Adding Cartoon-like Motion to Realistic Animations

Rufino R. Ansara, Chris Joslin

2017

Abstract

In comparison to traditional animation techniques, motion capture allows animators to obtain a large amount of realistic data in little time. In contrast, classical animation requires a significant amount of manual labour. The motivation behind our research is to look at methods that can fill the gap that separates realistic motion from cartoon animation. With this knowledge, classical animators could produce animated movies and nonrealistic video games in a shorter amount of time. To add cartoon-like qualities to realistic animations, we suggest an algorithm that changes the animation curves of motion capture data by modifying their local minima and maxima. We also propose a curve-based interface that allows users to quickly edit and visualize the changes applied to the animation. Through our user studies, we determine that the proposed curve interface is a good method of interaction. However, we find that in certain cases (both user-related and algorithmic), our animation results exhibit unwanted artefacts. Thus, we present various ways to reduce, avoid or eliminate these issues.

References

  1. Arikan, O., Forsyth, D. A., and O'Brien, J. F. 2003, July. Motion synthesis from annotations. In ACM Transactions on Graphics (TOG) (Vol. 22, No. 3, pp. 402-408). ACM.
  2. Brand, M., and Hertzmann, A. 2000, July. Style machines. In Proceedings of SIGGRAPH, (pp. 183-192). ACM
  3. Bruderlin, A., and Williams, L. 1995, September. Motion signal processing. In Proceedings of SIGGRAPH (pp. 97-104). ACM.
  4. Etemad, S. A., and Arya, A. 2014. Classification and translation of style and affect in human motion using RBF neural networks. Neurocomputing, 129, 585-595.
  5. Goodwin, N. C. 1987. Functionality and usability. Communications of the ACM, 30(3), 229-233.
  6. Grochow, K., Martin, S. L., Hertzmann, A., and Popovic, Z. 2004, August. Style-based inverse kinematics. In ACM transactions on graphics (TOG) (Vol. 23, No. 3, pp. 522-531). ACM.
  7. Heck, R., and Gleicher, M. 2007, April. Parametric motion graphs. In Proceedings of the 2007 symposium on Interactive 3D graphics and games (pp. 129-136). ACM.
  8. Jenkins, O. C., and Mataric, M. J. 2004. Performancederived behavior vocabularies: Data-driven acquisition of skills from motion. International Journal of Humanoid Robotics, 1(02), 237-288.
  9. Kim, J. H., Choi, J. J., Shin, H. J., and Lee, I. K. 2006. Anticipation effect generation for character animation. In Advances in Computer Graphics (pp. 639-646). Springer Berlin Heidelberg.
  10. Kovar, L., Schreiner, J., and Gleicher, M. 2002, July. Footskate cleanup for motion capture editing. In Proceedings of the 2002 ACM SIGGRAPH/Eurographics symposium on Computer animation (pp. 97-104). ACM.
  11. Kuznetsova, A., Troje, N. F., and Rosenhahn, B. 2013. A Statistical Model for Coupled Human Shape and Motion Synthesis. In GRAPP/IVAPP (pp. 227-236).
  12. Kwon, J. Y., and Lee, I. K. 2008, September. Exaggerating Character Motions Using Sub Joint Hierarchy. In Computer Graphics Forum (Vol. 27, No. 6, pp. 1677-1686). Blackwell Publishing Ltd.
  13. Kwon, T., Cho, Y. S., Park, S. I., and Shin, S. Y. 2008. Two-character motion analysis and synthesis. IEEE Transactions on Visualization and Computer Graphics, 14(3), 707-720.
  14. Li, Y., Gleicher, M., Xu, Y. Q., and Shum, H. Y. 2003, July. Stylizing motion with drawings. In Proceedings of the 2003 ACM SIGGRAPH/Eurographics symposium on Computer animation (pp. 309-319). Eurographics Association.
  15. Liu, C. K., and Popovic, Z. 2002. Synthesis of complex dynamic character motion from simple animations. ACM Transactions on Graphics (TOG), 21(3), 408- 416.
  16. Min, J., Liu, H., and Chai, J. 2010, February. Synthesis and editing of personalized stylistic human motion. In Proceedings of the 2010 ACM SIGGRAPH symposium on Interactive 3D Graphics and Games (pp. 39-46). ACM.
  17. Popovic, Z., and Witkin, A. 1999, July. Physically based motion transformation. In Proceedings of the 26th annual conference on Computer graphics and interactive techniques (pp. 11-20). ACM.
  18. Reitsma, P. S., and Pollard, N. S. 2003. Perceptual metrics for character animation: sensitivity to errors in ballistic motion. ACM Transactions on Graphics (TOG), 22(3), 537-542.
  19. Rose, C., Guenter, B., Bodenheimer, B., and Cohen, M. F. 1996, August. Efficient generation of motion transitions using spacetime constraints. In Proceedings of the 23rd annual conference on Computer graphics and interactive techniques (pp. 147-154). ACM.
  20. Savoye, Y. 2011, December. Stretchable cartoon editing for skeletal captured animations. In SIGGRAPH Asia 2011 Sketches (p. 5). ACM.
  21. Thomas, F., and Johnston, O. 1995. The illusion of life: Disney animation (pp. 306-312). New York: Hyperion.
  22. Wang, J., Drucker, S. M., Agrawala, M., and Cohen, M. F. 2006, July. The cartoon animation filter. In ACM Transactions on Graphics (TOG) (Vol. 25, No. 3, pp. 1169-1173). ACM.
  23. White, D., Loken, K., and van de Panne, M. 2006, July. Slow in and slow out cartoon animation filter. In ACM SIGGRAPH 2006 Research posters (p. 3). ACM.
  24. Witkin, A., and Kass, M. 1988. Spacetime constraints. ACM Siggraph Computer Graphics, 22(4), 159-168.
  25. Witkin, A., and Popovic, Z. 1995, September. Motion warping. In Proceedings of the 22nd annual conference on Computer graphics and interactive techniques (pp. 105-108). ACM.
  26. Yamane, K., Kuffner, J. J., and Hodgins, J. K. 2004, August. Synthesizing animations of human manipulation tasks. In ACM Transactions on Graphics (TOG) (Vol. 23, No. 3, pp. 532-539). ACM.
Download


Paper Citation


in Harvard Style

Ansara R. and Joslin C. (2017). Adding Cartoon-like Motion to Realistic Animations . In Proceedings of the 12th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications - Volume 1: GRAPP, (VISIGRAPP 2017) ISBN 978-989-758-224-0, pages 137-147. DOI: 10.5220/0006174001370147


in Bibtex Style

@conference{grapp17,
author={Rufino R. Ansara and Chris Joslin},
title={Adding Cartoon-like Motion to Realistic Animations},
booktitle={Proceedings of the 12th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications - Volume 1: GRAPP, (VISIGRAPP 2017)},
year={2017},
pages={137-147},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0006174001370147},
isbn={978-989-758-224-0},
}


in EndNote Style

TY - CONF
JO - Proceedings of the 12th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications - Volume 1: GRAPP, (VISIGRAPP 2017)
TI - Adding Cartoon-like Motion to Realistic Animations
SN - 978-989-758-224-0
AU - Ansara R.
AU - Joslin C.
PY - 2017
SP - 137
EP - 147
DO - 10.5220/0006174001370147