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CageIK: Dual-Laplacian Cage-Based Inverse Kinematics

Yann Savoye 1, 2 Jean-Sébastien Franco 1, 2
2 IPARLA - Visualization and manipulation of complex data on wireless mobile devices
CNRS - Centre National de la Recherche Scientifique : UMR5800, École Nationale Supérieure d'Électronique, Informatique et Radiocommunications de Bordeaux (ENSEIRB), Inria Bordeaux - Sud-Ouest, Université Sciences et Technologies - Bordeaux 1
Abstract : Cage-based deformation techniques are widely used to con-trol the deformation of an enclosed fine-detail mesh. Achieving deforma-tion based on vertex constraints has been extensively studied for the case of pure meshes, but few works specifically examine how such vertex con-straints can be used to efficiently deform the template and estimate the corresponding cage pose. In this paper, we show that this can be achieved very efficiently with two contributions: (1) we provide a linear estima-tion framework for cage vertex coordinates; (2) the regularization of the deformation is expressed on the cage vertices rather than the enclosed mesh, yielding a computationally efficient solution which fully benefits from cage-based parameterizations. We demonstrate the practical use of this scheme for two applications: animation edition from sparse screen-space user-specified constraints, and automatic cage extraction from a sequence of meshes, for animation re-edition.
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Yann Savoye, Jean-Sébastien Franco. CageIK: Dual-Laplacian Cage-Based Inverse Kinematics. AMDO 2010 : Articulated Motion and Deformable Objects, Jul 2010, Majorque, Spain. pp.280 - 289, ⟨10.1007/978-3-642-14061-7_27⟩. ⟨inria-00527809⟩

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