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Issue No.04 - July/August (2011 vol.31)
pp: 78-88
Xiaolin K. Wei , Texas A&M University
Jinxiang Chai , Texas A&M University
ABSTRACT
The authors present a data-driven algorithm for interactive 3D human-character posing. They formulate the problem in a maximum a posteriori (MAP) framework by combining the user's inputs with the priors embedded in prerecorded human poses. Maximizing the posterior probability lets them generate a most-likely human pose that satisfies the user constraints. The system can learn priors from a huge, heterogeneous human-motion-capture database (2.8 million prerecorded poses) and use them to generate a wide range of natural poses. No previous data-driven character-posing system has demonstrated this capability. In addition, the authors present two intuitive interfaces for interactive human-character posing: direct-manipulation interfaces and sketching interfaces. They show their system's superiority compared to standard inverse-kinematics techniques and alternative data-driven techniques.
INDEX TERMS
computer graphics, data-driven character posing, inverse kinematics, motion-capture database, nonlinear optimization, statistical models, interactive techniques, graphics and multimedia
CITATION
Xiaolin K. Wei, Jinxiang Chai, "Intuitive Interactive Human-Character Posing with Millions of Example Poses", IEEE Computer Graphics and Applications, vol.31, no. 4, pp. 78-88, July/August 2011, doi:10.1109/MCG.2009.132
REFERENCES
1. C. Rose, P.-P. Sloan, and M. Cohen, "Artist-Directed Inverse-Kinematics Using Radial Basis Function Interpolation," Computer Graphics Forum, vol. 20, no. 3, 2001, pp. 239–250.
2. K. Grochow et al., "Style-Based Inverse Kinematics," ACM Trans. Graphics, vol. 23, no. 3, 2004, pp. 522–531.
3. Z. Ghahramani and G.E. Hinton, The EM Algorithm for Mixtures of Factor Analyzers, tech. report CRG-TR-96-1, Univ. of Toronto, 1997.
4. M. Lau et al., "Face Poser: Interactive Facial Modeling Using Model Priors," Proc. 2007 ACM Siggraph/Eurographics Symp. Computer Animation (SCA 07), Eurographics Assoc., 2007, pp. 161–170.
5. M.I.A. Lourakis, "levmar: Levenberg-Marquardt Nonlinear Least Squares Algorithms in C/C++," 2009; www.ics.forth.gr/~lourakislevmar.
6. J. Chai and J. Hodgins, "Performance Animation from Low-Dimensional Control Signals," ACM Trans. Graphics, vol. 24, no. 3, 2005, pp. 686–696.
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