Vision-based Interactive 3D Character Animation System
Date Issued
2006
Date
2006
Author(s)
Huang, Chun-chi
DOI
en-US
Abstract
This thesis proposes a performance animation system controlled by upper body motion under a restricted workspace environment. The upper body motion are obtained from a markerless vision-based arm tracking system. Since 3D pose information derived from vision is often coarse and inexact, we apply a filter to reduce noise. After noise reduction, the motion signal can be used to directly control the animation of the upper body of the avatar, or be recognized as motion command to assign motion to the avatar.
The motion control of our system is divided into two parts, the upper body and the lower body. The upper body motions of avatar can be controlled by control signal from filtered vision input, or they can be motion capture data selected by command signal from motion recognition, or they can be the mixture of two. The motions of lower body are motion capture data automatically selected by motion recognition of filtered vision input. The combined motion of the upper and the lower body may not be physically plausible. To solve this problem, we propose a two level motion integration framework. In each level, we use Kalman filters to smooth the combined motion and then revise it by imposing constraints. The combined motions are processed by the framework to ensure that they are not only smooth but also physically plausible.
Subjects
角色動畫
Performance animation
Type
thesis
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