Accurate Synchronization of Gesture and Speech for Conversational Agents using Motion Graphs

Jianfeng Xu, Yuki Nagai, Shinya Takayama, Shigeyuki Sakazawa

2014

Abstract

Multimodal representation of conversational agents requires accurate synchronization of gesture and speech. For this purpose, we investigate the important issues in synchronization as a practical guideline for our algorithm design through a precedent case study and propose a two-step synchronization approach. Our case study reveals that two issues (i.e. duration and timing) play an important role in the manual synchronizing of gesture with speech. Considering the synchronization problem as a motion synthesis problem instead of a behavior scheduling problem used in the conventional methods, we use a motion graph technique with constraints on gesture structure for coarse synchronization in a first step and refine this further by shifting and scaling the motion in a second step. This approach can successfully synchronize gesture and speech with respect to both duration and timing. We have confirmed that our system makes the creation of attractive content easier than manual creation of equal quality. In addition, subjective evaluation has demonstrated that the proposed approach achieves more accurate synchronization and higher motion quality than the state-of-the-art method.

Paper Citation

in Harvard Style

Xu J., Nagai Y., Takayama S. and Sakazawa S. (2014). Accurate Synchronization of Gesture and Speech for Conversational Agents using Motion Graphs . In Proceedings of the 6th International Conference on Agents and Artificial Intelligence - Volume 2: ICAART, ISBN 978-989-758-016-1, pages 5-14. DOI: 10.5220/0004748400050014

in Bibtex Style

@conference{icaart14,
author={Jianfeng Xu and Yuki Nagai and Shinya Takayama and Shigeyuki Sakazawa},
title={Accurate Synchronization of Gesture and Speech for Conversational Agents using Motion Graphs},
booktitle={Proceedings of the 6th International Conference on Agents and Artificial Intelligence - Volume 2: ICAART,},
year={2014},
pages={5-14},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0004748400050014},
isbn={978-989-758-016-1},
}

in EndNote Style

TY - CONF
JO - Proceedings of the 6th International Conference on Agents and Artificial Intelligence - Volume 2: ICAART,
TI - Accurate Synchronization of Gesture and Speech for Conversational Agents using Motion Graphs
SN - 978-989-758-016-1
AU - Xu J.
AU - Nagai Y.
AU - Takayama S.
AU - Sakazawa S.
PY - 2014
SP - 5
EP - 14
DO - 10.5220/0004748400050014