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  • Rig retargeting for 3D animation

Proceedings: GI 2009

Rig retargeting for 3D animation

Martin Poirier, Eric Paquette

Proceedings of Graphics Interface 2009: Kelowna, British Columbia, Canada, 25 - 27 May 2009, 103-110

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    @inproceedings{Poirier:2009:,
    author = {Poirier, Martin and Paquette, Eric},
    title = {Rig retargeting for 3D animation},
    booktitle = {Proceedings of Graphics Interface 2009},
    series = {GI 2009},
    year = {2009},
    issn = {0713-5424},
    isbn = {978-1-56881-470-4},
    location = {Kelowna, British Columbia, Canada},
    pages = {103--110},
    numpages = {8},
    publisher = {Canadian Human-Computer Communications Society},
    address = {Toronto, Ontario, Canada},
    }

Abstract

This paper presents a new approach to facilitate reuse and remixing in character animation. It demonstrates a method for automatically adapting existing skeletons to different characters. While the method can be applied to simple skeletons, it also proposes a new approach that is applicable to high quality animation as it is able to deal with complex skeletons that include control bones (those that drive deforming bones). Given a character mesh and a skeleton, the method adapts the skeleton to the character by matching topology graphs between the two. It proposes specific multiresolution and symmetry approaches as well as a simple yet effective shape descriptor. Together, these provide a robust retargeting that can also be tuned between the original skeleton shape and the mesh shape with intuitive weights. Furthermore, the method can be used for partial retargeting to directly attach skeleton parts to specific limbs. Finally, it is efficient as our prototype implementation generally takes less than 30 seconds to adapt a skeleton to a character.

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