House, and P.H. Getto, “A Physically-Based Particle Model of Woven Cloth,” The Visual Computer, vol. 8, no. 5-6, pp. 264-277, June 1992.
[4] D.E. Breen, D.H. House, and M.J. Wozny, “Predicting the Drape of Woven Cloth Using Interacting Particles,” Proc. SIGGRAPH '94, pp. 365-372, July 1994.
[5] D.E. Breen, D.H. House, and M.J. Wozny, “A Particle-Based Model for Simulating the Draping Behavior of Woven Cloth,” Textile Research J., vol. 64, no. 11, pp. 663-685, Nov. 1994.
[6] S. Chandrasekar, Radiative Transfer. New York: Dover Publications, 1960.
[7] M. Courshesnes, P. Volino, and N.M. Thalmann, “Versatile and Efficient Techniques for Simulating Cloth and Other Deformable Objects,” Proc. SIGGRAPH '95, pp. 137-144, Aug. 1995.
[8] K.J. Dana, B. van Ginneken, S.K. Nayar, and J.J. Koenderink, “Reflectance and Texture of Real-World Surfaces,” ACM Trans. Graphics, vol. 18, no. 1, pp. 1-34, Jan. 1999.
[9] B. Eberhardt, A. Weber, W. Straßer, “A Fast, Flexible, Particle-System Model for Cloth Draping,” IEEE Computer Graphics and Applications, vol. 16, no. 5, pp. 52-60, Sept. 1996.
[10] D.B. Goldman, “Fake Fur Rendering,” Proc. SIGGRAPH '97, pp. 127-134, Aug. 1997.
[11] S.J. Gortler, R. Grzeszczuk, R. Szeliski, and M.F. Cohen, “The Lumigraph,” Proc. SIGGRAPH '96, pp. 43-54, Aug. 1996.
[12] E. Gröller, R.T. Rau, and W. Straßer, “Modeling and Visualization of Knitwear,” IEEE Trans. Visualization and Computer Graphics, vol. 1, no. 4, pp. 302-310, Dec. 1995.
[13] E. Gröller, R.T. Rau, and W. Straßer, “Modeling Textiles as Three Dimensional Textures,” Proc. Eurographics Rendering Workshop 1996, pp. 205-214, June 1996.
[14] Harmony, The Harmony Guide to Knitting Techniques. Collins & Brown, 1992.
[15] D.H. House and D.E. Breen, Cloth Modeling and Animation. Natick, Mass.: A K Peters, 2000.
[16] J.T. Kajiya and T.L. Kay, “Rendering Fur with Three Dimensional Textures,” Computer Graphics (Proc. SIGGRAPH '89), vol. 23, no. 3, pp. 271-280, July 1989.
[17] J. Lengyel, “Real-Time Fur,” Proc. Eurographics Rendering Workshop 2000, pp. 243-256, June 2000.
[18] M. Levoy and P. Hanrahan, “Light Field Rendering,” Proc. SIGGRAPH '96, pp. 31-42, Aug. 1996.
[19] T. Lokovic and E. Veach, “Deep Shadow Map,” Proc. SIGGRAPH 2000, pp. 385-392, July 2000.
[20] M. Meißner and B. Eberhardt, “The Art of Knitted Fabrics, Realistic & Physically Based Modeling of Knitted Patterns,” Computer Graphics Forum, vol. 17, no. 3, pp. 355-362, 1998.
[21] A. Meyer and F. Neyret, “Interactive Volumetric Textures,” Proc. Eurographics Rendering Workshop 1998, pp. 157-168, June 1998.
[22] F. Neyret, “Modeling, Animating, and Rendering Complex Scenes Using Volumetric Textures,” IEEE Trans. Visualization and Computer Graphics, vol. 4, no. 1, pp. 55-70, Jan.-Mar. 1998.
[23] W.T. Reeves, D.H. Salesin, and R.L. Cook, “Rendering Antialiased Shadows with Depth Maps,” Computer Graphics (Proc. SIGGRAPH '87), vol. 21, no. 4, pp. 283-291, July 1987.
[24] B. Robertson, “Building a Better Mouse,” Computer Graphics World, vol. 22, no. 12, Dec. 1999.
[25] C. Soler and F.X. Sillion, “Fast Calculation of Soft Shadow Textures Using Convolution,” Proc. SIGGRAPH '98, pp. 321-332, July 1998.
[26] W. Straßer and B. Eberhardt, “Representation of Knit Fabrics,” SIGGRAPH Course Notes: Cloth and Clothing in Computer Graphics, pp. F-1-18, 1998.
[27] D. Terzopoulos and K. Fleischer, “Deformable Models,” The Visual Computer, vol. 4, no. 6, pp. 306-331, Dec. 1988.
[28] N.M. Thalmann, S. Carion, M. Courchesne, P. Volino, and Y. Wu, “Virtual Clothes, Hair and Skin for Beautiful Top Models,” Computer Graphics Int'l, 1996.
[29] P. Volino and N.M. Thalmann, “Implementing Fast Cloth Simulation with Collision Response,” Computer Graphics Int'l, 2000.
[30] L.R. Wanger, J.A. Ferwerda, and D.P. Greenberg, “Perceiving Spatial Relationships in Computer-Generated Images,” IEEE Computer Graphics and Applications, vol. 12, no. 3, pp. 44-58, May 1992.
[31] S.H. Watson, J.R. Arvo, and K.E. Torrance, “Predicting Reflectance Functions from Complex Surfaces,” Computer Graphics (Proc. SIGGRAPH '92), vol. 26, no. 2, pp. 255-264, July 1992.
[32] J. Weil, “The Synthesis of Cloth Objects,” Computer Graphics (Proc. SIGGRAPH '86), vol. 20, no. 4, pp. 49-54, Aug. 1986.
[33] S.H. Westin, J.R. Arvo, and K.E. Torrance, “Predicting Reflectance Functions from Complex Surfaces,” Computer Graphics (Proc. SIGGRAPH '92), vol. 26, no. 2, pp. 255-264, July 1992.
[34] L. Williams, “Casting Curved Shadows on Curved Surfaces,” Computer Graphics (Proc. SIGGRAPH '78), vol. 21, no. 3, pp. 270-274, Aug. 1978.
[35] Y.Q. Xu, Y. Chen, S. Lin, H. Zhong, E. Wu, B. Guo, and H.Y. Shum, “Photo-Realistic Rendering of Knitwear Using the Lumislice,” Proc. SIGGRAPH 2001, pp. 391-398, Aug. 2001.
[36] T. Yasuda, S. Yokoi, and J. Toriwaki, “A Shading Model for Cloth Objects,” IEEE Computer Graphics and Applications, vol. 12, no. 6, pp. 15-24, Nov. 1992.
[37] H. Zhong, Y. Xu, B. Guo, and H. Shum, “Realistic and Efficient Rendering of Free-Form Knitwear,” J. Visualization and Computer Animation, Special Issue on Cloth Simulation, vol. 12, no. 1, 2001.

Index Terms:
Knitwear, image-based rendering, photorealistic rendering, animation models, parametric surfaces, transparency blending.
Citation:
Yanyun Chen, Stephen Lin, Hua Zhong, Ying-Qing Xu, Baining Guo, Heung-Yeung Shum, "Realistic Rendering and Animation of Knitwear," IEEE Transactions on Visualization and Computer Graphics, vol. 9, no. 1, pp. 43-55, Jan.-March 2003, doi:10.1109/TVCG.2003.1175096
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