max planck institut informatik
Rigging an arbitrary 3D character by creating an animation skeleton is a time-consuming process even for experienced animators. In this paper, we present an algorithm that automatically creates animation rigs for multicomponent 3D models, as they are typically found in online shape databases. Our algorithm takes as input a multi-component model and an input animation skeleton with associated motion data. It then creates a target skeleton for the input model, calculates the rigid skinning weights, and a mapping between the joints of the target skeleton and the input animation skeleton. The automatic approach does not need additional semantic information, such as component labels or user-provided correspondences, and succeeds on a wide range of models where the number of components is significantly different. It implicitly handles large scale and proportional differences between input and target skeletons and can deal with certain morphological differences, e.g., if input and target have different numbers of limbs. The output of our algorithm can be directly used in a retargeting system to create a plausible animated character.
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@article{Bharaj:2012:AutoRig,
author = {Gaurav Bharaj and
Thorsten Thorm\"{a}hlen and
Hans-Peter Seidel and
Christian Theobalt
},
title = {Automatically Rigging Multi-component Characters},
journal = {Comp. Graph. Forum (Proc. Eurographics 2012)},
year = {2011},
volume = {30},
number = {2}
}
This work has been partially funded by the Max Planck Center for Visual Computing and Communication.
We thank