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Abstract
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Article Information:
A 3D Facial Expression Tracking Method Using Piecewise Deformations
Jing Chi, Xiaoming Wu and Shanshan Gao
Corresponding Author: Jing Chi
Submitted: August 09, 2012
Accepted: September 03, 2012
Published: February 11, 2013 |
Abstract:
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We present a new fast method for 3D facial expression tracking based on piecewise non-rigid deformations. Our method takes as input a video-rate sequence of face meshes that record the shape and time-varying expressions of a human face, and deforms a source mesh to match each input mesh to output a new mesh sequence with the same connectivity that reflects the facial shape and expressional variations. In mesh matching, we automatically segment the source mesh and estimate a non-rigid transformation for each segment to approximate the input mesh closely. Piecewise non-rigid transformation significantly reduces computational complexity and improves tracking speed because it greatly decreases the unknowns to be estimated. Our method can also achieve desired tracking accuracy because segmentation can be adjusted automatically and flexibly to approximate arbitrary deformations on the input mesh. Experiments demonstrate the efficiency of our method.
Key words: Mesh matching, non-rigid transformation, segmentation, time-varying expressions , , ,
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Cite this Reference:
Jing Chi, Xiaoming Wu and Shanshan Gao, . A 3D Facial Expression Tracking Method Using Piecewise Deformations. Research Journal of Applied Sciences, Engineering and Technology, (05): 1804-1810.
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ISSN (Online): 2040-7467
ISSN (Print): 2040-7459 |
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