Perceptually validated global/local deformations

Modal analysis techniques are often used to animate deformable objects in real time. In order to achieve performance improvements, the degrees of freedom of the problem may be reduced by using the main global deformations alone. However, this can lead to a reduction in quality and realism due to the lack of local behaviors. To solve this problem, we present a new method to add local deformations to modal analysis simulations. We perceptually evaluate our method with a set of experiments, thereby deriving guidelines for when and how local deformations can best be used. Copyright © 2010 John Wiley & Sons, Ltd.