Fabricating articulated characters from skinned meshes

M. Bac̈Her, B. Bickel, D. James, H. Pfister, ACM Transactions on Graphics 31 (2012).

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Journal Article | Published
Author
Bac̈her, Moritz; Bickel, BerndIST Austria ; James, Doug L; Pfister, Hanspeter
Abstract
Articulated deformable characters are widespread in computer animation. Unfortunately, we lack methods for their automatic fabrication using modern additive manufacturing (AM) technologies. We propose a method that takes a skinned mesh as input, then estimates a fabricatable single-material model that approximates the 3D kinematics of the corresponding virtual articulated character in a piecewise linear manner. We first extract a set of potential joint locations. From this set, together with optional, user-specified range constraints, we then estimate mechanical friction joints that satisfy inter-joint non-penetration and other fabrication constraints. To avoid brittle joint designs, we place joint centers on an approximate medial axis representation of the input geometry, and maximize each joint's minimal cross-sectional area. We provide several demonstrations, manufactured as single, assembled pieces using 3D printers.
Publishing Year
Date Published
2012-01-01
Journal Title
ACM Transactions on Graphics
Acknowledgement
This work was partially supported by NSF grant IIS-1116619. Doug James acknowledges support from Pixar and a fellowship from the John Simon Guggenheim Memorial Foundation
Volume
31
Issue
4
IST-REx-ID

Cite this

Bac̈Her M, Bickel B, James D, Pfister H. Fabricating articulated characters from skinned meshes. ACM Transactions on Graphics. 2012;31(4). doi:10.1145/2185520.2185543
Bac̈Her, M., Bickel, B., James, D., & Pfister, H. (2012). Fabricating articulated characters from skinned meshes. ACM Transactions on Graphics, 31(4). https://doi.org/10.1145/2185520.2185543
Bac̈Her, Moritz, Bernd Bickel, Doug James, and Hanspeter Pfister. “Fabricating Articulated Characters from Skinned Meshes.” ACM Transactions on Graphics 31, no. 4 (2012). https://doi.org/10.1145/2185520.2185543.
M. Bac̈Her, B. Bickel, D. James, and H. Pfister, “Fabricating articulated characters from skinned meshes,” ACM Transactions on Graphics, vol. 31, no. 4, 2012.
Bac̈Her M, Bickel B, James D, Pfister H. 2012. Fabricating articulated characters from skinned meshes. ACM Transactions on Graphics. 31(4).
Bac̈Her, Moritz, et al. “Fabricating Articulated Characters from Skinned Meshes.” ACM Transactions on Graphics, vol. 31, no. 4, ACM, 2012, doi:10.1145/2185520.2185543.

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