Example-Based Expressive Animation of 2D Rigid Bodies
Abstract
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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circle (1).jpg (7.66 Ko)
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analogy.jpg (26.51 Ko)
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car.jpg (68.06 Ko)
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car.png (334.77 Ko)
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circle (1).png (61.12 Ko)
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circle.jpg (42.09 Ko)
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circle.png (241.84 Ko)
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circle2.png (125.77 Ko)
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mostyl-interaction.mp4 (12.35 Mo)
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mostyl-results.mp4 (35.53 Mo)
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