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CLC number: TP391.4

On-line Access: 2011-11-04

Received: 2010-10-24

Revision Accepted: 2011-03-04

Crosschecked: 2011-09-28

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Journal of Zhejiang University SCIENCE C 2011 Vol.12 No.11 P.867-872

http://doi.org/10.1631/jzus.C1000373


Sketch-based rotation editing


Author(s):  Yue Xie, Wei-wei Xu, Yi-zhou Yu, Yan-lin Weng

Affiliation(s):  School of Computer Science and Technology, Zhejiang University, Hangzhou 310027, China, Internet Graphics Group, Microsoft Research Asia, Beijing 100190, China, Department of Computer Science, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA

Corresponding email(s):   xie.full@gmail.com, wwxu@microsoft.com, yyz@illinois.edu, weng@cad.zju.edu.cn

Key Words:  Quaternions, Keyframe interpolation, Animation editing


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Yue Xie, Wei-wei Xu, Yi-zhou Yu, Yan-lin Weng. Sketch-based rotation editing[J]. Journal of Zhejiang University Science C, 2011, 12(11): 867-872.

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Abstract: 
We present a sketch-based rotation editing system for enriching rotational motion in keyframe animations. Given a set of keyframe orientations of a rigid object, the user first edits its angular velocity trajectory by sketching curves, and then the system computes the altered rotational motion by solving a variational curve fitting problem. The solved rotational motion not only satisfies the orientation constraints at the keyframes, but also fits well the user-specified angular velocity trajectory. Our system is simple and easy to use. We demonstrate its usefulness by adding interesting and realistic rotational details to several keyframe animations.

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Reference

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