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Article

Avatar Markup Language

Published: 30 May 2002 Publication History

Abstract

Synchronization of speech, facial expressions and body gestures is one of the most critical problems in realistic avatar animation in virtual environments. In this paper, we address this problem by proposing a new high-level animation language to describe avatar animation. The Avatar Markup Language (AML), based on XML, encapsulates the Text to Speech, Facial Animation and Body Animation in a unified manner with appropriate synchronization. We use low-level animation parameters, defined by the MPEG-4 standard, to demonstrate the use of the AML. However, the AML itself is independent of any low-level parameters as such. AML can be effectively used by intelligent software agents to control their 3D graphical representations in the virtual environments. With the help of the associated tools, AML also facilitates to create and share 3D avatar animations quickly and easily. We also discuss how the language has been developed and used within the SoNG project framework. The tools developed to use AML in a real-time animation system incorporating intelligent agents and 3D avatars are also discussed subsequently.

References

[1]
K. Perlin, and A. Goldberg, "Improv: A System for Scripting Interactive Characters in Virtual Worlds", Proceedings of SIGGRAPH 96, ACM Press, pp. 205-216.
[2]
J. Cassell, H. Vilhjalmsson, and T. Bickmore, "BEAT: the Behavior Expression Animation Toolkit", Proceedings of SIGGRAPH 01, ACM Press, pp. 477-486.
[3]
Microsoft Virtual Worlds, http://www.vworlds.org/
[4]
Blaxxun Interactive, http://www.blaxxun.com/
[5]
ISO/IEC JTC 1/SC 29/WG11 N2502, Information Technology---Generic Coding of Audio-Visual Objects, Part 2: Visual, October 1998.
[6]
ISO/IEC JTC 1/SC 29/WG11 N2739 subpart 2, MPEG-4 Version 2- BIFS, March 1999.
[7]
S. Kshirsagar, T. Molet, N. Magnenat-Thalmann, "Principal Components of Expressive Speech Animation", Proceedings Computer Graphics International 2001, IEEE Computer Society, July 2001, pp 38-44.
[8]
R. Boulic, P. Becheiraz, L. Emering, and D. Thalmann, "Integration of motion control techniques for virtual human and avatar real-time animation", Proceedings ACM Symposium on Virtual Reality Software and Technology 1997, ACM Press, September 1997, pp. 111-118.
[9]
http://www.vhml.org/
[10]
S. Kshirsagar, M. Escher, G. Sannier, N. Magnenat-Thalmann, "Multimodal Animation System Based on the MPEG-4 Standard", Proceedings Multimedia Modelling 99, Ottawa, Canada, October 1999, World Scientific Publishing, pp. 215-232.
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http://www.h-anim.org/
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D. Tolani, A. Goswami, and N. Badler: "Real-time inverse kinematics techniques for anthropomorphic limbs." Graphical Models 62 (5), Sept. 2000, pp. 353-388.
[13]
Microsoft Speech Technologies, http://www.microsft.com/speech

Cited By

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  • (2011)3D Talking-Head Interface to Voice-Interactive Services on Mobile PhonesInternational Journal of Mobile Human Computer Interaction10.4018/jmhci.20110401043:2(50-64)Online publication date: 1-Apr-2011
  • (2010)Storyboarding and pre-visualization with X3DProceedings of the 15th International Conference on Web 3D Technology10.1145/1836049.1836060(73-82)Online publication date: 24-Jul-2010
  • (2010)Real-Time control of a remote virtual tutor using minimal pen-gesturesProceedings of the 10th international conference on Intelligent Tutoring Systems - Volume Part II10.1007/978-3-642-13437-1_62(334-336)Online publication date: 14-Jun-2010
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Information & Contributors

Information

Published In

cover image ACM Other conferences
EGVE '02: Proceedings of the workshop on Virtual environments 2002
May 2002
201 pages
ISBN:1581135351

Sponsors

  • EUROGRAPHICS: The European Association for Computer Graphics

Publisher

Eurographics Association

Goslar, Germany

Publication History

Published: 30 May 2002

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Author Tags

  1. agent controlled animation
  2. animation language
  3. avatar animation
  4. virtual human animation

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View all
  • (2011)3D Talking-Head Interface to Voice-Interactive Services on Mobile PhonesInternational Journal of Mobile Human Computer Interaction10.4018/jmhci.20110401043:2(50-64)Online publication date: 1-Apr-2011
  • (2010)Storyboarding and pre-visualization with X3DProceedings of the 15th International Conference on Web 3D Technology10.1145/1836049.1836060(73-82)Online publication date: 24-Jul-2010
  • (2010)Real-Time control of a remote virtual tutor using minimal pen-gesturesProceedings of the 10th international conference on Intelligent Tutoring Systems - Volume Part II10.1007/978-3-642-13437-1_62(334-336)Online publication date: 14-Jun-2010
  • (2009)Developing embodied agent-based user interface by using interactive drama markup languageProceedings of the 3rd International Conference on Ubiquitous Information Management and Communication10.1145/1516241.1516333(524-528)Online publication date: 15-Feb-2009
  • (2008)Virtual presenterProceedings of the VIII Brazilian Symposium on Human Factors in Computing Systems10.5555/1497470.1497511(296-299)Online publication date: 21-Oct-2008
  • (2007)Realising voice dialogue management in a collaborative virtual environmentInternational Journal of Computer Applications in Technology10.1504/IJCAT.2007.01405829:1(37-44)Online publication date: 1-Jun-2007
  • (2007)Avatar Augmented Annotation Interface for e-LearningProceedings of the 7th international conference on Computational Science, Part III: ICCS 200710.1007/978-3-540-72588-6_79(477-484)Online publication date: 27-May-2007
  • (2006)H-animatorProceedings of the eleventh international conference on 3D web technology10.1145/1122591.1122606(109-117)Online publication date: 18-Apr-2006
  • (2006)In search for your own virtual individualProceedings of the First international conference on Semantic and Digital Media Technologies10.1007/11930334_3(26-40)Online publication date: 6-Dec-2006
  • (2004)A layered scripting language technique for avatar behavior representation and controlProceedings of the 13th international conference on AI, Simulation, and Planning in High Autonomy Systems10.1007/978-3-540-30583-5_60(565-573)Online publication date: 4-Oct-2004
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