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Motion learning-based framework for unarticulated shape animation
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Original Article
Motion learning-based framework for unarticulated shape animation
Chao Jin1 , Thomas Fevens1 , Shuo Li2 and Sudhir Mudur1 
| (1) |
Department of Computer Science and Software Engineering, Concordia University, 1455 De Maisonneuve Blvd. West, H3G 1M8 Montreal, QC, Canada |
| (2) |
GE Healthcare, 700 Collip Circle, London, ON, N6G 4X8, Canada |
Published online: 30 June 2007
Abstract This paper presents a framework for generating animation sequences while maintaining desirable physical properties in a deformable
shape. The framework consists of three important processes. Firstly, considering the given key pose configurations in the
form of unarticulated meshes in high dimensional space, we cast our motion in low dimensional space using the unsupervised
learning method of locally linear embedding (LLE). Corresponding to each point in LLE space, we can reconstruct the in-between
pose using generalized radial basis functions. Next we create a map in the LLE space of the values for the different physical
properties of the mesh, for example area, volume, etc. Finally, a probability distribution function in LLE space helps us
rapidly choose the required number of in-between poses with desired physical properties. A significant advantage of this framework
is that it relieves the animator the tedium of having to carefully provide key poses to suit the interpolant.
Keywords Computer animation - Keyframe - Mesh deformation - Motion learning
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