The blendshape is an effective tool in computer facial animation, enabling
represention of muscle actions. Limitations exist, however, in the level of realism
attainable under conventional use of blendshapes as non-intersecting deformations.
Using the principle of superposition, it is possible to create a facial model with
overlapping blendshapes and achieve more realistic performance. When blendshapes
overlap, the region of intersection is in superposition and usually exhibits undesired
surface interference. In such cases we use a corrective blendshape to remove the
interference automatically. The result is an animatable facial model implemented in
Maya which represents the effects of muscle action superposition. Performance created
with our model of a known human subject is compared to 3D scan reference data and
video reference data of that person. Test animation is compared to video reference
footage. The test animation seems to mimic the effects of actual muscle action
superposition accurately.
| Identifer | oai:union.ndltd.org:tamu.edu/oai:repository.tamu.edu:1969.1/5007 |
| Date | 25 April 2007 |
| Creators | Smith, Andrew Patrick |
| Contributors | Parke, Frederic I. |
| Publisher | Texas A&M University |
| Source Sets | Texas A and M University |
| Language | en_US |
| Detected Language | English |
| Type | Book, Thesis, Electronic Thesis, text |
| Format | 5758799 bytes, 18669296 bytes, electronic, application/pdf, video/quicktime, born digital |
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