Proceedings ArticleDOI
Interactive control of avatars animated with human motion data
Jehee Lee,Jinxiang Chai,Paul S. A. Reitsma,Jessica K. Hodgins,Nancy S. Pollard +4 more
- Vol. 21, Iss: 3, pp 491-500
TLDR
This paper shows that a motion database can be preprocessed for flexibility in behavior and efficient search and exploited for real-time avatar control and demonstrates the flexibility of the approach through four different applications.Abstract:
Real-time control of three-dimensional avatars is an important problem in the context of computer games and virtual environments. Avatar animation and control is difficult, however, because a large repertoire of avatar behaviors must be made available, and the user must be able to select from this set of behaviors, possibly with a low-dimensional input device. One appealing approach to obtaining a rich set of avatar behaviors is to collect an extended, unlabeled sequence of motion data appropriate to the application. In this paper, we show that such a motion database can be preprocessed for flexibility in behavior and efficient search and exploited for real-time avatar control. Flexibility is created by identifying plausible transitions between motion segments, and efficient search through the resulting graph structure is obtained through clustering. Three interface techniques are demonstrated for controlling avatar motion using this data structure: the user selects from a set of available choices, sketches a path through an environment, or acts out a desired motion in front of a video camera. We demonstrate the flexibility of the approach through four different applications and compare the avatar motion to directly recorded human motion.read more
Citations
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Book
Computer Vision: Algorithms and Applications
TL;DR: Computer Vision: Algorithms and Applications explores the variety of techniques commonly used to analyze and interpret images and takes a scientific approach to basic vision problems, formulating physical models of the imaging process before inverting them to produce descriptions of a scene.
Journal ArticleDOI
A survey of advances in vision-based human motion capture and analysis
TL;DR: This survey reviews recent trends in video-based human capture and analysis, as well as discussing open problems for future research to achieve automatic visual analysis of human movement.
Journal ArticleDOI
Synthesis and evaluation of linear motion transitions
Jing Wang,Bobby Bodenheimer +1 more
TL;DR: This article develops methods for determining visually appealing motion transitions using linear blending, and assess the importance of these techniques by determining the minimum sensitivity of viewers to transition durations, the just noticeable difference, for both center-aligned and start-end specifications.
Journal ArticleDOI
Generalizing motion edits with Gaussian processes
TL;DR: This work shows that it can make motion editing more efficient by generalizing the edits an animator makes on short sequences of motion to other sequences, and predicts frames for the motion using Gaussian process models of kinematics and dynamics.
Proceedings ArticleDOI
Motion graphs
TL;DR: This paper presents a novel method for creating realistic, controllable motion given a corpus of motion capture data, and presents a general framework for extracting particular graph walks that meet a user's specifications.
References
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Proceedings ArticleDOI
Motion graphs
TL;DR: This paper presents a novel method for creating realistic, controllable motion given a corpus of motion capture data, and presents a general framework for extracting particular graph walks that meet a user's specifications.
Proceedings ArticleDOI
Retargetting motion to new characters
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