Vibration-minimizing motion retargeting for robotic characters
- 12 July 2019
- journal article
- research article
- Published by Association for Computing Machinery (ACM) in ACM Transactions on Graphics
- Vol. 38 (4), 1-14
- https://doi.org/10.1145/3306346.3323034
Abstract
Creating animations for robotic characters is very challenging due to the constraints imposed by their physical nature. In particular, the combination of fast motions and unavoidable structural deformations leads to mechanical oscillations that negatively affect their performances. Our goal is to automatically transfer motions created using traditional animation software to robotic characters while avoiding such artifacts. To this end, we develop an optimization-based, dynamics-aware motion retargeting system that adjusts an input motion such that visually salient low-frequency, large amplitude vibrations are suppressed. The technical core of our animation system consists of a differentiable dynamics simulator that provides constraint-based two-way coupling between rigid and flexible components. We demonstrate the efficacy of our method through experiments performed on a total of five robotic characters including a child-sized animatronic figure that features highly dynamic drumming and boxing motions.Keywords
This publication has 49 references indexed in Scilit:
- Real-time large-deformation substructuringACM Transactions on Graphics, 2011
- Articulated swimming creaturesACM Transactions on Graphics, 2011
- Deformable object animation using reduced optimal controlACM Transactions on Graphics, 2009
- Optimizing cubature for efficient integration of subspace deformationsACM Transactions on Graphics, 2008
- Meshless deformations based on shape matchingACM Transactions on Graphics, 2005
- Real-Time subspace integration for St. Venant-Kirchhoff deformable modelsACM Transactions on Graphics, 2005
- Fluid control using the adjoint methodACM Transactions on Graphics, 2004
- Motion sketching for control of rigid-body simulationsACM Transactions on Graphics, 2003
- Keyframe control of smoke simulationsACM Transactions on Graphics, 2003
- DyRTACM Transactions on Graphics, 2002