Research Article

An LMA-Effort simulator with dynamics parameters for motion capture animation

  1. Shih-Pin Chao,
  2. Shi-Nine Yang*,
  3. Tsang-Gang Lin

Article first published online: 14 JUN 2006

DOI: 10.1002/cav.120

Issue

Computer Animation and Virtual Worlds

Computer Animation and Virtual Worlds

Special Issue: CASA 2006

Volume 17, Issue 3-4, pages 167–177, July 2006

Additional Information

How to Cite

Chao, S.-P., Yang, S.-N. and Lin, T.-G. (2006), An LMA-Effort simulator with dynamics parameters for motion capture animation. Comp. Anim. Virtual Worlds, 17: 167–177. doi: 10.1002/cav.120

Author Information

*Department of Computer Science, National Tsing Hua University, Hsinchu, Taiwan, 300.

Publication History

  1. Issue published online: 14 JUN 2006
  2. Article first published online: 14 JUN 2006
  3. Manuscript Accepted: 10 MAY 2006
  4. Manuscript Revised: 2 MAY 2006
  5. Manuscript Received: 10 APR 2006

Funded by

  • National Science Council of Taiwan

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Keywords:

  • animation techniques;
  • dynamics-based animation;
  • motion capture and human body simulation;
  • motion control;
  • procedural modeling

Abstract

This paper presents a dynamics-based Effort simulator so that a given motion can be modified according to specified Effort qualities. The basic idea of our approach is to establish relations between Effort factors such as Space, Weight, Time, and Flow, and their corresponding dynamics parameters such as force, stiffness, inertia, damping, gravity, and etc in the simulator. Then, a motion with specified Effort quality can be realized by mapping it to appropriate dynamics parameters of the simulator. The proposed simulator has two merits: it is motion capture-driven, therefore it is able to synthesize motion details and easily to be incorporated into popular motion capture applications. Besides, it is dynamics based and therefore it provides high-level control intuition of motion dynamics in specifying Effort qualities. To demonstrate the effectiveness of the proposed simulator, several experimental examples are presented and their results are discussed. Copyright © 2006 John Wiley & Sons, Ltd.

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