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The Visual Computer

, Volume 17, Issue 3, pp 147–157 | Cite as

An efficient animation of wrinkled cloth with approximate implicit integration

  • Young-Min Kang
  • Jeong-Hyeon Choi
  • Hwan-Gue Cho
  • Do-Hoon Lee
Original article

This paper presents an efficient method for creating the animation of flexible objects. The mass-spring model was used to represent flexible objects. The easiest approach to creating animation with the mass-spring model is the explicit Euler method, but the method has a serious weakness in that it suffers from an instability problem. The implicit integration method is a possible solution, but a critical flaw of the implicit method is that it involves a large linear system. This paper presents an approximate implicit method for the mass-spring model. The proposed technique updates with stability the state of n mass points in O(n) time when the number of total springs is O(n). In order to increase the efficiency of simulation or reduce the numerical errors of the proposed approximate implicit method, the number of mass points must be as small as possible. However, coarse discretization with a small number of mass points generates an unrealistic appearance for a cloth model. By introducing a wrinkled cubic spline curve, we propose a new technique that generates realistic details of the cloth model, even though a small number of mass points are used for simulation.

Key words: Cloth animation – Mass spring model – Implicit method – Realistic detail – Wrinkled curve 

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Copyright information

© Springer-Verlag 2001

Authors and Affiliations

  • Young-Min Kang
    • 1
  • Jeong-Hyeon Choi
    • 1
  • Hwan-Gue Cho
    • 1
  • Do-Hoon Lee
    • 2
  1. 1.Department of Computer Science, Pusan National University, Kumjeong-gu, Pusan, 609–735, South Korea e-mail: {ymkang, jhchoi, hgcho}@pearl.cs.pusan.ac.krKR
  2. 2.Department of Computer Engineering, Miryang National University, Miryang, Kyeungnam, 627-702, South Korea e-mail: dhlee@arang.miryang.ac.krFR

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