Example-Based Expressive Animation of 2D Rigid Bodies

Marek Dvorožňák
CTU in Prague, FEE
Pierre Bénard
University of Bordeaux
Pascal Barla
Oliver Wang
Adobe Research
Daniel Sýkora
CTU in Prague, FEE


We present a novel approach to facilitate the creation of stylized 2D rigid body animations. Our approach can handle multiple rigid objects following complex physically-simulated trajectories with collisions, while retaining a unique artistic style directly specified by the user. Starting with an existing target animation (e.g., produced by a physical simulation engine) an artist interactively draws over a sparse set of frames, and the desired appearance and motion stylization is automatically propagated to the rest of the sequence. The stylization process may also be performed in an off-line batch process from a small set of drawn sequences. To achieve these goals, we combine parametric deformation synthesis that generalizes and reuses hand-drawn exemplars, with non-parametric techniques that enhance the hand-drawn appearance of the synthesized sequence. We demonstrate the potential of our method on various complex rigid body animations which are created with an expressive hand-drawn look using notably less manual interventions as compared to traditional techniques.

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ACM Transactions on Graphics 36(4):127, 2017

(SIGGRAPH 2017, Los Angeles, USA, July 2017)

Supplementary Video

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