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Rotation distortion of local coordinate frame in curve skeleton-driven body deformation
Wang Cheng, Dai Shuling*
School of Automation Science and Electrical Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

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Abstract�� An analysis of defects resulting by using three basic orthogonal axes method to construct a local coordinate frame in body deformation was presented. A new approach which was a position-quaternion solution was proposed to improve the defects and rotation distortions of local coordinate frame in curve skeleton-driven body deformation. It took the technique of quaternion spherical linear interpolation and B-spline quaternion interpolation to construct a local coordinate frame, adopt a position-quaternion-scale method to replace traditional transform matrix. It achieved vivid and realistic human skin and muscle deformations by binding body surface vertices to local coordinate frames. The results show that the method effectively eliminates the local coordinate system rotation distortion, fewer restrictions to apply and easy to implement.
Keywords�� body deformation   curve skeleton-driven   local coordinate frame   virtual reality     
Received 2010-09-16;
Fund:

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Wang Cheng, Dai Shuling.Rotation distortion of local coordinate frame in curve skeleton-driven body deformation[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2012,V38(1): 48-52
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