Research on Keyframe Animation Generation Method of Elastic Body Based on Inverse Finite Element Optimization Analysis
Science Discovery
Volume 5, Issue 2, April 2017, Pages: 108-117
Received: Apr. 20, 2017; Published: Apr. 20, 2017
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Authors
Hao Aimin, School of Computing Science (State Key Laboratory of Virtual Reality Technology and System), Beihang University, Beijing, China
Lan Yu, School of Computing Science (State Key Laboratory of Virtual Reality Technology and System), Beihang University, Beijing, China
Li Shuai, School of Computing Science (State Key Laboratory of Virtual Reality Technology and System), Beihang University, Beijing, China
Yang Chen, School of Computing Science (State Key Laboratory of Virtual Reality Technology and System), Beihang University, Beijing, China
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Abstract
This paper proposes a keyframe animation method of elasitc body based on inverse Finite Element Method (FEM) analysis, which constructs a multi-objective optimization process and makes a space-time optimization analysis on the keyframes in deformation space to reconstruct a user-specified deformation space of target model. By introducing signed distance field, we translate user-specified keyframe shapes into implicit surfaces, which makes our method suitable for various data format. We define an objective function measuring the distance from displacement field to implicit surface, and meanwhile introduce inverse FEM into iterative optimization process to obtain optimal control force field and model material parameter. And all experimental results show the validity of our method in accuracy and efficiency.
Keywords
Keyframe Interpolation, Inverse FEM Optimization Analysis, Deformation Space Reconstruction
To cite this article
Hao Aimin, Lan Yu, Li Shuai, Yang Chen, Research on Keyframe Animation Generation Method of Elastic Body Based on Inverse Finite Element Optimization Analysis, Science Discovery. Vol. 5, No. 2, 2017, pp. 108-117. doi: 10.11648/j.sd.20170502.15
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