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Motion is the center of attention in many applications of computer graphics. Skeletal motion for articulated characters can be processed and altered in a variety of ways to increase the versatility of each motion clip. However, analogous techniques have not yet been developed for free-form deforming surfaces like cloth and faces. Given the time-consuming nature of producing each free-form motion clip, the ability to alter and reuse free-form motion would be very desirable. We present a novel method for processing free-form motion that opens up a broad range of possible motion alterations including motion blending, keyframe insertion, and temporal signal processing. Our method is based on a simple yet powerful differential surface representation that is invariant under rotation and translation and which is well suited for surface editing in both space and time.
Kircher et al. (2008) studied this question.