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From linear to interactive animation: how autonomous characters change the process and product of animating

Published:01 January 2005Publication History
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Abstract

There are significant differences between the art of animating for linear media such as film and video and the art of animating for interactive media such as computer and video games. In particular, these differences arise from the shift from linear characters to autonomous interactive characters. This article describes differences between linear animation and interactive animation in several areas of character design -- character intelligence, emotional expressiveness, navigation, transitions among animations, and multi-character interaction. These differences provide insight into the processes of both forms of animation and the final products that they create, and may provide a starting point for linear animators interested in becoming familiar with interactive animation.

References

  1. Amaya, K. and Bruderlin, A. 1996. Emotion from motion. In Proceedings of the Conference on Graphics Interface '96 (Toronto, Canada, 1996). Google ScholarGoogle ScholarDigital LibraryDigital Library
  2. Anderson, C. A. and Bushman, B. J. 2001. Effects of violent video games on aggressive behavior, aggressive cognition, aggressive affect, physiological arousal, and prosocial behavior: A meta-analytic review of the scientific literature. Psychological Science 12 (2001), 353-359.Google ScholarGoogle ScholarCross RefCross Ref
  3. Assanie, M. 2002. Directable synthetic characters. In Proceedings of the 2002 AAAI Spring Symposium on Artificial Intelligence and Interactive Entertainment.Google ScholarGoogle Scholar
  4. Ball, G., Ling, D., Kurlander, D., Miller, J., Pugh, D., Skelly, T., Stankosky, A., Thiel, D., Dantzich, M. V., and Wax, T. 1997. Lifelike computer characters: The project at Microsoft Research. In Software Agents. J. M. Bradshaw, ed. AAAI Press/The MIT Press, Cambridge, MA, 1997, 191-222. Google ScholarGoogle ScholarDigital LibraryDigital Library
  5. Bares, W. H. and Lester, J. C. 1997. Realtime generation of customized 3D animated explanations for knowledge-based learning environments. In Proceedings of the 14th AAAI National Conference on Artificial Intelligence. Google ScholarGoogle ScholarDigital LibraryDigital Library
  6. Bates, J., Loyall, A., and Reilly, W. 1992. An architecture for action, emotion, and aocial behavior. In Selected Papers from the Fourth European Workshop on Modeling Autonomous Agents in a Multi-Agent World, LINCS 830. Springer, New York,1992, 55-68. Google ScholarGoogle ScholarDigital LibraryDigital Library
  7. Bendazzi, G. 1995. Cartoons: One Hundred Years of Cinema Animation: Indiana University Press, 1995.Google ScholarGoogle Scholar
  8. Blumberg, B. 1998. Swamped! Using plush toys to direct autonomous animated characters. In Proceedings of the SIGGRAPH 98 Conference: Abstracts and Applications. Google ScholarGoogle ScholarDigital LibraryDigital Library
  9. Blumberg, B. 1999. (void*): A cast of characters. In Proceedings of the SIGGRAPH 99 Conference: Abstracts and Applications. Google ScholarGoogle ScholarDigital LibraryDigital Library
  10. Blumberg, B., Downie, M., Ivanov, Y., Berlin, M., Johnson, M. P., and Tomlinson, B. 2002. Integrated learning for interactive synthetic characters. In Proceedings of the 29th Annual Conference on Computer Graphics and Interactive Techniques (San Antonio, TX, 2002). Google ScholarGoogle ScholarDigital LibraryDigital Library
  11. Breazeal, C. 2000. Sociable machines: Expressive social exchange between robot and human. Sc.D. dissertation, Artificial Intelligence Laboratory. MIT, Cambridge, MA, 2000. Google ScholarGoogle ScholarDigital LibraryDigital Library
  12. Brogan, D. C. and Hodgins, J. K. 2002. Simulation level of detail for multiagent control. In Proceedings of the First International Joint Conference on Autonomous Agents and Multiagent Systems (2002). Google ScholarGoogle ScholarDigital LibraryDigital Library
  13. Cassell, J., Bickmore, T., Billinghurst, M., Campbell, L., Chang, K., Vilhjalmsson, H., and Yan, H. 1999. Embodiment in conversational interfaces: Rea. In Proceedings of the CHI'99 Conference on Human Factors in Computing Systems (Pittsburgh, PA, 1999). Google ScholarGoogle ScholarDigital LibraryDigital Library
  14. Damasio, A. 1994. Descartes' Error: Emotion, Reason, and the Human Brain., G. P. Putnam's Sons, New York, 1994.Google ScholarGoogle Scholar
  15. Demaria, R. and Wilson, J. L. 2003. High Score!: The Illustrated History of Electronic Games, 2nd ed. McGraw-Hill Osborne Media, Emeryville, CA, 2003. Google ScholarGoogle ScholarDigital LibraryDigital Library
  16. Downie, M. 2001. Behavior, animation, music: The music and movement of synthetic characters. S.M. thesis, Media Arts and Sciences. MIT, Cambridge, MA, 2001.Google ScholarGoogle Scholar
  17. Drucker, S. M. 1994. Intelligent camera control for graphical environments. Ph.D dissertation, Media Arts and Sciences, MIT, Cambridge, MA, 1994. Google ScholarGoogle ScholarDigital LibraryDigital Library
  18. Ekman, P. 1992. An argument for basic emotions. In Basic Emotions, N. Stein and K. Oatley, eds. Lawrence Erlbaum, Hove, UK, 1992, 169-200.Google ScholarGoogle Scholar
  19. El-Nasr, M. S. and Horswill, I. 2004. Automating lighting fesign for interactive entertainment. Comput. Entertain. 2 (2004), 15-15. Google ScholarGoogle ScholarDigital LibraryDigital Library
  20. ESA 2003. Key facts and research on video games and violence. http://www.theesa.com/keyfactsaug2003.htm, vol. 2003. Entertainment Software Association, 2003.Google ScholarGoogle Scholar
  21. Funge, J., Tu, X., and Terzopoulos, D. 1999. Cognitive modeling: knowledge, reasoning and planning for intelligent characters. In Proceedings of the 26th Annual Conference on Computer Graphics and Interactive Techniques (SIGGRAPH 99, Los Angeles, CA). Google ScholarGoogle ScholarDigital LibraryDigital Library
  22. Gaudiosi, J. 2003. Games, movies tie the knot. Wired Online (Dec. 10, 2003).Google ScholarGoogle Scholar
  23. Gratch, J., Rickel, J., Andre, E., Badler, N., Cassell, J., and Petajan, E. 2002. Creating interactive virtual humans: Some assembly required. IEEE Intelligent Systems (July/Aug. 2002), 54-63. Google ScholarGoogle ScholarDigital LibraryDigital Library
  24. Hayes-Roth, B., Sincoff, E., Brownston, L., Huard, R., and Lent, B. 1995. Directed E. improvisation with animated puppets. In Proceedings of the CHI '95 Conference. Google ScholarGoogle ScholarDigital LibraryDigital Library
  25. He, L., Cohen, M. F., and Salesin, D. H. 1996. The virtual cinematographer: A paradigm for automatic realtime camera control and directing. In Proceedings of the SIGGRAPH 96 Conference (Aug. 1996). Google ScholarGoogle ScholarDigital LibraryDigital Library
  26. Hodgins, J. K. and Pollard, N. S. 1997. Adapting simulated behaviors for new characters. In Proceedings of ACM SIGGRAPH 97 Conference. Google ScholarGoogle ScholarDigital LibraryDigital Library
  27. Isla, D., Burke, R., Downie, M., and Blumberg, B. 2001. A layered brain architecture for synthetic creatures. In Proceedings of the International Joint Conferences on Artificial Intelligence (IJCAI, Seattle, WA, 2001). Google ScholarGoogle ScholarDigital LibraryDigital Library
  28. Johnson, M. P., Wilson, A., Blumberg, B., Kline, C., and Bobick, A. 1999. Sympathetic interfaces: Using a plush toy to direct synthetic characters. In Proceedings of the CHI 99 Conference. Google ScholarGoogle ScholarDigital LibraryDigital Library
  29. Kleiser, J. 1996. Digital stunt doubles: Safety through numbers (panel). In Proceedings of the 23rd Annual Conference on Computer Graphics and Interactive Techniques. ACM Press, 1996, 493-494. Google ScholarGoogle ScholarDigital LibraryDigital Library
  30. Kline, C. and Blumberg, B. 1999. The art and science of synthetic character design. In Proceedings of the AISB 1999 Symposium on AI and Creativity in Entertainment and Visual Art (Edinburgh, Scotland).Google ScholarGoogle Scholar
  31. Lasseter, J. 2001. Tricks to animating characters with a computer. SIGGRAPH Computer Graphics 35 (Jan. 2001), 45-47. Google ScholarGoogle ScholarDigital LibraryDigital Library
  32. Laybourne, K. 1998. The Animation Book: A Complete Guide to Animated Filmmaking-From Flip-Books to Sound Cartoons to 3-D Animation. Three Rivers Press, 1998.Google ScholarGoogle Scholar
  33. Liu, C. K. and Popovic, Z. 2002. Synthesis of complex dynamic character motion from simple animations. ACM Trans. Graphics 21 (2002). Google ScholarGoogle ScholarDigital LibraryDigital Library
  34. Marks, R. 2001. Enhanced reality: A new frontier for computer entertainment. In Proceedings of the SIGGRAPH 2001 Conference: Abstracts and Applications: Emerging Technologies.Google ScholarGoogle Scholar
  35. Marsh, T. 2003. Presence as experience: Film informing ways of staying there. Presence: Teleoper. Virtual Environ. 12 (2003), 538-549. Google ScholarGoogle ScholarDigital LibraryDigital Library
  36. Mehrabian, A. and Russell, J. 1974. An Approach to Environmental Psychology. MIT Press, Cambridge, MA, 1974.Google ScholarGoogle Scholar
  37. Murray, J. 1998. Hamlet on the Holodeck: The Future of Narrative in Cyberspace. MIT Press, Cambridge, MA, 1998. Google ScholarGoogle ScholarDigital LibraryDigital Library
  38. Musse, S. R., Babski, C., Capin, T., and Thalmann, D. 1998. Crowd modelling in collaborative virtual environments, In Proceedings of the ACM Symposium on Virtual Reality Software and Technology 1998. ACM Press, New York, 115-123. Google ScholarGoogle ScholarDigital LibraryDigital Library
  39. Ortony, A. 1988. On making believable emotional agents believable. In Emotions in Humans and Artifacts, R. Trappl et al., eds. MIT Press, Cambridge, MA, 1988.Google ScholarGoogle Scholar
  40. Ortony, A., Clore, G. L., and Collins, A. 1988. The Cognitive Structure of Emotions. Cambridge University Press, New York, 1988.Google ScholarGoogle ScholarCross RefCross Ref
  41. Paiva, A., Machado, I., and Prada, R. 2001. Heroes, villians, magicians, ..: Dramatis personae in a virtual story creation environment. In Proceedings of the 6th International Conference on Intelligent User Interfaces (Santa Fe, NM, 2001). Google ScholarGoogle ScholarDigital LibraryDigital Library
  42. Pausch, R., Snoddy, J., Taylor, R., Watson, S., and Haseltine, E. 1996. Disney's Aladdin: First steps toward storytelling in virtual reality. In Proceedings of the 23rd Annual Conference on Computer Graphics and Interactive Techniques. ACM Press, New York, 1996, 193-203. Google ScholarGoogle ScholarDigital LibraryDigital Library
  43. Pearce, C. 2004. Towards a game theory of game. In First Person: New Media as Story, Performance and Game. N. Wardrip-Fruin and P. Harrigan, eds. MIT Press, Cambridge, MA, 2004.Google ScholarGoogle Scholar
  44. Perlin, P, K. and Goldberg, A. 1996. Improv: A system scripting interactive actors in virtual worlds. In Proceedings of the ACM SIGGRAPH 96 Conference (New Orleans, LA, 1996). Google ScholarGoogle ScholarDigital LibraryDigital Library
  45. Picard, R. 1997. Affective Computing. MIT Press, Cambridge, MA, 1997. Google ScholarGoogle ScholarDigital LibraryDigital Library
  46. Reilly, W. S. N. 1996. Believable social and emotional agents. Ph.D dissertation, School of Computer Science, Carnegie Mellon Univ., Pittsburgh, PA, 1996.Google ScholarGoogle Scholar
  47. Reynolds, C. W. 1999. Steering behaviors for autonomous characters. In Proceedings of the Game Developers Conference (San Jose, CA, 1999).Google ScholarGoogle Scholar
  48. Rose, C. 1999. Verbs and adverbs: Multidimensional motion interpolation using radial basis functions. Ph.D. Dissertation, Dept. of Computer Science, Princeton Univ., Princeton, NJ, 1999. Google ScholarGoogle ScholarDigital LibraryDigital Library
  49. Schaub, H., Zoll, C., and Aylett, R. 2003. Modelling empathy: The EU-project VICTEC (virtual information and communication technology with empathic characters). In Proceedings of the Fifth International Conference on Cognitive Modeling (Bamberg, Germany, 2003).Google ScholarGoogle Scholar
  50. Siegwart, R. and Nourbakhsh, I. R. 2004. Introduction to Autonomous Mobile Robots. MIT Press, Cambridge, MA, 2004. Google ScholarGoogle ScholarDigital LibraryDigital Library
  51. Steed, P. 2002. Animating Real-Time Game Characters. Charles River Media, Hingham, MA, 2002. Google ScholarGoogle ScholarDigital LibraryDigital Library
  52. Thalmann, D., Noser, H., and Huang, Z. 1997. Autonomous virtual actors based on virtual sensors. In Lecture Notes In Computer Science, Vol. 1195: Creating Personalities for Synthetic Actors, Springer-Verlag, London, UK, 1997. Google ScholarGoogle ScholarDigital LibraryDigital Library
  53. Thomas, F. and Johnson, O. 1981. Disney Animation: The Illusion of Life. Abbeville Press, New York, New York, 1981.Google ScholarGoogle Scholar
  54. Tomlinson, B., Blumberg, B., and Nain, D. 2000. Expressive autonomous cinematography for interactive virtual environments. In Proceedings of the 4th International Conference on Autonomous Agents (Barcelona, Spain, 2000). Google ScholarGoogle ScholarDigital LibraryDigital Library
  55. Tomlinson, B., Downie, M., Berlin, M., Gray, J., Lyons, D., Cochran, J., and Blumberg, B. 2002. Leashing the AlphaWolves: Mixing user direction with autonomous emotion in a pack of semi-autonomous virtual characters. In Proceedings of the 2002 ACM SIGGRAPH Symposium on Computer Animation (San Antonio, TX, 2002). Google ScholarGoogle ScholarDigital LibraryDigital Library
  56. Tomlinson, B., Downie, M., Berlin, M., Gray, J., Wong, A., Burke, R., Isla, D., Ivanov, Y., Johnson, M. P., Lyons, D., Cochran, J., Yong, B., Stiehl, D., Soetjipto, R., Zaharopol, D., and Blumberg, B. 2001. AlphaWolf. In Proceedings of the SIGGRAPH 2001 Conference Abstracts and Applications. 2001.Google ScholarGoogle Scholar
  57. Tomlinson, W. 1999. Interactivity and emotion through cinematography. Masters thesis, Media Arts and Sciences. MIT, Cambridge, MA, 1999.Google ScholarGoogle Scholar
  58. Unuma, M., Anjyo, K., and Takeuchi, R. 1995. Fourier principles for emotion-based human figure animation. In Proceedings of the 22nd Annual Conference on Computer Graphics and Interactive Techniques. ACM Press, New York, 1995, 91-96. Google ScholarGoogle ScholarDigital LibraryDigital Library
  59. Velasquez, J. 1998. When robots weep: Emotional memories and decision-making. In Proceedings of the Fifteenth National Conference on Artificial Intelligence (Madison, WI, 1998). Google ScholarGoogle ScholarDigital LibraryDigital Library
  60. Yi, M. 2004. Games of life. The News Journal (Jan. 20, 2004). http://www.delawareonline.com/newsjournal/life/2004/01/20gamesoflife.html.Google ScholarGoogle Scholar

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          cover image Computers in Entertainment
          Computers in Entertainment   Volume 3, Issue 1
          Theoretical and Practical Computer Applications in Entertainment
          Jan-March 2005
          93 pages
          EISSN:1544-3574
          DOI:10.1145/1057270
          Issue’s Table of Contents

          Copyright © 2005 ACM

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          Association for Computing Machinery

          New York, NY, United States

          Publication History

          • Published: 1 January 2005

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