“Motion warping” by Witkin and Popovic
Conference:
Type(s):
Title:
- Motion warping
Presenter(s)/Author(s):
Abstract:
We describe a simple technique for editing captured or keyframed animation based on warping of the motion parameter curves. The animator interactively defines a set of keyframe-like constraints which are used to derive a smooth deformation that preserves the fine structure of the original motion. Motion clips are combined by overlapping and blending of the parameter curves. We show that whole families of realistic motions can be derived from a single captured motion sequence using only a few keyframes to specify the motion warp. Our technique makes it feasible to create libraries of reusable “clip motion.”
References:
1. T. Beier and S. Neely. Feature-based image metamorphosis. In Edwin E. Catmull, editor, Computer Graphics (SIGGRAPH ’92 Proceedings), volume 26, pages 35-42, July 1992.
2. R. Boulic, Zhiyong Huang, N.M. Thalmann, and D. Thaimann. Goal-oriented design and correction of articulated figure motion with the track system. Computers and Graphics (UK), 18:443-52, July-Aug. 1994.
3. A. Finkelstein and D. H. Salesin. Multiresolution curves. In Computer Graphics (SIGGRAPH ’94 Proceedings), volume 28, pages 261-268, July 1994.
4. S. Guo, J. Roberg6, and T. Grace. Controlling movement using parametric frame space interpolation. In Proceedings of Computer Animation ‘ 93, pages 216-227, 1993.
5. H. Ko and N. I. Badler. Straight line walking animation based on kinematic generalization that preserves the original characteristics. In Proceedings Graphics Interface ’93, pages 9-16, May 1993.
6. E Litwinowicz and L. Williams. Animating images with drawings. In Computer Graphics (SIGGRAPH ’94 Proceedings), pages 409-12, July 1994.
7. K. Perlin. Real time responsive animation with personality. IEEE Transactions on Visualization and Computer Graphics, 1(1), March 1995.
8. I. J. Schoenberg. Cardinal spline interpolation. CBMS (Conf. Board of the Mathematical Sciences), 12, 1973.
9. M. Unuma and R. Takeuchi. Generation of human walking motion with emotion for computer animation. Trans. Inst. Electron. Inf. Commun. Eng. D-H (Japan), J76D-II:1822-31, Aug. 1993.
10. A. Witkin and M. Kass. Spacetime constraints. In Computer Graphics (SIGGRAPH ’88 Proceedings), volume 22, pages 159-168, August 1988.
