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    • 35-Issue 2
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    Animation Setup Transfer for 3D Characters

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    2016-01-26.mp4 (142.6Mb)
    Date
    2016
    Author
    Avril, Quentin
    Ghafourzadeh, Donya
    Ramachandran, Srinivasan
    Fallahdoust, Sahel
    Ribet, Sarah
    Dionne, Olivier
    Lasa, Martin de
    Paquette, Eric ORCID
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    Abstract
    We present a general method for transferring skeletons and skinning weights between characters with distinct mesh topologies. Our pipeline takes as inputs a source character rig (consisting of a mesh, a transformation hierarchy of joints, and skinning weights) and a target character mesh. From these inputs, we compute joint locations and orientations that embed the source skeleton in the target mesh, as well as skinning weights to bind the target geometry to the new skeleton. Our method consists of two key steps. We first compute the geometric correspondence between source and target meshes using a semi-automatic method relying on a set of markers. The resulting geometric correspondence is then used to formulate attribute transfer as an energy minimization and filtering problem. We demonstrate our approach on a variety of source and target bipedal characters, varying in mesh topology and morphology. Several examples demonstrate that the target characters behave well when animated with either forward or inverse kinematics. Via these examples, we show that our method preserves subtle artistic variations; spatial relationships between geometry and joints, as well as skinning weight details, are accurately maintained. Our proposed pipeline opens up many exciting possibilities to quickly animate novel characters by reusing existing production assets.
    BibTeX
    @article {10.1111:cgf.12816,
    journal = {Computer Graphics Forum},
    title = {{Animation Setup Transfer for 3D Characters}},
    author = {Avril, Quentin and Ghafourzadeh, Donya and Ramachandran, Srinivasan and Fallahdoust, Sahel and Ribet, Sarah and Dionne, Olivier and Lasa, Martin de and Paquette, Eric},
    year = {2016},
    publisher = {The Eurographics Association and John Wiley & Sons Ltd.},
    ISSN = {1467-8659},
    DOI = {10.1111/cgf.12816}
    }
    URI
    http://dx.doi.org/10.1111/cgf.12816
    Collections
    • 35-Issue 2
    • EG 2016 - Full Papers - CGF 35-Issue 2

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    System hosted at  Graz University of Technology.
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