Journal of KIISE:Computing Practices and Letters (한국정보과학회논문지:컴퓨팅의 실제 및 레터)

Korean Institute of Information Scientists and Engineers (한국정보과학회)
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Motion Retargetting Simplification for H-Anim Characters

H-Anim 캐릭터의 모션 리타겟팅 단순화

  • 정철희 (수원대학교 인터넷정보공학과) ;
  • 이명원 (수원대학교 인터넷정보공학과)
  • Published : 2009.10.15
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Abstract

There is a need for a system independent human data format that doesn't depend on a specific graphics tool or program to use interoperable human data in a network environment. To achieve this, the Web3D Consortium and ISO/IEC JTC1 WG6 developed the international draft standard ISO/IEC 19774 Humanoid Animation(H-Anim). H-Anim defines the data structure for an articulated human figure, but it does not yet define the data for human motion generation. This paper discusses a method of obtaining compatibility and independence of motion data between application programs, and describes a method of simplifying motion retargetting necessary for motion definition of H-Anim characters. In addition, it describes a method of generating H-Anim character animation using arbitrary 3D character models and arbitrary motion capture data without any inter-relations, and its implementation results.

네트워크 환경에서 인체형 캐릭터의 모델링과 애니메이션 데이터의 호환성을 위해서는 특정 그래픽스 도구나 프로그램에 의존하지 않는 시스템 독립적인 인체 데이터 형식이 필요하다. 이를 위한 목적으로 Web3D 컨소시엄과 ISO/IEC SC24 WG6가 공동으로 제정한 국제표준 ISO/IEC 19774 H-Anim은 관절이 있는 인체형 데이터 구조를 정의하며 모션 생성에 필요한 계층 구조를 정의하고 있으나 모션 생성 방법을 위한 데이터에 대해서는 정의하고 있지 않다. 본 논문은 응용 프로그램간의 모션 데이터의 호환성과 독립성을 목적으로 하며, H-Anim 캐릭터의 모션 데이터 규격 정의 및 활용을 위한 모션 리타겟팅 구현의 단순화 방법을 기술한다. 그리고, 일반 그래픽스 도구에 의해 제작한 임의의 3차원 캐릭터와, 이 모델과는 관련이 없이 생성된 임의의 모션 캡처 데이터를 이용하여 H-Anim 구조의 캐릭터 애니메이션을 생성하는 방법과 실험 결과를 설명한다.

Keywords

References

  1. ISO/IEC FDIS 19774 - Humanoid animation (H-Anim), Web3D Consortium, 2006
  2. R. Parent, Computer Animation: Algorithms and Techniques, 2nd Ed., Morgan Kaufmann, 2007
  3. M. Gleicher, "Retargetting motion to new charac-ters," Proceedings of the 25th annual conference on Computer graphics and interactive techniques (SIGGRAPH '98), pp.266-276, July 1998. https://doi.org/10.1145/280814.280820
  4. K. Choi and H. Ko, "On-line Motion Retargetting," Seventh Pacific Conference on Computer Graphics and Applications (PG'99), pp.32-42, October 1999
  5. S. Tak and H. Ko, "A physically-based motion retargeting filter," ACM Transactions on Graphics (TOG), pp.841-848, January 2005 https://doi.org/10.1145/1037957.1037963
  6. I. Baran and J. Popovic, “Automatic rigging and animation of 3D characters,” ACM Transactions on Graphics, Vol.26, no.3, Article 72, July 2007 https://doi.org/10.1145/1276377.1276467
  7. J. K. Hodgins and N. S. Pollard, “Adapting Simulated Behaviors For New Characters,” Proceedings of the 24th annual conference on Com-puter graphics and interactive techniques (SIG-GRAPH '97), pp.153-162, 1997 https://doi.org/10.1145/258734.258822
  8. G. Wen, Z. Wang, S. Xia and D. Zhu, "From motion capture data to character animation," VRST '06: Proceedings of the ACM symposium on Vir-tual reality software and technology, pp.165-168 November 2006 https://doi.org/10.1145/1180495.1180528
  9. A. Savenko and G. Clapworthy, “Using Motion Analysis Techniques for Motion Retargetting,” Proceedings of the Sixth International Conference on Information Visualization (IV'02), pp.110-115, 2002 https://doi.org/10.1109/IV.2002.1028764
  10. H. Chung and Y. Lee, "MCML: motion capture markup language for integration of heterogeneous motion capture data," Computer Standards & Interfaces, vol.26, issue2, pp.113-130, March 2004 https://doi.org/10.1016/S0920-5489(03)00071-0
  11. Y. Tsai. H. Chu, K. B. Cheng, T. Lee and C. Yen, “Animation Generation and Retargeting Based on Physics Characteristics,” Third international Conference on International Information Hiding and Multimedia Signal Processing (IIH-MSP 2007), pp.349-352, November 2007
  12. K. Yamane and Y. Nakamura, “Natural Motion Animation through Constraining and Deconstrai-ning at Will,” IEEE Transactions on Visualization and Computer Graphics, vol.9, no.3, pp.352-360, July 2003 https://doi.org/10.1109/TVCG.2003.1207443