Design and evaluation of reduced marker layouts for hand motion capture
| Autor: | Thomas Waltemate, Mario Botsch, Tobias Röhlig, Helge Ritter, Matthias Schröder, Jonathan Maycock |
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| Rok vydání: | 2017 |
| Předmět: |
Inverse kinematics
business.industry Computer science ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION Point cloud Particle swarm optimization 020207 software engineering 02 engineering and technology Kinematics Computer Graphics and Computer-Aided Design Motion capture 0202 electrical engineering electronic engineering information engineering 020201 artificial intelligence & image processing Computer vision Artificial intelligence business Geometric modeling Software Computer animation Subspace topology ComputingMethodologies_COMPUTERGRAPHICS |
| Zdroj: | Computer Animation and Virtual Worlds. 29:e1751 |
| ISSN: | 1546-427X 1546-4261 |
| DOI: | 10.1002/cav.1751 |
| Popis: | We present a method for automatically generating reduced marker layouts for marker-based optical motion capture of human hands. The employed motion reconstruction method is based on subspace-constrained inverse kinematics, which allows for the recovery of realistic hand movements even from sparse input data. We additionally present a user-specific hand model calibration procedure that fits an articulated hand model to point cloud data of the user's hand. Our marker layout optimization is sensitive to the kinematic structure and the subspace representations of hand articulations utilized in the reconstruction method, in order to generate sparse marker configurations that are optimal for solving the constrained inverse kinematics problem. We propose specific quality criteria for reduced marker sets that combine numerical stability with geometric feasibility of the resulting layout. These criteria are combined in an objective function that is minimized using a specialized surface-constrained particle swarm optimization scheme, which generates marker layouts bound to the surface of an animated hand model. Our method provides a principled way for determining reduced marker layouts based on subspace representations of hand articulations. We demonstrate the effectiveness of our motion reconstruction and model calibration methods in a thorough evaluation. |
| Databáze: | OpenAIRE |
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