Data-Driven Motion Exaggeration

As a significant principle of the character animation,exaggeration originates from the reality and goes beyond it.According to the principle,this paper construed the motion exaggeration as a kind of "scaling" of velocities from the perspective of kinematics and presented a velocity scaling based approach to create exaggerated motion from the real motion capture data.In the process,scaling factor curves are calculated from few intuitive parameters set by users to scale velocities that extracted from the skeletons' joints.And then,the exaggerated motion can be reconstructed by mapping the new velocities back to the original motion data expression.Three cartoon effects and complex acrobatic motions can be generated by the unified method.In order to make the exaggeration more convincing,a constraint-based solver was employed to reinforce the visual plausibility in the resultant motions.The experimental results show that our method can generate motion exaggeration for character animation and can be used in the animation creation.