- publication
- EUROGRAPHICS 2007
- authors
- Ofir Weber, Olga Sorkine-Hornung, Yaron Lipman, Craig Gotsman
![Context-Aware Skeletal Shape Deformation](skinning-teaser.png)
Deformation using characteristic shapes. Left to right: Rest shape; one example with slight muscle bulge; two deformations of the rest shape based on the example. Note the significant and natural bulge of the muscle.
abstract
We describe a system for the animation of an articulated object controlled by a skeleton that preserves the fine geometric details of the object skin and conforms to the characteristic shapes of the object specified through a set of examples. The system provides the animator with an intuitive user interface and produces compelling results even when presented with a very small set of examples. In addition it is able to generalize well by extrapolating far beyond the examples.
downloads
- Paper (EUROGRAPHICS 2007, official version available at http://diglib.eg.org/)
- BibTex entry
- Video
accompanying video (with narration)
examples
Context-aware deformation of a t-shirt. Top: rest shape and 3 examples. Bottom rows: deformations of the rest shape into arbitrary poses.
![Example-based deformation of a t-shirt Example-based deformation of a t-shirt](t-shirt.png)
The effect of using different amount of anchors when deforming the original mesh using one example. Using just 2% of the triangles as anchors produces a muscle bulging effect almost indistinguishable from that produced with 100% anchors.
![Example compression Example compression](leg.png)
Extrapolation quality. Left to right: rest shape (flat mesh with waves); one example with a bend; deformation of the rest shape based on the example. Note the significant extrapolation of the bend. Only 30 anchors out of 24,000 triangles were used.
![Deformation extrapolation Deformation extrapolation](wave.png)
acknowledgments
We thank Tamir Shemesh for valuable help with the art-work and Debbie Miller for her help with the video narration. The models of the arm, leg and beast body are courtesy of Autodesk®. This research has been partially funded by European FP6 IST NoE grant 506766 (AIM@SHAPE) and the Alexander von Humboldt foundation.