NDLI: Layered construction for deformable animated characters

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Layered construction for deformable animated characters

Content Provider	ACM Digital Library
Author	Chadwick, J. E. Haumann, D. R. Parent, R. E.
Abstract	A methodology is proposed for creating and animating computer generated characters which combines recent research advances in robotics, physically based modeling and geometric modeling. The control points of geometric modeling deformations are constrained by an underlying articulated robotics skeleton. These deformations are tailored by the animator and act as a muscle layer to provide automatic squash and stretch behavior of the surface geometry. A hierarchy of composite deformations provides the animator with a multi-layered approach to defining both local and global transition of the character's shape. The muscle deformations determine the resulting geometric surface of the character. This approach provides independent representation of articulation from surface geometry, supports higher level motion control based on various computational models, as well as a consistent, uniform character representation which can be tuned and tweaked by the animator to meet very precise expressive qualities. A prototype system (Critter) currently under development demonstrates research results towards layered construction of deformable animated characters.
Starting Page	243
Ending Page	252
Page Count	10
File Format	PDF
ISBN	0897913124
DOI	10.1145/74333.74358
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	1989-07-01
Publisher Place	New York
Access Restriction	Subscribed
Content Type	Text
Resource Type	Article

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