Outside-in anatomy based character rigging

Michael Pratscher, Patrick Coleman, Joe Laszlo, Karan Singh
2005 Proceedings of the 2005 ACM SIGGRAPH/Eurographics symposium on Computer animation - SCA '05  
For believable character animation, skin deformation should communicate important deformation effects due to underlying muscle movement. Anatomical models that capture these effects are typically constructed from the inside out. Internal tissue is modeled by hand and a surface skin is attached to, or generated from, the internal structure. This paper presents an outside-in approach to anatomical modeling, in which we generate musculature from a predefined structure, which we conform to an
more » ... -sculpted skin surface. Motivated by interactive applications, we attach the musculature to an existing control skeleton and apply a novel geometric deformation model to deform the skin surface to capture important muscle motion effects. Musculoskeletal structure can be stored as a template and applied to new character models. We illustrate the methodology, as integrated into a commercial character animation system, with examples driven by both keyframe animation and recorded motion data.
doi:10.1145/1073368.1073415 fatcat:yvuynfoitzgxvhadbujd7hq3uu