3D motion recovery via affine epipolar geometry
International Journal of Computer Vision
Coding, Analysis, Interpretation, and Recognition of Facial Expressions
IEEE Transactions on Pattern Analysis and Machine Intelligence
Analysis and Synthesis of Facial Image Sequences Using Physical and Anatomical Models
IEEE Transactions on Pattern Analysis and Machine Intelligence
Converting Facial Expressions Using Recognition-Based Analysis of Image Sequences
ACCV '98 Proceedings of the Third Asian Conference on Computer Vision-Volume II
Deformable Model-Based Shape and Motion Analysis from Images Using Motion Residual Error
ICCV '98 Proceedings of the Sixth International Conference on Computer Vision
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A method for extracting facial motion parameters is proposed. The method consists of three steps. First, the feature points of the face, selected automatically in the first frame, are tracked in successive frames. Then, the feature points are connected with Delaunay triangulation so that the motion of each point relative to the surrounding points can be computed. Finally, muscle motions are estimated based on motions of the feature points placed near each muscle. The experiments showed that the proposed method can extract facial motion parameters accurately. In addition, the facial motion parameters are used to render a facial animation sequence.