Discriminant feature extraction based on center distance
ICIP'09 Proceedings of the 16th IEEE international conference on Image processing
Facial expression recognition on multiple manifolds
Pattern Recognition
Automatic Facial Expression Recognition by Facial Parts Location with Boosted-LBP
International Journal of Computer Vision and Image Processing
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Automatic facial expression analysis is a vital component of intelligent Human-Computer Interaction (HCI). In this paper, we present a extensive empirical study on linear subspace methods for facial expression analysis. Locality Preserving Projections (LPP) and Orthogonal Neighborhood Preserving Projections (ONPP) are first time applied to facial expression analysis. We systematically examine a number of linear subspace methods, and show that, in our comparative studies, the Supervised LPP (SLPP) is superior in supervised methods, while ONPP performs best in unsupervised learning.